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March 26, 2015

SWISS SIDE HADRON PROJECT UPDATE 25

 
SWISS SIDE ANNOUNCES THE 485 & 800+ AERO WHEEL PRE-ORDER AT A LIMITED SPECIAL LOW PRICE.
THE STORE IS NOW OPEN!
 

CLICK HERE TO ORDER NOW
Quantities in this first delivery are limited and are expected to sell out very quickly.

 
Swiss Side just completed delivering the reports for another completely transparent development process, this time, for their new Hadron 485 and 800+ aero wheels including CFD, wind tunnel and final specs amongst the rest. These reports, once again, put the Hadron atop the leaderboard for aerodynamic wheels on the market for a much lower price. Swiss Side is proud to announce the pre-order for these new wheels and to declare that the store is now open for business. They are also offering a limited special low price now through May 12th only. Anyone who has considered purchasing the Hadron 625 or who are interested in the new 485 and/or 800+ are highly encouraged to order now as prices will never be lower.
 

 

 

 

 
All three Hadron models are also available as single wheel purchases so that customers can mix and match and create an ultimate aero setup to suit their personal needs.
 

 
“The entire Swiss Side team are elated to have finally reached this important milestone of now offering the Hadron 485, 625 and 800+,” says Swiss Side Technical Director, Jean-Paul Ballard. “We could not be more happy to be offering this line up just in time for the 2015 cycling season.”
 

 

 
 

REVIEW THE ENTIRE HADRON PROJECT DEVELOPMENT PROCESS HERE
http://www.swissside.com/hadron

 

ABOUT SWISS SIDE
With 50 years of Formula 1 experience, Swiss Side strives to revolutionize cycling aerodynamics to maximize the performance of affordable aero wheels. Top quality, unbeatable aero wheels delivering maximum “real world performance” at an affordable price.
For more information: www.swissside.com, www.facebook.com/Swissside and @swissside.
 
 
 
 

March 18, 2015

SWISS SIDE HADRON PROJECT UPDATE 24

 
SWISS SIDE RELEASES THE FINAL SPECS FOR THE HADRON 485 & 800+ AERO WHEELS
 
Swiss Side is proud to announce that they have entered the final stage of the HADRON 485 and 800+ Aero Wheel development, in releasing the final specifications.
 

 
“Together with the Hadron 625 wheel set, the new Hadron 485 and 800+ models are absolute industry leading performance aero wheels and we offer them at an unbeatable price,” says Swiss Side Technical Director, Jean-Paul Ballard. “This is the essence of what we want to achieve at Swiss Side –absolute top level quality and performance at an affordable price.”
 
Swiss Side will be offering all Hadron models for single wheel purchases. Customers are free to mix and match the 625, 485 and 800+ front and rear wheels to create the optimum aero wheel package for their needs.
 
 
HADRON AERO WHEEL SPECIFICATIONS
 
HADRON 485 Key Specs:


 
485 FRONT WHEEL
 

RIM:
Hybrid alu/carbon rim construction
48.5mm deep aerodynamic profile front and rear
24mm maximum profile width
23mm braking surface width

 

WEIGHT:
Front: 732g
Rear: 907g
Set: 1639g

 

PRICE:
€979* for EU customers. Incl. VAT. Free shipping on all EU orders.
Front Wheels Only: €450*
Rear Wheel Only: €529*
 
*€815.83 + for customers outside EU. Excl. VAT. Shipping additional.
Front Wheels Only: €375*
Rear Wheel Only: €440.83*

 
*2015 “Spring Pricing” valid through 12th May 2015. Store opens 26th March.
*Ceramic bearing upgrades available.

 
 
HADRON 800+ Key Specs:


 
800+ FRONT WHEEL
 

RIM:
Hybrid Alu/Carbon rim construction
80mm (front) 85mm (rear) deep aerodynamic profile
28mm maximum profile width
23mm braking surface width

 

WEIGHT:
Front: 816g
Rear: 999g
Set: 1815g

 

PRICE:
€1099* for EU customers. Incl. VAT. Free shipping on all EU orders.
Front Wheels Only: €506*
Rear Wheel Only: €593*
 
€915.83* + for customers outside EU. Excl. VAT. Shipping additional.
Front Wheels Only: €421.67*
Rear Wheel Only: €494.17*

 
*2015 “Spring Pricing” valid through 12th May 2015. Store opens 26th March.
*Ceramic bearing upgrades available.

 
Refer to the complete specifications overview of the Hadron Aero Wheel line below.
 

 
Stay tuned, further details on the Hadron 485 and 800+ will be published on March 26th with the pre-order launch.
 
Following the independently acclaimed and successful Hadron 625 Aero Wheel, Swiss Side has, once again, released fully-transparent wind tunnel testing reports detailing the exceptional performance of the new Hadron 485 and 800+ aero wheel models. If you missed the wind tunnel test methods and stunning results release, click here: http://www.swissside.com/swiss-side-hadron-project-update-23/
 
Review the entire Hadron Project development process here: http://www.swissside.com/hadron.
 
ABOUT SWISS SIDE: With 50 years of Formula 1 experience, Swiss Side strives to revolutionize cycling aerodynamics to maximize the performance of affordable aero wheels. Top quality, unbeatable aero wheels delivering maximum “real world performance” at an affordable price. For more information: www.swissside.com, www.facebook.com/Swissside and @swissside.

 
If you haven’t followed the rest of the Swiss Side Hadron Project development process, catch up at www.swissside.com/hadron or click on the instalment you are interested in below:

UPDATE 1- SWISS SIDE HADRON INTRODUCTION
UPDATE 2- SWISS SIDE HADRON INITIAL SPECIFICATION
UPDATE 3- HAVE YOUR SAY IN THE HADRON SURVEY
UPDATE 4- CFD (COMPUATIONAL FLUID DYNAMICS) OPTIMISATION
UPDATE 5- HADRON SURVEY INITIAL RESULTS
UPDATE 6- STRUCTURAL DESIGN & ANALYSIS
UPDATE 7- CFD OPTIMISATION RESULTS
UPDATE 8- HADRON GRAPHIC DESIGN SURVEY
UPDATE 9- WIND TUNNEL TESTING METHODS AND RESULTS
UPDATE 10- HADRON GRAPHIC DESIGN DECISION
UPDATE 11- FINAL HADRON SPECS, PRICING, & REGISTER YOUR INTEREST
UPDATE 12- HADRON PRE-ORDER NOW LIVE! -ORDER HERE
UPDATE 13- BACK TO THE WIND TUNNEL
UPDATE 14- ROAD TESTING FEEDBACK
UPDATE 15- 2014 EUROBIKE AERO WHEEL BATTLE
UPDATE 16- HADRON WINS IRONMAN WISCONSIN
UPDATE 17- TOUR MAGAZINE INDEPENDENT TESTING ARTICLE
UPDATE 18- SWISS SIDE PRO-IRONMAN ATHLETE BRITTA MARTIN WINS ANOTHER IRONMAN ON THE HADRON 625
UPDATE 19- TOUR MAG FEATURES THE SWISS SIDE HADRON 625 AS A REFERENCE AERO-WHEEL SET.
UPDATE 20- SWISS SIDE IN DEVELOPMENT OF TWO NEW HADRON AERO WHEELS FOR 2015.
UPDATE 21- SWISS SIDE SIGNS ANDREAS & MICHAEL RAELERT TO A TWO YEAR EXCLUSIVE WHEEL SPONSORSHIP.
UPDATE 22- CFD DEVELOPMENT FOR THE HADRON AERO WHEEL LINE EXPANSION.
UPDATE 23- WIND TUNNEL DEVELOPMENT OF THE NEW HADRON 845 & 800+ AERO WHEEL MODELS.

Don’t forget to sign up to the Swiss Side update newsletter for further updates on the Hadron project! You can do so on the Hadron page: www.swissside.com/hadron
 
 

 
 
 

March 11, 2015

SWISS SIDE HADRON PROJECT UPDATE 23

 
Wind tunnel development of the new Hadron 485 & 800+ aero wheel models.
 
The Swiss Side Hadron 485 and 800+ wheel sets, establish two new aerodynamic benchmarks for the cycling wheel industry.
 
Following the extensive CFD (Computational Fluid Dynamics) development of the new low profile Hadron 485 (48.5mm profile) and the deeper section Hadron 800+ (80mm front, 85mm rear profile), reported in the recent Hadron Update 22, the development process turned once again to the wind tunnel. As always, one of the key targets of these wind tunnel sessions was to confirm the drag and side force performance of the new 485 & 800+ wheel models, relative to the highly successful Hadron 625. However in order to better test and evaluate the ‘real world performance’ of road bike wheels, an all important new measurement system was implemented for Steering Torque. Swiss Side invests a great deal of development time in reducing and optimising the steering response characteristics of the wheels. The reason is simple:
 
The front wheel response & stability, plays a major roll in keeping the rider in the aero position. Thereby the rider drag is minimised, which accounts for 75-80% of the total system drag.
 
This is what Swiss Side means by ‘real world performance’. – The end goal is not the lowest drag wheel. The goal is the lowest drag complete bike and rider unit, for which the wheels can have a significant influence if engineered correctly.
 
Independent media reviews, as well as subjective feedback from pro-riders and customers alike, all confirmed that the (CFD developed) response characteristics of the Hadron 625 had successfully resulted in an extremely stable and low sensitivity wheel. With the newly implemented steering torque measurement capability, it was therefore possible to scientifically and objectively quantify the front wheel response as part of the Hadron 485 & 800+ wind tunnel development program.
 
Testing was also extended to a wider range of the latest aero bike frames. Further tyre aerodynamics evaluations, this time for tubeless tyres was also completed. Finally, some industry pioneering aerodynamic R&D projects from Swiss Side were also evaluated during these wind tunnel sessions.
 
The complete details surrounding the Swiss Side wind tunnel testing & development methods can be found in the previously published reports:
Update 9 – Wind Tunnel Testing Methods
Update 13 – Hadron 625 & Tyre Wind Tunnel Testing
Update 15 – Eurobike Wind Tunnel Battle

 
What was tested & how?
 
For the new Hadron 485 and 800+ wheel sets, the best wheel design solutions from CFD were again produced using rapid prototype (3D-printed) rim covers, applied to the Hadron structural wheel. These prototypes were then tested in the wind tunnel to confirm the performance predicted by CFD.

 The front wheels were first tested stand-alone without the bike for evaluating the pure aerodynamic performance of the wheels alone. Then to obtain final accurate numbers regarding the absolute wheel performance on the bike, as well to evaluate the rear wheel performance, complete bike testing is also required.
 
Once the final specification of prototype wheels were chosen based on the wind tunnel testing results, the tooling for the production wheels was released and the first pre-production wheels produced. These wheels were then tested again in the wind tunnel to confirm the expected performance seen on the prototypes.
 
Performance data for Drag, Side Force and Steering Torque were collected. The primary testing speed was done at the industry standard 45km/h, however additional speed scans from 25km/h to 75km/h were conducted to identify any speed sensitivities.
 
In this latest wind tunnel testing session, the Swiss Side aerodynamics team also had the opportunity to test and collect data on a variety of the latest aero bike frames, including:
– BMC Time Machine TM01 (reference frame),
– Specialized Shiv,
– Cervélo P5
– Canyon Speedmax CF.
The primary purpose of testing on different frames was to investigate any performance variation on differing frame geometries.
 
Finally, tubeless tyres are beginning to break light on the road cycling scene. Although there is much debate regarding whether these are practical, or offer a real performance benefit for road riding, the aerodynamic performance of two tubeless tyres was tested:
– Schwalbe Ironman Tubeless, 700x22c
– Specialized S-Works Turbo Road Tubeless, 700x24c
 

 
These two tyres were chosen since their sidewall profiling looked as though it could be adequate for the all important boundary layer tripping. (See in Update 13 – Hadron 625 & Tyre Wind Tunnel Testing for details).
 
 
Testing Results
 
Hadron 485 & 800+ Testing:
 
The performance of the Hadron 485 and the Hadron 800+ wheels once again matched very closely with the CFD predictions. Relative to the already independently acclaimed Hadron 625, the wind tunnel confirmed the expected steps in terms of the drag and side force performance of the new wheel models. Also very importantly, the steering torque measurement installation gave the Swiss Side aerodynamics team the ability to scientifically quantify the steering sensitivity effects.
 
The performance steps through the range of Swiss Side Hadron aero wheels can best be summarised by the ‘wheel mapping’ chart below, showing the weighted average Drag Power, plotted against the weighted average Side Force. This shows almost purely linear performance steps across the wheel range: Hadron 485 – 625 – 800+. The intermediate steps are also shown where for example, a Hadron 485 front wheel is combined with a 625 rear wheel.
 
The results here are excellent. The drag reduction steps across the range are very well distributed. Each step results in proportionally equal increased steps in side force response. Regarding the steering torque and sensitivity, see details further below.
 
Merit-Performance
*Data based on measurement on BMC Time Machine TM01 at 45km/h.
 
To recap, the weighted average performance characterises the total aerodynamic performance across the complete yaw (cross-wind) range by applying a Gaussian (bell curve) law to characterise how often each yaw angle occurs out in the real world. Complete details regarding Swiss Side’s weighting systems and how they are used in both CFD and wind tunnel testing can be found in Hadron Update 7.
 
Drag-v-Yaw
*Power and Side Force data measured on BMC Time Machine TM01 at 45km/h.
 
SideForce-v-Yaw
 
The Drag Power curves, as well as the Side Force curves above, show the detailed performance across the yaw range. In general, the deeper profiles benefit more from the cross-wind ‘sailing effects.’ As the yaw angle increases, so does the lift produced by the profile. This lift produces thrust in the riding direction and this is the primary aerodynamic mechanism that reduces the drag. However this lift also responsible for the side force increase.
 
SteerTorque-v-Yaw
 
The steering torque and sensitivities measured were excellent. As predicted by CFD, the Hadron 485 shows the expected reduction in both steering torque and a reduced gradient in the response. The deeper section Hadron 800+ front wheel as expected showed the marked increase in steering torque magnitude and the gradient of the response with yaw. This was the primary reason that the rim depth of the Hadron 800+ front wheel was limited to 80mm, whereas the rear wheel depth was designed at 85mm. The magnitude of the steering torque is the key trade-off between the deep section and shallow section wheels. Very importantly however, the steering torque response curves with yaw, remain perfectly linear for all Hadron wheels.
 
This is one of the most important features for stable aerodynamic wheel characteristics.
 
One of the ‘Big Brand’ competitor wheels tested, shown by the red dotted line, offers the perfect example of an unstable aerodynamic response. The changing, unsteady steering torque response would be felt by the rider as an unpredictable pushing and pulling on handlebars in changing wind conditions. This massively reduces the rider’s confidence and forces them out of their aero position, or even to reduce their power output to be prepared to react. Although some competitor wheels come within 1-2W of the Hadron aero wheel drag performance levels, the rider lifting even slightly out of the aero position results in a drag penalty in excess of 30W! This is where the wheels can play an important role in reducing the rider drag.
 
For this reason the wheel stability is extremely important to ‘real world performance.’
 

Hadron 800+ production wheel set
 

Hadron 485 production wheel set
 
 
Wheel evaluation on a variety of aero frames:
 
The purpose of this block of the test was not to evaluate the performance of the individual aero frames, however to check for any change in the wheel performance and response with those different frames.
 
The group of frames tested showed quite a significant spread in aerodynamic performance, with the Cervélo P5 offering the lowest drag (17% lower than the highest drag frame) and the BMC Time Machine TM01 offered lowest side force (13% less than the highest side force frame). However despite the spread in aerodynamic characteristics between the frames, the wheel performance contribution and response remained the same regardless of the frame geometry.
 

Hadron 800+ production wheel set on Cervélo P5
 

Hadron 800+ production wheel set on Specialized Shiv
 
 
Tubeless Tyre evaluation
 
The Schwalbe Ironman was the best of the tubeless tyres tested. However, it did show a strong speed effect, with deteriorating performance at lower speeds. This indicates that the boundary layer tripping / mixing offered by the tread is not quite sufficient.
 
The Specialized S-Works Turbo tyre, apart from being almost impossible to install on the rim, showed poor aerodynamic performance, similar to that shown by slick tyres. This shows that the sidewall texture is not adequate to trip the boundary layer into the turbulent state.
 
The Continental GP4000s II remains the best tyre in terms of overall aerodynamic performance, as well as offering one of the lowest rolling resistance tyres available on today’s market.
 
Tyre-Compare
 
SUMMARY & CONCLUSIONS
 
The performance of the new Hadron 485 & 800+ wheel models successfully proved to reach the absolute top levels expected.
 
Using the already independently tested and proven Hadron 625 as the reference, the performance steps of the new Hadron 485 and 800+ wheel models are summarized in the table below. The numbers given are the weighted average performance for each parameter. Note that the same weighting system is applied to the Steering Torque as for Side Force, (higher yaw angles are weighted more strongly than the lower angles).
The data listed below is the complete bike performance as measured on the BMC Time Machine TM01 frame set. The performance deltas between the wheels are therefore in context of the complete bike system.
 
NEW2-  Performance Overview
 

The Hadron 800+ wheel set offers another step again in reducing drag compared to the Hadron 625. Although the magnitude of side force and steering torque increases, the all important steering response characteristic remains stable and predictable as with Hadron 625. The Hadron 800+ is the ideal wheel set for absolute minimum drag in low to medium wind conditions.
 
The Hadron 485 wheel set offers a step in further reducing steering torque and side force compared to the Hadron 625, for a minor increase in wheel drag. The steering response characteristic is also shown to remain perfectly stable. The Hadron 485 offers the perfect performance characteristics for high wind days or for riders who desire an extremely low sensitivity from the front wheel response.
 
The performance benefits of all the Hadron wheel models wheels remains consistent regardless of the bike frame on which they are tested.
 
NEW2-  Time Savings
 
This table puts the Drag Power numbers in context by defining realistic time gains out on the road. In order to represent both professionals as well as normal amateur athletes, calculations were made for the typical power outputs and average speeds for those riders.
 
Note that these numbers are purely based on wheel drag performance. As highlighted in this report, when also considering the importance of front wheel stability and its response in the wind, these gains can in fact be significantly higher due the implications for total rider drag. Since Swiss Side wheels are designed with a strong focus on stability, this is where the Hadron wheel models can offer further significant performance gains over other brand wheels.
 
Further photo and video:
 
Click here to view a photo gallery from these latest Swiss Side wind tunnel tests.
 
Video of the Swiss Side wind tunnel test can be viewed here:
http://www.swissside.com/hadron/hadron-wind-tunnel-testing
 
 
 
NEXT UP…
 
Stay tuned for the next updates-
 
Update 24 – Final Specification & Pricing.
The final specification for all of the 2015 Swiss Side Hadron wheel models will be released together with the pricing.
Publication Date: 18th March 2015
 
Update 25 – Hadron 485 & 800+ Pre-Order Launch.
The shop will open for the Hadron 485 and 800+ which will be made exclusively available for purchase through the Swiss Side online shop.
Launch Date: 26th March 2015
 
…and more to come.
Consistent with Swiss Side’s ‘real world performance’ drive, the aerodynamics team has been working on some pioneering development projects, which will be completely new and groundbreaking for the cycling industry. These have been born through the team’s unique experience from Formula 1 motor racing. Initial tests were successfully completed during this most recent wind tunnel testing session and the projects are set to break cover during 2015… Stay tuned!
 

 
 

 
If you haven’t followed the rest of the Swiss Side Hadron Project development process, catch up at www.swissside.com/hadron or click on the instalment you are interested in below:

UPDATE 1- SWISS SIDE HADRON INTRODUCTION
UPDATE 2- SWISS SIDE HADRON INITIAL SPECIFICATION
UPDATE 3- HAVE YOUR SAY IN THE HADRON SURVEY
UPDATE 4- CFD (COMPUATIONAL FLUID DYNAMICS) OPTIMISATION
UPDATE 5- HADRON SURVEY INITIAL RESULTS
UPDATE 6- STRUCTURAL DESIGN & ANALYSIS
UPDATE 7- CFD OPTIMISATION RESULTS
UPDATE 8- HADRON GRAPHIC DESIGN SURVEY
UPDATE 9- WIND TUNNEL TESTING METHODS AND RESULTS
UPDATE 10- HADRON GRAPHIC DESIGN DECISION
UPDATE 11- FINAL HADRON SPECS, PRICING, & REGISTER YOUR INTEREST
UPDATE 12- HADRON PRE-ORDER NOW LIVE! -ORDER HERE
UPDATE 13- BACK TO THE WIND TUNNEL
UPDATE 14- ROAD TESTING FEEDBACK
UPDATE 15- 2014 EUROBIKE AERO WHEEL BATTLE
UPDATE 16- HADRON WINS IRONMAN WISCONSIN
UPDATE 17- TOUR MAGAZINE INDEPENDENT TESTING ARTICLE
UPDATE 18- SWISS SIDE PRO-IRONMAN ATHLETE BRITTA MARTIN WINS ANOTHER IRONMAN ON THE HADRON 625
UPDATE 19- TOUR MAG FEATURES THE SWISS SIDE HADRON 625 AS A REFERENCE AERO-WHEEL SET.
UPDATE 20- SWISS SIDE IN DEVELOPMENT OF TWO NEW HADRON AERO WHEELS FOR 2015.
UPDATE 21- SWISS SIDE SIGNS ANDREAS & MICHAEL RAELERT TO A TWO YEAR EXCLUSIVE WHEEL SPONSORSHIP.
UPDATE 22- CFD DEVELOPMENT FOR THE HADRON AERO WHEEL LINE EXPANSION.

Don’t forget to sign up to the Swiss Side update newsletter for further updates on the Hadron project! You can do so on the Hadron page: www.swissside.com/hadron
 
 

March 5, 2015

SWISS SIDE HADRON PROJECT UPDATE 22

 
CFD development for the Hadron Aero wheel line expansion.
 
Following the success of the Hadron 625 development, Swiss Side has taken to expand their aero wheel line. The target was to develop additional models to maximize aerodynamic performance over the complete spectrum of wind conditions and rider requirements seen in the real world.

 
Although the rider is responsible for the majority of drag, it’s the wheel aerodynamics, in particular, the stability which can have the biggest influence on reducing the rider drag.
 

Since the rider is responsible for 75-80% of the total drag, producing aerodynamically stable wheels, that allow the rider to keep in the aero position for the highest proportion of time is the most important factor. Hence, based on the wind conditions and the individual riders’ personal requirements, a range of wheels is necessary.
 
The Hadron 625 was developed to be the most broad reaching and versatile wheel offering extremely low drag with a heavy focus on maintaining low side force and steering torque sensitivity in windy conditions. The Hadron 625 was not designed to achieve absolute minimum drag levels on the wheel but minimum total drag on the entire system in windy conditions. However, the requirements can differ, not only, depending on the wind conditions but also based on the rider needs. For completely wind-still conditions or for riders experienced with handling deep section wheels, a deeper profile section can achieve even lower drag levels (relative to the Hadron 625) if less weighting is given to the side force and steering torque sensitivity performance parameters. Similarly, for high wind conditions or for riders who are very sensitive to the steering torque response (e.g. lighter weight riders), a shallower section profile can result in even further reduced steering torque sensitivity and side force in exchange for a small drag increase.
 
For developing the new shallow and deep section Hadron wheel profiles, the Swiss Side aerodynamics team, once again, undertook an extensive CFD program, applying the same pioneering simulation and mathematical prediction methods, which the team brings from their vast experience in Formula 1 racing engineering.
 
The complete details surrounding the Swiss Side CFD development methods can be found in the previously published reports: ‘Update 4’ and ‘Update 7′
 
 

Shallow & Deep Section Rim Development Process:
In the first step, the key geometric parameter ranges were defined for investigation. For the shallow profile, the chosen depth range was 35 – 50mm and for the deep profile, 70 – 90mm. In the second step, the weighting systems defining the overall performance were defined for each the shallow and deep section profiles. As each design is simulated over a broad range of yaw (cross-wind) angles, the weighting system is defined to give a single performance figure over the complete yaw range. Following this, using a combination of iterative CFD simulations combined with mathematical prediction methods, the frontiers of possible performance were mapped. The key performance measures considered for mapping these ‘development windows’ are the drag and steering torque.
 
Building on the Hadron 625 project, the following graph shows the ‘potential performance windows’ resulting from this extensive simulation process. The Hadron 625 window (shown in red) was already presented in ‘Update 7’ and serves as the reference for the new profile development. The deep section profile performance window is shown in green and that for the shallow section profile in blue.
 
The final step was to define the performance targets in order to determine which point within each performance window offered the best overall performance. Once the point of interest was selected, finer iterations and further sensitivity checks (for tyre shape for example) were conducted around these target points to attain the final optimized designs.
 
CFD Potential Performance Windows
 
 
Results & Visualisation:
 
Shallow Section Rim:
The target for the shallow section rim was to offer a further step in reducing steering torque and side force compared to the Hadron 625, whilst minimizing the associated drag increase. The ‘potential performance window’ showed that this target was achievable. Note however, that the absolute lowest possible drag solution was not the one selected, as the target was to further reduce the steering torque relative to the Hadron 625.
 
Based on the overall performance targets defined by the Swiss Side aero team and final optimization iterations, the resultant best configuration for the shallow section aero wheel delivered a profile depth of 48.5mm, to be known as the Hadron 485.
 
Deep Section Rim:
The desired step in drag reduction was achieved for the deep section wheel relative to the HADRON 625. However, it was clear from the start that to achieve the lowest possible drag, the magnitude of steering torque and side force was going to extend far beyond the original threshold set for the Hadron 625 wheel. This is ultimately the key tradeoff of deep section aero wheels against their shallower counterparts. This is clearly visible in the ‘potential performance windows’, with the significant step in steering moment magnitude. However, it’s important to mention that as part of the sensitivity checking, the steering torque ‘characteristic’ with yaw angle, is also closely surveyed to ensure that a desirable, aerodynamically stable response is maintained. Note again, that the absolute lowest drag solution was not the one selected. It would have been possible to further reduce the wheel drag slightly but for an unacceptable compromise in steering torque and stability.
 
Based on the overall performance targets defined by the Swiss Side aero team and final optimization iterations, the resultant best configuration for the deep section aero wheel delivered a profile depth of 80mm for the front wheel and 85mm for the rear wheel, to be known as the Hadron 800+.
 
Prototypes of the Hadron 485 and 800+ wheel sets would be produced for wind tunnel evaluation. CFD yaw scans for these final configurations are shown in the following results. The Hadron 625 CFD data is always included for reference. Note that accurately predicting the stall point in CFD is very challenging and is not completely representative of the reality. Experience comes into play in this respect when interpreting the results. In reality, the stall point is dictated largely by tyre effects on the laminar to turbulent boundary layer transition. The CFD methods used here assume a purely turbulent boundary layer model. Therefore the CFD results are used to predict trends and characteristics, rather than defining absolute performance figures.
 
TAUW
 
Drag v's Yaw
 
Side Force v's Yaw
 
Side-Force-Xray-Plots
 
3D-Streamline-2 - copy
 

 

 
 
NEXT UP…
 
Stay tuned for the next updates-
 
‘Update 23 – Wind Tunnel Testing of Hadron 485 & 800+.
The newly developed HADRON profiles from CFD are put to the test in the wind tunnel. Tests are also conducted on a variety of time trial bike frames to see any variation in performance on different bikes. Finally further aerodynamics tyre evaluation is done on tubeless tyres.
Publication Date: 12th March 2015
 
 
‘Update 24 – Final Specification & Pricing.
The final specification for all of the 2015 Swiss Side Hadron wheel models will be released together with the pricing.
Publication Date: 18th March 2015
 

 
If you haven’t followed the rest of the Swiss Side Hadron Project development process, catch up at www.swissside.com/hadron or click on the instalment you are interested in below:

UPDATE 1- SWISS SIDE HADRON INTRODUCTION
UPDATE 2- SWISS SIDE HADRON INITIAL SPECIFICATION
UPDATE 3- HAVE YOUR SAY IN THE HADRON SURVEY
UPDATE 4- CFD (COMPUATIONAL FLUID DYNAMICS) OPTIMISATION
UPDATE 5- HADRON SURVEY INITIAL RESULTS
UPDATE 6- STRUCTURAL DESIGN & ANALYSIS
UPDATE 7- CFD OPTIMISATION RESULTS
UPDATE 8- HADRON GRAPHIC DESIGN SURVEY
UPDATE 9- WIND TUNNEL TESTING METHODS AND RESULTS
UPDATE 10- HADRON GRAPHIC DESIGN DECISION
UPDATE 11- FINAL HADRON SPECS, PRICING, & REGISTER YOUR INTEREST
UPDATE 12- HADRON PRE-ORDER NOW LIVE! -ORDER HERE
UPDATE 13- BACK TO THE WIND TUNNEL
UPDATE 14- ROAD TESTING FEEDBACK
UPDATE 15- 2014 EUROBIKE AERO WHEEL BATTLE
UPDATE 16- HADRON WINS IRONMAN WISCONSIN
UPDATE 17- TOUR MAGAZINE INDEPENDENT TESTING ARTICLE
UPDATE 18- SWISS SIDE PRO-IRONMAN ATHLETE BRITTA MARTIN WINS ANOTHER IRONMAN ON THE HADRON 625
UPDATE 19- TOUR MAG FEATURES THE SWISS SIDE HADRON 625 AS A REFERENCE AERO-WHEEL SET.
UPDATE 20- SWISS SIDE IN DEVELOPMENT OF TWO NEW HADRON AERO WHEELS FOR 2015.
UPDATE 21- SWISS SIDE SIGNS ANDREAS & MICHAEL RAELERT TO A TWO YEAR EXCLUSIVE WHEEL SPONSORSHIP

Don’t forget to sign up to the Swiss Side update newsletter for further updates on the Hadron project! You can do so on the Hadron page: www.swissside.com/hadron
 
 
 

February 26, 2015

SWISS SIDE SIGNS ANDREAS & MICHAEL RAELERT TO A TWO YEAR EXCLUSIVE WHEEL SPONSORSHIP

 
Zurich, Switzerland – February 26, 2015 – Swiss Side is very proud to announce the signing of the Raelert Brothers, Andreas and Michael to an exclusive two year wheel sponsorship. The brothers will be riding the full line of Hadron Aero Wheels in Ironman competition as well as Gotthard Wheels for training.
 
Andreas and Micheal Raelert
 
“This is an exciting milestone for the Swiss Side brand and it’s our clear intention to make a significant contribution to Andreas and Michael’s cycling performance,” says Jean-Paul Ballard, Swiss Side Technical Director. “We believe that the proven performance of our Hadron wheels combined with new aerodynamic development and optimization work we will do together with the brothers will have a significant impact on their level of competition. Andreas and Michael will take part in some of Swiss Side’s game changing R&D projects, which we will begin to unveil in 2015.”
 
“Swiss Side is young, innovative and competent which matches perfectly with our brand, says Andreas Raelert. “We couldn’t be more excited about this cooperation with Swiss Side.”
 
“Swiss Side have managed to make the quickest aero wheel setup and they have shown that does not have to be always the most expensive option on the market,” says Michael Raelert. This will be a powerful cooperation.”
 
Andreas Raelert represented Germany at the Olympics twice. In Sydney 2000 he reached 12th place, four years later in Athens Andreas was sixth.
 
In autumn 2008, Andreas Raelert moved from the olympic distance over to the long distance. Making his debut race on the long distance he won Ironman Arizona with a new course record. In 2009 Andreas succeeded his major international breakthrough. He crossed the finish line at the Ironman World Championships in Hawaii as the best German in third place.
 
His winning streak continued in the 2010: Andreas won the Ironman European Championships in Frankfurt. The european champion crowned the season with being runner-up at the Ironman World Championships in Kona in October 2010.
 
Since July 2011 – when he won Challenge Roth – Andreas holds the world record on the long distance with 7:41:33 hours. In this race he also improved the world record for the bike leg of a long distance. For 180 kilometers he needed 4:11:43 hours. Three months later he again made it to the podium at the Ironman World Championships in Kona. In 2011 and 2012 Andreas won the ETU European Championships on the middle distance at Challenge Kraichgau.
 
For More information on Andreas Raelert visit: http://raelert-brothers.com/en/raelert-brothers/andreas_/
 
Andreas Raelert
 
Michael Raelert won the national championships on the olympic distance at the Alpen-Triathlon in Schliersee in 2005. Three years later he repeated his victory in Schliersee.
 
In 2009 Michael moved over to the half Ironman distance. In November 2009 he reached his first international title on this distance winning the World Championships in Clearwater (Florida) with a new race record.
 
In 2010 Michael remained unbeaten over the Ironman 70.3 distance. In August 2010 he crowned this series of victories at the Ironman 70.3 European Championships in Wiesbaden: He set a new course record on his way to the title. Three months later, the european champion defended his title in Clearwater with an impressive race and claimed the title as the Ironman 70.3 World Champion again. It was a victory, which marked his name in the history book of triathlon.
 
He made his Ironman debut 2012 at Ironman Regensburg. In 2012 he celebrated the title at the Ironman 70.3 European Championships in Wiesbaden again – with a new race record.
 
For more information on Michael Raelert http://raelert-brothers.com/en/raelert-brothers/michael_/
 
ABOUT SWISS SIDE: With 50 years of Formula 1 experience, Swiss Side strives to revolutionize cycling aerodynamics to maximize the performance of affordable aero wheels. Top quality, unbeatable aero wheels delivering maximum “real world performance” at an affordable price. For more information: www.swissside.com, www.facebook.com/Swissside and @swissside.
 
 

February 16, 2015

SWISS SIDE HADRON PROJECT UPDATE 20

 
SWISS SIDE IN DEVELOPMENT OF TWO NEW HADRON AERO WHEELS FOR 2015
 

 
Zurich, Switzerland – February 17, 2015 – Swiss Side is proud to announce that they are in development on two new Hadron Aero Wheel Sets that will be released in 2015.
 
Over the next 5 weeks, Swiss Side will, once again, publish all the technical reports detailing the design and development of these new Hadron wheel set models, using their “fully transparent” reporting approach. Swiss Side has one main goal in this effort: to leave no doubt that the Hadron Aero Wheels are the best performing aerodynamic wheels available on the market at an affordable price.
 
Following the success of the Hadron 625, including overwhelming very positive reviews from some Europe’s leading magazines and blogs, Swiss Side is confident in their expansion of the Hadron wheel line. The engineering team at Swiss Side has continued the technical drive, using their unique development methods and the 50 years of aerodynamic development experience they bring with them directly from Formula 1 racing.
 
“With the expansion of the Hadron Line, our target has been to develop a lower profile aero wheel set with zero cross-wind sensitivity but still very low drag, intended for high wind or gusty conditions and a deep section wheel set for ultimate low drag for medium to low wind conditions,” says Jean-Paul Ballard, Swiss Side Technical Director. “Once again, our aerodynamics team are using extensive CFD (Computational Fluid Dynamics) and mathematical prediction optimisation techniques to develop the wheel prototypes, followed by an exhaustive wind tunnel testing and analysis programme.”
 
Building on the proven success of Hadron 625, the results for the new models again yield the absolute best aerodynamic performances in their profile depth categories. Considering both low drag as well as cross wind sensitivity parameters, the Swiss Side aerodynamics team has developed these new wheel models with a continued focus on ensuring maximum ‘real world performance’ out on the road where it matters.
 
Stay tuned for all the details as well as the pre-order launch for the new Hadron Wheel models.
 
Review the entire Hadron Project development process here: www.swissside.com/hadron.
 
A video of the wind tunnel test can be viewed here: www.swissside.com/hadron/hadron-wind-tunnel-testing

 
ABOUT SWISS SIDE: Swiss Side was founded in 2011 with a mission to revolutionize aerodynamics in the cycling aero wheel sector. The team brings over 50 years of combined aerodynamics experience from Formula 1 and focuses on maximizing “real world” performance. Feeling like the “Big Brands” are over priced?
Get higher performance wheels for less money with Swiss Side. For more information: www.swissside.com, www.facebook.com/Swissside and @swissside.
 


If you haven’t followed the rest of the Swiss Side Hadron development process, catch up at www.swissside.com/hadron or click on the installment you are interested in below:

UPDATE 1- SWISS SIDE HADRON INTRODUCTION
UPDATE 2- SWISS SIDE HADRON INITIAL SPECIFICATION
UPDATE 3- HAVE YOUR SAY IN THE HADRON SURVEY
UPDATE 4- CFD (COMPUATIONAL FLUID DYNAMICS) OPTIMISATION
UPDATE 5- HADRON SURVEY INITIAL RESULTS
UPDATE 6- STRUCTURAL DESIGN & ANALYSIS
UPDATE 7- CFD OPTIMISATION RESULTS
UPDATE 8- HADRON GRAPHIC DESIGN SURVEY
UPDATE 9- WIND TUNNEL TESTING METHODS AND RESULTS
UPDATE 10- HADRON GRAPHIC DESIGN DECISION
UPDATE 11- FINAL HADRON SPECS, PRICING, & REGISTER YOUR INTEREST
UPDATE 12- HADRON PRE-ORDER NOW LIVE! -ORDER HERE
UPDATE 13- BACK TO THE WIND TUNNEL
UPDATE 14- ROAD TESTING FEEDBACK
UPDATE 15- 2014 EUROBIKE AERO WHEEL BATTLE
UPDATE 16- HADRON WINS IRONMAN WISCONSIN
UPDATE 17- TOUR MAGAZINE INDEPENDENT TESTING ARTICLE
UPDATE 18- SWISS SIDE PRO-IRONMAN ATHLETE BRITTA MARTIN WINS ANOTHER IRONMAN ON THE HADRON 625
UPDATE 19- TOUR MAG FEATURES THE SWISS SIDE HADRON 625 AS A REFERENCE AERO-WHEEL SET.

Don’t forget to sign up to the Swiss Side update newsletter for further updates on the Hadron project! You can do so on the Hadron page: www.swissside.com/hadron
 
 

February 11, 2015

TOUR Mag features the Swiss Side Hadron 625 as a reference aero-wheel set.

 
In this month’s edition (2015 Nr.2) of both the english TOUR-International online publication and the german print TOUR Magazine, the Swiss Side Hadron 625 is featured as a reference aero-wheel set for a unique test comparing expensive vs affordable aero road bikes. The aerodynamic performance between 16 of the industry’s best aero road bike frames, with price tags from EUR 1’700 to 10’000, is put to the test in the wind tunnel.

The question asked by TOUR, is whether or not good aerodynamic performance can also be purchased affordably? TOUR magazine also once again, objectively compares the trade-off between aerodynamics and weight, as the more affordable aero road bikes tended to be slightly heavier.

The conclusions are clear… Aerodynamic performance always trumps weight and the wheels make the biggest difference! With the Swiss Side Hadron 625 and a reasonably priced affordable aero frame, you can have top level performance and speed, without having to pay top dollar!

*Once again, another indisputable confirmation of the Swiss Side Hadron 625 performance and value for money, by Europe’s biggest and most respected cycling publication!
 
Magazine in store now.
http://tour-int.com/ (download the App from iTunes)
http://www.tour-magazin.de/
 
 

February 4, 2015

Triathlon Magazine tests the Hadron 625

 
In this month’s February edition of german’s top selling ‘Triathlon’ magazine, the Hadron 625 has been tested. Testing was conducted both in the wind tunnel as well as out on the road in order to get the objective aerodynamic performance figures, as well as to see how this performance transfers to the real world.

The conclusions… The Hadron 625 (62.5mm) is almost equal in performance to the deeper industry benchmark aero wheel set, the Zipp 808 (82mm). The road testing confirmed an adequate level of stiffness, good braking performance (thanks to aluminium braking surfaces) and very low cross-wind sensitivity.
 
Triathlon’s summary: As of now, high performance no long longer needs to be expensive. Highly recommended!

*Further independent endorsement of the Swiss Side Hadron 625’s unbeatable performance and value for money, by Germany’s leading Triathlon magazine.
 
Magazine in store now.
http://tri-mag.de/
 
 

December 21, 2014

SWISS SIDE HADRON PROJECT UPDATE 18

 
SWISS SIDE PRO-IRONMAN ATHLETE BRITTA MARTIN WINS ANOTHER IRONMAN ON THE HADRON 625

Zurich, Switzerland – December 16, 2014 – Swiss Side is proud to announce that sponsored Pro-Ironman athlete Britta Martin of New Zealand has won the Ironman Western Australia SunSmart riding the Hadron 625 wheel set against a very strong international pro-field of athletes. Following dominant wins at the Ironman Wisconsin and the Challenge Taiwan, this notches up three long distance triathlon wins out of three races for Martin.

Martin didn’t just win this Ironman, she set a new course record at 8:56:33 more than four minutes ahead of the second place finisher and was the first woman to come in under 9 hours.
 
The Swiss Side aerodynamics team believe that this win by Martin continues to prove that the Hadron is one of the top performing aero wheels at a price that is far less than the “Big Brands.”
 
“The Hadron 625 wheels were awesome,” says Martin. “They allowed me to stay in my aero position the entire time and even though it was windy, I had no problem at all with the bike handling.”
 
“These type of conditions are exactly what the Hadron 625 was developed for,” says Jean-Paul Ballard, Swiss Side Technical Director. “Maximizing ‘real world performance’ by minimizing total drag by not only focusing on the wheel drag but on the stability in the wind to keep the rider in the aero position as much as possible.”

 
Review the entire Hadron Project development process here: www.swissside.com/hadron.
 
A video of the wind tunnel test can be viewed here: www.swissside.com/hadron/hadron-wind-tunnel-testing
 
Swiss Side asked Martin some questions about this huge win:

Q. Swiss Side:
How was your lead up to the race? We know you were nervous as it was a very strong international field of pro-athletes in the women’s category.
 
A. Martin:
I didn’t have much time between Wisconsin and Western Australia so I wasn’t sure how my body would respond. Normally, I like a bit more time in between to make sure I recover fully and still have enough time to get back into a good race shape. I think I did recover quite quickly from Wisconsin and I got some really good weeks of training in. It’s never a complete smooth sailing into my races, but at least in the last couple of weeks before WA, I really started to feel fit again. I was very nervous. I was shocked once they had announced the field, but at the same time was very motivated to race a high quality field and measure myself against some of the very best in the sports.
In this sport you can’t race that often and when you train by yourself most of the time, like I do, you never 100% know what shape you are in. It’s sometimes a good and sometimes a bad surprise come race day.
 
Q. Swiss Side:
So how was the swim leg?
 
A. Martin:
I am working very hard to improve my swimming. I used to come out of the water a long way behind and my goal over the last year with my swim training has been to increase my speed and try to close that gap. I had a pretty bad start and didn’t get onto feet of the faster swimmers, so I missed an early opportunity to gain a bit of drafting effect. I was very upset with myself, but tried not to worry about it, tried to relax and focus on the rest of the swim. The swim leg is very special in Busselton, you swim out along the longest jetty in the southern hemisphere and at the end turn around and swim back to the beach on the other side. At the turn around, it got quite rough, which suits me, and I managed to swim back up to a group in front. I sat on their feet for the last 400-500 meter and relaxed to get ready for the bike. Once I was out of the water, I could check out the other girls and was very happy with the group I had swam with.
 
Q. Swiss Side:
So, tell us about the bike leg. The conditions were windier today. How did you find the Hadron 625’s in these conditions?
 
A. Martin:
The bike course in WA has a lot of 180 degree turns and change of directions, which means you have to deal with a lot of cross winds. The course is completely flat and fast and so you want to be in your aero position as much as possible. Riding 180km in that position can get quite hard, but it’s very important on this course. The Hadron 625s were awesome. They allowed me to stay in my aero position the entire time and even though it was windy, I had no problem at all with the bike handling. You certainly still feel the wind pressure on the front wheel, however nowhere near as much as other aero wheels, but the most important thing is that it’s always really predictable how the wheel will react, even in very strong gusts, and this just gives you so much confidence to keep riding on the aero bars. They feel very fast and the noise giving me an extra boost. I knew that the woman’s field had a lot of very strong bike riders. My goal was to stick with my own race and not freak out about it. And as I had anticipated, they started off fast and I lost time, but by the end of the 180km, I had gained on most of them again. Going into Transition 2, I was in 6th place. The leading girl off the bike was 11 minutes in front of me but, importantly, it was only about a 4 minute gap to the girls from 2nd to 5th place.
 
Q. Swiss Side:
How did you feel heading into the run? How did that final leg pan out for you?
 
A. Martin:
I felt pretty good starting the run, which was great. I passed a few girls and was in 3rd place after about 10kms. I made up time quickly to the first two girls, so could relax and just concentrated on my nutrition. You can go from feeling good to not being able to run anymore pretty quickly, when you don’t eat enough. With 10km to go, I finally caught the front and just tried to get to the finish line as quick as possible. I don’t run with a watch so I had no idea what time I was on. With about two kms to go, a spectator said that I was on course record time, so I made sure to not slow down.
 
Q. Swiss Side:
So, how did it feel to cross the line for you’re the win? Not only the win but a new course record!
 
A. Martin:
I am so unbelievably happy to have won this race. It’s always great to win a race, not only for myself, but also for all of the people who are part of this journey and who keep supporting me and helping me achieve my goal. Each race win seems to have something uniquely special about it. Ironman Western Australia was special because I proved to myself that I can be competitive with some of the top Ironman athletes in the world at the moment. I also accomplished two important milestones in that, I ran a sub 3 hour marathon and that I broke the 9 hour barrier for the Iron distance.
 
Q. Swiss Side:
What are your plans now heading into Christmas and then into next year?
 
A. Martin:
I will have a couple of weeks off now and then slowly ease back into training. I am planning to do a good build up to have a good base for the coming season. My goal is to try to qualify for Kona next year. There are a number of race options but I have yet to decide my race program. I will let you know as soon as possible.
Thank you Swiss Side. It’s amazing to have a sponsor who is so incredibly focused on doing everything they can to make me and everyone else go faster!
 
 
ABOUT SWISS SIDE:
Swiss Side was founded in 2011 with a mission to deliver the absolute best road bike wheels on the market, based on a fusion of Action Sports product design and development with engineering from the pinnacle of Formula 1, at the best possible price. For more information about Swiss Side visit, www.swissside.com, www.facebook.com/Swissside and @swissside.
 
 

December 4, 2014

BIKERADAR – GOTTHARD WHEEL SET REVIEW


BIKERADAR.COM HAVE JUST RELEASED THEIR INDEPENDENT REVIEW OF THE GOTTHARD WHEEL SET.


“Price is a big factor – especially when it comes to wheels, because they can be a big investment and drastically affect ride characteristics. We can confidently say this wheelset is punching above its weight when it comes to performance, but a wider rim profile would make the Gotthards truly special.”
 
Click here to read the full review.


 
In the article, the editor touched on a few points that we would like to comment on.
 
Regarding the comments on the rim width of the Gotthard, yes we appreciate the benefits of wider rims as noted in the article, however this comes at a cost… weight. The Gotthard was designed primarily with the goals of minimising weight and maximising stiffness… and for a ridiculous low cost price to our customers! The 19mm wide rim was a result of this. Note that 19mm wide rims are also one of the most common widths on the market, even now. Wider designs add a significant weight penalty which affects the rider with every revolution, whereas the benefit of the reduced bulge tyre footprint only offers an advantage in cornering. Running a 23C tyre on the Gotthard offers excellent all-round performance, including cornering. Course dependent, in almost all cases the weight benefits of the narrower rim will win over the wider rim.
 
Again commenting on the reported aero buffeting of the Gotthard, we can concretely say that we neither measure this in the wind tunnel nor feel it on the road. -See the Gotthard wind tunnel testing data in the images on the Gotthard product page (http://www.swissside.com/shop/gotthard-wheelset). Again, we have only conducted aero tests on the Gotthard with 23C tyres. We can only conclude that the 25mm tyre is having an negative impact on the aerodynamic performance. We will evaluate this and report further. In the meantime, as mentioned above, with a 23C tyre on the Gotthard, we firmly believe that this wheel set offers the best overall performance of any wheel set in it’s class.