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June 30, 2015

Swiss Side’s Instrumented Bike Project Takes Cycling CFD Into Uncharted Territory

 
As a part of the Instrumented Bike Project and their partnership with the Raelert Brothers, Swiss Side is taking CFD to new levels, never seen before, in the cycling industry. Andreas Raelert has been fully scanned and a complete CFD model is now part of their aerodynamic development arsenal. Swiss Side now releases images and a video showing the full ‘transient’ turbulent flow model of Andreas Raelert. This is another of Swiss Side’s highly advanced aerodynamic development tools aimed at helping the Raelert Brothers reach their goal of 2015 Ironman World Champions in Kona, Hawaii.
 

 
“Our Formula 1 derived CFD methods are more highly advanced than any other in the cycling industry”, says Jean-Paul Ballard, Swiss Side Technical Director. “Our turbulent flow simulations help us understand the essence of drag on the bike – rider system and how elements interact with each other in a more ‘real world’ simulation. We have applied this to the Raelert Brothers, and combining with our performance simulation, wind tunnel testing, and now the instrumented bike project, we are the first in the industry to truly link and correlate aerodynamic performance in such a detailed and realistic way.”
 

 
“Having a CFD model of me in my position on the bike is great,” says Swiss Side pro athlete and Ironman world record holder, Andreas Raelert. “Again it offers the chance to better understand my aerodynamics and to make me faster.”
 

 

 

 

 

 

 

 
Swiss Side encourages interested people to follow the project development through their social media networks for insider pictures, videos and information on this revolutionary system.
 
Stay tuned for more details on the Swiss Side Instrumented Bike Project over the next few weeks with a final complete report on the 14th of July.
 
Next week: Swiss Side & Raelert Brothers Take IB Project To The Wind Tunnel
 
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.
 
 
 

June 23, 2015

Swiss Side Teams With Raelert Brothers on Revolutionary Instrumented Bike Project

 
As a part of the Instrumented Bike Project, Swiss Side is capturing comprehensive on-road measurements of Ironman world record holders, Michael and Andreas Raelert. The data collected from the instrumented bike will be correlated with CFD simulations and wind tunnel measurements made with the Raelert Brothers.
 

 
With the data from the Instrumented Bike Project, Swiss Side will reduce the Raelert Brother’s 180km bike time in the Kona Ironman Championships by 3- 5 minutes.
 

 
“With this project we once again bring Formula 1 technology and methods directly to the cycling industry”, says Jean-Paul Ballard, Swiss Side Technical Director. “It’s about the complete aerodynamic system, which includes not just the wheels but the bike and most importantly the rider. Understanding this system is key to performance and that is what the Swiss Side Instrumented Bike Project is designed to do.”
 
From Andreas Raelert: “The Instrumented Bike is going to tell me about how I ride and how the aerodynamics affect me on the bike. That’s going to make me faster and that’s what it’s all about!”
 

 
Swiss Side encourages interested people to follow the project development through their social media networks for insider pictures, videos and information on this revolutionary system.
 
Stay tuned for more details on the Swiss Side Instrumented Bike Project over the next few weeks with a final complete report on the 14th of July.
 
Next week: Swiss Side takes CFD to a whole new level with the Instrumented Bike Project
 
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.
 
 
 

June 17, 2015

HADRON AERO WHEELS NOW IN FULL STOCK!


 

HADRON AERO WHEELS NOW IN FULL STOCK!
Buy them now, get them now!
Swiss Side is happy to announce that the Hadron 485, 625 and 800+ Aero Wheels are now available for immediate purchase and delivery at swissside.com.

 

NEW PAYMENT OPTIONS:
Swiss Side now accepts Visa, Mastercard, and Amex in addition to PayPal.

 

MIX & MATCH:
All three Hadron models are now available as single wheel purchases so you can create your ultimate combo.

 

SAVE €100 ON 3-PACKS
Buy a 3-pack of any combination of Hadron 485, 625 and 800+ Aero Wheels and receive a €100 discount (discount applied automatically during purchase). This literally means you can buy 3 Hadron Aero Wheels for less than the price of two comparable “Big Brand” wheels.

 

TUBES & TYRES
Hadron wheels can now be ordered with the tubes and tyres that we recommend.
Tyres = Continental GP4000s II 23c.
Tube = Continental Race 28
 
BUY NOW
 
 

 

VOLLES LAGER – AERODYNAMISCHE HADRON LAUFRÄDER VERFÜGBAR !
Kaufe jetzt; wir liefern sofort.
Swiss Side teilt mit, dass die aerodynamischen Hadron 485, 625 und 800+ Laufräder verfügbar & sofort zum Versand bereit sind. Shop: http://de.swissside.com/

 

NEUE ZAHLUNGSOPTIONEN:
Swiss Side akzeptiert neben Paypal ab sofort auch Visa, Mastercard & Amex.

 

MIX & MATCH:
Alle drei Hadron Modelle auch als Einzelbestellung möglich. Stelle dir deine ultimative Kombination zusammen.

 

SPARE 100€ FÜR DAS 3er KOMBI PAKET:
Kombiniere die aerodynamischen Hadron Modellen 485, 625 & 800+ zu deinem persönlichen 3 Pack & erhalte einen Discount von 100 € ( Discount wird automatisch von Summe reduziert ). Drei Swiss Side Hadron Laufräder günstiger als zwei vergleichbare Laufräder der ,, Big Brands´´.

 

REIFEN & SCHLÄUCHE:
Hadron Laufräder jetzt mit den passenden Schläuchen & Reifen zu bestellen. Unsere Empfehlung:
– Reifen: Continental GP4000s II 23c
– Schlauch: Continental Race 28
 
JETZT KAUFEN
 
 

June 16, 2015

Swiss Side To Redefine Cycling Aerodynamics In New Project

 
Swiss Side is set to release the most advanced on-bike aerodynamic measurement system ever seen in the cycling industry. Stay tuned for more details on the Swiss Side Instrumented Bike Project over the next few weeks with a final complete report on the 14th of July.
 


 
 

April 28, 2015

SWISS SIDE HADRON PROJECT UPDATE 26

 
LAST CHANCE
PRE-ORDER BEFORE MAY 12TH FOR SPECIAL EXTENDED 2014 “SPRING SALE” PRICES
 

 

 
As already mentioned during HADRON 485 & 800+ aero wheel launch updates, Swiss Side will make a minor price rise on the 12th of May to the final 2015 levels. Customers can take advantage of the extended 2014 price levels by placing their orders until then. At the same time, Swiss Side will introduce discounted 3-pack sales, where customers will save EUR100 on an order of any 3 HADRON aero wheels.
 
As a part of Swiss Side’s drive for transparency, the reasons for price changes are explained. The brand is expanding into retail and working with a limited number of outlets to build a Swiss Side Retailer and Service Centre Network (SSRSC.) “There has been a clear demand from the cycling community to be able to see, touch and test our wheels in retail stores.” says Jean-Paul Ballard, Swiss Side Technical Director. “Although progressive online business models like ours are clearly here to stay, it’s also important that good retail stores, who provide experienced service and advice, are supported. The retail stores of the SSRSC network answer this call, giving customers the chance to get in touch with Swiss Side products before purchasing, as well as the confidence of having a store to return to for any service needs.”
 
Swiss Side is also ramping up their research and development efforts. They have seen a tremendous response to the Formula-1 based technological developments they brought to the industry. Therefore, the Swiss Side team is set to ramp up their efforts in order to continue to bring previously unseen technologies and development methods to market. The first of these new efforts will be announced later in 2015. Swiss Side is driven to change the face of aerodynamics and engineering in the cycling industry.
 
2015 HADRON Aero Wheel Pricing:
– EUR 1158 HADRON 485 wheel set
– EUR 1198 HADRON 625 wheel set
– EUR 1298 HADRON 800+ wheel set
*Swiss Side wheels still remain, on average, 40% less than the “Big Brand” equivalent performance wheels.
 

 
Three Wheel Combo Packs At EUR100 Discount – On Sale May 12th!
The Swiss Side aero philosophy is to offer different wheel setups for a variety of conditions. For example, on high wind days, a rider may prefer a lower profile front wheel. Swiss Side is now offering a EUR100 discount for the purchase of any three-pack of HADRON aero wheels which gives riders the option to mix and match the 485, 625 and 800+ HADRON Aero wheels. Customers can effectively purchase three absolute top-level performance aero wheels for less than the cost of two “Big Brand” wheels!
 

 
 

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 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.