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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.
 
 

November 27, 2014

RCUK Top 100 Cycling Products of 2014

 
HUGE NEWS! RCUK has included the Swiss Side Hadron wheel set in their guide of the 100 best road cycling products of 2014/2015.
 
RCUK Top 100 Cover
 
This is what RCUK had to say about the Hadron wheel set.
“Swiss Side invested considerable time and effort in the development of the Hadron 625, and it’s possible to feel the benefits of an extensive wind tunnel testing programme on the road in the ability of the wheel set to retain speed on flat and undulating roads. Swiss Side founder Jean-Paul Ballard is an aerodynamicist with the Sauber Formula One team by day and the Hadron 625, which combines an aluminium braking track with a carbon shroud, measure 62.5mm deep in a design which adopts a toroidal profile to improve crosswind stability, and 23mm wide, which in turn allows the tyre to adopt a broad footprint on the road.
A patented freehub mechanism and Sapim’s flagship CX Ray spokes complete the look, with the former spinning smoothly and making for a satisfying audio accompaniment. A deep-section wheelset like this is never going to be the lightest but the stiffness of Hadron 625’s, which have a claimed weight of 1,686g, ensures they respond well to out-of-the-saddle assaults.”

 
RCUK Top 100 P1
 
 

3 Peaks 2014

 
Cyclo-what?
So what’s all the buzz with cyclo-cross right now? We caught up with Swiss Side Team rider and aerodynamicist, James Eddison, fresh back from competing in the Three Peaks Cyclo-cross race in the UK, to find out what it’s all about.
 

 
Cyclo-cross is an incredibly fast growing sport within the cycling industry. This previously rather eccentric side of cycling, caught somewhere between the road cycling and mountain biking genres, is currently undergoing an outright revolution! This arm of cycling, which previously employed rather outdated technologies and equipment, is quickly becoming a true pioneering R&D extension of road biking. You can find all the latest technologies coming from cyclo-cross: disc brakes, single chain rings, thru-axles. Whether these technologies prove to have relevance for road biking and make the step across, is yet to be seen. James explains why he loves cyclo-cross so much.
 
Q. Why cyclo-cross?
A. I first started because of the ‘Three Peaks’, an epic event of pain and turmoil in my home area of the Yorkshire Dales. This is a rather particular event though, because it involves a lot of running up incredibly steep hills with the bike on your shoulder. But in general, cyclo-cross is a great middle ground between road cycling and mountain biking. I love the simplicity of it and the directness of the bike to the ground, which demands excellent bike handling skills to be quick on the course. It’s also a great winter training sport!
 
Q. Tell us about your bike for this year’s Three Peaks Event
A. As I’m light, I needed a lighter bike for when I am carrying it. I also wanted hydraulic disc brakes because of the typically muddy conditions and the steep slippery descents. Then when the SRAM CX1 single chain ring setup was released for cyclo-cross, then I chose to get that for the weight savings and the benefits of reducing the chance of dropping the chain off the front.
 
Q. So apart from the SRAM CX1, what was your bike setup?
A. I was using a full carbon Trigon frame and forks, a new Swiss Side prototype disc brake wheel set, with Maxis Locust rubber. Total weight was 8.5kg with pedals which was 1.0kg weight saving on my setup from last year.
 
Q. And did the new setup pay dividends for you?
A. Absolutely! I got my fastest times on both the climbs and the descents and set a personal best for the event. On the down hills it was simply awesome as the new frame geometry I was running was slightly higher at the front. As well the brakes were just a huge leap forwards in performance.
 
Here is the complete race report from James about the Three Peaks Cyclo-Cross race:
Three Peaks Cyclocross 29.09.2014
62km and 1524 meters of climbing
www.3peakscyclocross.org.uk
 
The race is on my mind constantly through the year and I loosely build my year’s training around my nemesis that is the Three Peaks Cyclo-cross race. The usual cycle of training here in Switzerland is; Winter – Cross country skiing, culminating in the Engadin Ski Marathon in March, then when the snow goes, running and riding take over. Mid August is a great local ‘Berglauf’ (mountain running) competition over five consecutive nights with typically 4km with 400 vertical height meters, each stage. This is great for training your maximum heat rate zone and holding it, which is important for the big steep climbs of the Three Peaks. After that, it’s just a matter of building on both the running and cycling form up to the race.
 
A cold one week before the race gave me reasons to be nervous, but the human body can be amazing at times, and by race day all seemed to be clear.
 
For once, race day came and the weather was perfect. Around 16C, no wind and dry. I started to hesitantly think a PB could be on the cards.
 
The start of the race is ‘neutralized’ behind a pace car for the first five km’s, except it’s a nervous 5 km at around 40km/h. Many people not used to riding in a pack, which results in surges and this year was no different. Within a couple of km there were people already scattered over the road, luckily not including myself.
 
It doesn’t matter how many times I go up the first peak of Ingleborough, or how well I have trained on our local Swiss hills with a similar gradient, it still hurts… a lot! Riders pull themselves up the hillside using the grass in front of their faces, or grasp the fence next to the wall we climb along. ‘Simon Fell’ the first part of Ingleborough climb is simply brutal. My Strava data can pick out 45% inclines in the upper sections! After Simon Fell you get a slight rest before the final rocky climb to the top. I was going well, roughly 5 minutes ahead of my previous PB to the top of this first climb.
 
Descending Ingleborough was a delight this year, mostly dry, fast and flowing. Once at the bottom, it’s onto the road, picking up a bottle and gel from my dedicated support crew before pushing on.
 
This transition is all about getting as much nutrition into the body as possible to prevent energy loss and more specifically cramping later on in the race. I was thankful for a pack to ride in and the road section was swiftly over before hitting the gravel again at the bottom of the second peak, Whernside. This climb is deceptive; it starts of as a fast gravel road, then gets steeper, then begin the steps, which go on and on and on. Even when the steps stop, there are three ‘false summits’ to climb, mixed with shallow rideable sections in between. The previous two years, I have been blown off the bike by high winds on the ridge but this year it was strangely and thankfully calm.
 
The descent back down Whernside is probably my least favorite – rocky and technical to start with, then limestone pavement with drainage ditches you have to be careful not to pinch puncture on. In the lower regions there’s a really rocky path. Many people avoid it and make a path through the grass but I usually stick to the rocks, which was the quickest line this year to the dismay of others who took to the grass! The rocky path soon is over and you’re onto the relative bliss of and undulating gravel path again, which is good fun when you have the legs, spitting you out alongside the iconic Ribblehead Viaduct. This is the next pit stop point for riders with their support crews before continuing off on the road to Horton for the climb up Pen-y-Gent, the final peak.
 
This transition is the one I suffer with the most each year. When I look at my split times to others, it’s horrifying to see my time loss here. This year was very much about damage limitation on this section. Note to self, you can’t get away with a lack of training miles on the bike!
 
The turn off the road in Horton offers a shot of adrenalin as shouts from people encourage you with ‘nobody has come down yet’. Pen-y-Gent is the only of the three peaks that you must ride up the same path you descend on. It’s always a grind going up this lane and it’s the one where you can ride a good chunk of it. This year on the new bike I’d opted for new SRAM CX1, with the lowest ratio being a 38/32. Relative to last years set up of a 34/34 this was hurting, a lot! 3/4 of the way up is where you end up picking up the bike up and carrying it. The last bit of the climb is just a long slog, with more and more riders now coming down the hill past you, the feeling of nearly being at the summit kicks in. The timing transponder and the mountain rescue team at the top is pure relief and it’s time to enjoy my favourite descent. This one is fast and fun, bunny hopping drainage ridges then hitting the loose rocky sections as fast as you dare. The buzz you get at the bottom of the lane where hundreds of spectators and supporters are crowded is fantastic, cheering on every rider, it’s magic!
 
Then it’s onto the final stretch of road back to Helwith Bridge. I find my road legs again and look around, nobody in front or behind, but looking at the Garmin I still see a PB on the cards and start to push. Coming into the last bend just before the bridge I shift down a couple of sprockets to sprint over the bridge and the impossible happens… my chain drops between the lowest sprocket and frame drop out with what proved later to be because of a loose crank arm. After a few seconds confusion that feels like minutes, I shift up and back onto another sprocket and sprint to the finish line. 3.54.33, ten seconds faster than my previous PB! – Happy and relieved!
 
Considering the lack of training this year getting the PB was a good feeling, position wise it was not a best, but for me the race is about beating myself, as I’m never going to win this race!
 
Thanks to: SwissSide Wheels for providing me again with bombproof wheels (prototype disc specific) and the new disc brake bike build. Jean-Michel, Dave, Andy for your unwavered support and having to drink crap tea again for the day, The Three Peaks organising committee for another great race and all the marshals and Mountain Rescue squads who without, this world famous race would never happen. Thank you!

 
 

November 17, 2014

SWISS SIDE HADRON PROJECT UPDATE 17 – English

 
TOUR Magazine Independent Testing Article

 
Swiss Side and the recently released Hadron 625 wheel set, are featured in a 4-page article of this month’s (October) edition of TOUR Magazine. TOUR is a German publication, which is Europe’s “Number 1” magazine and one of the world’s most respected. TOUR was supplied with one of the first production sets of Hadron 625’s, which were then subjected to a rigorous testing program, including wind tunnel testing, to independently verify that the Hadron 625 is indeed the leading aero wheel set in its class.
 
To pick up the English version of Tour Magazine and the Swiss Side Hadron Aero Wheel “Throwing Down The Gauntlet” article, go to your mobile device application store and search Tour Int (or go to www.tour-int.com for more information). The article is in the 22.10.2014 issue.

 

 

 
TOUR tested using their independent testing protocol, along with their own equipment including reference bike frame and dynamic leg dummy. The test took place on the Airbus base in the south of Germany at the GST wind tunnel. Note that Swiss Side and TOUR magazine use this same wind tunnel for their testing purposes.
 
The target of the test was to compare Hadron 625 against the current leading aero wheel sets on the market, including Zipp 404 FC, Mavic CXR60 and one of the industry’s benchmark aero wheels, the Zipp 808. The test was conducted at the industry standard 45km/h and with crosswind angles through the range from –20 to +20 degrees.
 
photo 1
 
As expected from Swiss Side’s ‘total transparency’ approach to publishing performance data, the Hadron 625 performance tested by TOUR, matched exactly the already published results from the extensively documented and published Swiss Side tests (see www.swissside.com/hadron).
 

The Hadron 625 is independently proven to be the leading
aero wheel in the 60mm depth category.

 
The top ‘Big Brand’ competitors against which the Hadron 625 was tested were Zipp 404 Firecrest and Mavic CXR60. Only the deeper (80mm) Zipp 808 is shown to offer a small 1.2% improvement in absolute drag numbers. (Note that the side force component of aero performance is not considered by the TOUR testing protocol, a point where the Hadron 625 has shown to offer a significant advantage over the Zipp 808).
 


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

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