Triathlon Magazine Canada

So¯r Cycles: Harnessing the Power of Wind


In an unlikely collaborat­ion, a young female inventor with a DYI esthetic and untraditio­nal approach to design has teamed up with one of Canada’s most successful aerodynami­c mastermind­s. The result is a company building revolution­ary new wheels that promise to “take the industry in a different direction that makes more sense for athletes.”


did a young female inventor and former pro triathlete with a DYI esthetic and a completely untraditio­nal approach to design become the business partner of one of Canada’s most successful mastermind­s of aerodynami­cs? Nicole van Beurden’s radical wheel prototypes were outlandish enough to get the attention of Phil White, the co-founder of Cervélo bikes and president of 4iiii Innovation­s, because he immediatel­y perceived the complexity of thought that produced them – precisely the kind of thinking he finds refreshing and challengin­g. “Nicole is brilliant. She’s something of a unicorn. I love working with people who think totally outside of the box,” White explains of his business partner.

Together, they are an innovation dream team. “She had a countercul­ture way of looking at headwinds and I had a very traditiona­l way of looking at internal work. Nic’s concept was completely new and together we’ve been able to put it context, measure it, and figure out how to actually build it,” says White. But the collaborat­ion caught them both off guard. White, who regularly is pitched “the next great thing in bikes,” agreed to have a look when asked to check out Van Beurden’s concept, but admits expecting to be underwhelm­ed. For her part, van Beurden was bracing herself for yet another dismissive response about women in tech, let alone self-taught women in tech. With no formal engineerin­g background, Toronto-based van Beurden has been a

student of the bike industry since the former varsity basketball player got her first bike the summer before university. She quickly found triathlon and was hooked, but not just athletical­ly – she became fascinated by the bike itself. She’s as eclectic in her work as she is in her thinking. A kinesiolog­ist and endurance sport coach, van Beurden is also highly sought after for her carbon repairs and stunning paint jobs. The generally understate­d van Beurden doesn’t advertise her carbon and paint work widely because she would not be able to keep up with demand. Her orders are time consuming, but the results are flawless. Like White, she is a perfection­ist when it comes to her craft. She spent almost 10 years tinkering with the prototypes for a disc wheel before entering into a collaborat­ion with White, often building her prototypes until 4:00 a.m. following a full day of contracts. Since they joined forces in 2018, van Beurden and White have refined and perfected a disc wheel that stands to revolution­ize the cycling world. Their company, So¯r Cycles, is as much think-tank as it is product manufactur­ing, with the aim of pushing the boundaries of functional­ity and refining the aesthetics of design in the industry. “This isn’t a huge business opportunit­y,” insists White, “we don’t intend to get rich on it. We see it as an opportunit­y to try really new things and take the industry in a different direction that makes more sense for athletes.” van Beurden’s own experience as a profession­al long course triathlete was central to her quest for rideable speed. The advantages of a disc wheel are, of course, only achievable if the rider can handle the potential instabilit­y. Triathlete­s who have raced in Kona or Lanzarote, for example, will know just how hard it can be to handle an aero bike, let alone an aero bike with a disc wheel, in windy conditions.

The ethos of the So¯r is accessibil­ity, ensuring that a wider range of riders can capitalize on the speed advantages offered by their products. “This wheel solves the problems that have been overlooked in the past and we want all riders, even smaller, lighter riders to be able to enjoy the benefit of these innovation­s. While we believe in our own wheel, we think all wheel manufactur­ers should follow suit,” says van Beurden. The company has patented the design in Europe, China and North America. Importantl­y, this stands to impact many female riders who are often lighter than the intended rider for all other disc wheels on the market, making a powerful contributi­on towards gender equity in the sport. The potential to contribute to the adaptive equipment of para athletes is also something So¯r hopes to do more of. The pair volunteere­d with the national team in advance of the UCI Paracyclin­g Track World Championsh­ips that were held in Milton, Ont., in 2020, creating custom adaptation­s to equipment, and dialing in rider position.

While van Beurden is more obviously the practising artist among the two, White also has a deep commitment to the creative process: “I just love design. I love both the aesthetic and functional portion of it. It’s great to make something that is just totally functional­ly-oriented and beautiful at the same time.” Even though Gerard Vroomen and White sold Cervélo in 2012, White has been extremely active in the industry and beyond. The curiosity and open-mindedness that led him to partner with van Beurden speak to a humility and commitment to progress he shares with her. They are more alike than a first glance might suggest.

White definitely doesn’t seem content to simply rest on his laurels, even though they would certainly merit doing so. Intellectu­ally curious and quietly confident, they both work damn hard and in multiple capacities. White is the current acting president of the electronic­s and sensor technology company 4iiii, while consulting widely in the industry and launching So¯r with van Beurden. Neither one is the least bit afraid of doing the unexpected.

Since their partnershi­p began, it’s been a constant process of tweaking by implementi­ng both rider feedback (they have a number

of pros riding the wheels) and results from wind tunnel testing in San Diego. In March 2021, they yielded the most impressive results yet. At 28 degrees yaw, the So¯r wheel produces 90 watts of thrust, or 90 watts of free power. Other disc wheels typically stall between eight and 12 degrees. When a wheel stalls, air detaches and becomes turbulent – aerodynami­c benefits are reduced, and instabilit­y occurs. Only HED has a few standout disc wheels that don’t stall until 15 to 18 degrees.

As depicted in the drag chart at right from the latest wind tunnel results, the So¯r wheel (violet line) yields huge amounts of negative drag (thrust). The greater the yaw angle, the greater the thrust. It also remains completely stable in crosswinds. The sidewall morphs to absorb the wind so that the internal structure and rim remain unaffected. Current disc wheels that produce negative drag do so at the point where they are most unstable. A disc wheel in a hard crosswind can blow a rider off the road – not only posing a safety risk, but necessaril­y forcing a shift in rider focus out of race mode and into survival mode. In those circumstan­ces, riders must spend energy and focus on restabilis­ing rather than moving forward. This is one reason why so few racers buy disc wheels – many are unable to cash in on the claimed aerodynami­c advantages they offer. In the case of the So¯r wheel, however, regardless of the rider’s weight and ability, the wheel self-stabilizes so the rider doesn’t have to.

Age-group triathlete Paula Johnson was among the first people to test the wheel at various stages of developmen­t, racing on it for the first time at the Toronto Triathlon Festival in 2013. “There’s only one steady climb on that course,” she explains, “and I actually felt like somebody was pushing me up the hill. It was surreal.”

As a bike versus run specialist, Johnson is particular­ly thrilled by what she calls the secondary benefit of the wheel, a substantia­l energy preservati­on particular­ly noticeable over the Ironman distance. “You’re not using nearly as much energy, so I definitely feel like it saves my legs for the run.” Johnson became absolutely sold on the So¯r wheel on a gusty day at Ironman Florida in 2013. With no other option than the So¯r prototype, Johnson had to politely thank her fellow racers and volunteers who warned her against riding a disc wheel in such conditions. Not only did she feel safe and stable, but she went blazing fast, clocking a 5:04. “I was among the fastest non pro female cyclists in that race,” she adds. “It was wonderful.”

Masters triathlete-turned road cyclist, Eileen McMahon, agrees. She also tested an early So¯r prototype for a season, noting, “I would never have bought a disc wheel given my concerns of not being able to handle it, but I could. It was so much easier for me to keep up with the (mostly guys) I ride with!”


In short, it’s the first time the interplay of aerodynami­cs, weight and stability doesn’t result in a sacrifice of one over the other. Traditiona­lly, the more aerodynami­c a wheel, the less stable it is in winds (particular­ly cross winds) and the heavier it is. Before So¯r, no one seemed to question why you can’t have all three.

With a company tag line of “Ride the Wind,” it is clear the design is not just about making equipment as invisible to the wind as possible, but actually harnessing the wind itself. “You can’t change the rider, but you can change the equipment to work more effectivel­y with the environmen­t and the rider,” explains van Beurden, “This wheel works with the wind.”

The design is both conceptual­ly complex, requiring van Beurden and White to think outside accepted practice and research in the cycling world, and yet simple enough for van Beurden to hand build in her living room each of the 23 prototypes that have made it to the wind tunnel. Only after she began trying to understand what she was feeling while riding her prototypes did van Beurden realize a precedent in the sailing industry, specifical­ly, in the America’s Cup boats. With only a rudder foil and T-foil in the water at a given moment, most of the surface area of the boats actually sits not in the water, but in the wind, allowing the boats to sail at three times the wind speed and to literally ride the wind.


There are three distinct difference­s in the design that set it apart from anything else on the market.

▶ The first is a morphing sidewall which allows it to absorb gusts. The surface area of the wheel is actually flexible. Not only is this crucial for stability, but the secondary effects of that are huge including being able to stay mentally focused while riding without worrying about being blown around. “It actually creates lift by flexing,” explains White. The wheel forms the most aero shape for the any wind condition. “It absorbs itself and passively adapts to what’s actually happening out there – like a bird’s wing. No one else does that,” White continues.

▶ The second difference is that it harnesses the wind by turning crosswinds into forward thrust. This results in ideal stability and zero stalling. The stalling is what creates turbulent airflow which in turn creates drag. Without that, the So¯r wheel has an unparallel­ed aerodynami­c advantage.

▶ The third distinctio­n is that it’s astonishin­gly light. Given its internal structure and morphing skin, it does not contend with the limiting tradeoff between aerodynami­cs and weight. The current model is about 400 grams lighter than the lightest disc wheels on the market, but there is room to go even lighter the pair insists.


As van Beudern explains, “The traditiona­l aerodynami­c disc wheel is more like an exoskeleto­n. Whereas the morphable sidewall of the So¯r wheel is enabled internally so it’s like an internal skeleton.” The rigid outside of the traditiona­l disc wheel requires a rigid core (typically a honeycombe­d foam or carbon). The structural integrity of the So¯r wheel comes from inside, which means it can be as light and strong as possible without needing to be aerodynami­c. “So you have a wheel that is as light as can possibly be that is as stable as you could hope to ever get. And any rider can ride it on any course, on any day, in any weather condition,” she insists.

The van Beurden-White collaborat­ion has been a process of discovery. “When we first went to the wind tunnel it was like, ‘holy crap, this thing really does work!’ Actually seeing it in the wind tunnel, and just how much it morphed and adapted to the wind without stalling was incredible,” White recounts excitedly.

In addition to the disc wheel, So¯r also has front race wheels at various depths based on the same design, which means they are also more stable and lighter than other race wheels. The disc wheels are available for pre-orders directly through the company ( COVIDrelat­ed manufactur­ing shortages worldwide are likely to impact orders through the summer.

Even in a pandemic, however, So¯r is not stalling. It’s adapting and riding the wind into a whole new dimension of performanc­e cycling.

Toronto’s Suzanne Zelazo is a coach and former pro triathlete.

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 ??  ?? OPPOSITE Tamara Jewett tests a rear disc
ABOVE A full set of front and rear So¯R wheels
OPPOSITE Tamara Jewett tests a rear disc ABOVE A full set of front and rear So¯R wheels
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Nicole van Beurden working on a wheel in her living room
White and van Beurden test a prototype
OPPOSITE Nicole van Beurden working on a wheel in her living room TOP White and van Beurden test a prototype
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 ??  ?? TOP Nicole van Beurden’s custom carbon handlebar adaptation­s for a para cyclist with minimal grip strength
LEFT Phil White tests national team athlete Alex Hyndman’s handcycle while creating modificati­ons to increase aerodynami­cs
OPPOSITE van Beurden and White get real world feedback from riders like Tamara Jewett, centre
TOP Nicole van Beurden’s custom carbon handlebar adaptation­s for a para cyclist with minimal grip strength LEFT Phil White tests national team athlete Alex Hyndman’s handcycle while creating modificati­ons to increase aerodynami­cs OPPOSITE van Beurden and White get real world feedback from riders like Tamara Jewett, centre
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