In fairness to Rule 28, though, wind tunnel testing is still costly and being a small company it clearly doesn’t have unlimited resources.ĭigging into the data shows that there are naturally a few caveats, the principle being that the maximum 12.6 watts saving vs the standard baseline sock (which Rule 28 stated was a Morvelo Fluro sock) occurs at a speed of 60kph. Therefore, an ideal solution might be to test at varying speeds and varying yaw angles. The obvious downside of that method of testing is that it leaves out the speed variable and Rule 28’s data makes it clear changing that can have a significant effect. Though we’re admittedly not qualified aerodynamics experts by any stretch, standard industry practice for wind tunnel testing bike stuff has tended to be at fixed speed (usually around 45kph) and varying yaw angles in recent years. It’s possible that changing the yaw angle could have affected the results, but Rule 28 told us it believes testing at different speeds with a fixed yaw angle provides more useful results than testing at a fixed speed over varying yaw angles, and this enabled them to test more socks with the wind tunnel time it had.
#BENEFITS OF COMPRESSION SOCKS FOR CYCLISTS TRIAL#
Rule 28’s test was conducted in the Silverstone Sports Engineering Hub’s large wind tunnel, with a rider pedalling on a SwiftCarbon Neurogen time trial bike, and all tests were performed at 0 degrees yaw (which essentially means into a straight headwind). While it’s probably best to keep the salt close by, Rule 28 has made the data behind its claims publicly available on its website, so we can attempt to draw our own conclusions. It’s usually at this point that we’d advise taking these kind of outlandish-sounding manufacturer claims with a healthy pinch of salt.
Simon Bromley / Immediate Media Aero socks? Really?
For those that care, our set of size large socks weigh 36g for the pair.
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