Elliptical or Rotor Cranks

I have been boldly predicting for some time that elliptical or rotor cranks have no effect on cycling performance.

It would seem that my instinct and logic were good as this study by the Journal of Sports Science and Medicine says this

“These results suggest that the Rotor system has no measurable impact on time-trial performance.”

Though of course a study was not required.  Despite some big name (and dare I suggest somewhat cynical) riders using non-circular cranks, notably Sastre and Wiggins, it is clear that they do not work. 

It would be trivial to prove that they work.  Simply get a rider or two to do a couple of sessions with a power meter.  If they record more power with elliptical cranks they work.  If they don’t, then they don’t. 

Is it really possible that this simple test has eluded the pro pelaton?  Given the lengths that riders go to to attain marginal benefits, if they could simply change their chainset and get some ‘free’ power would they not have already done this?  You betcha.

No Comments on “Elliptical or Rotor Cranks”

  1. 1 DC said at 5:36 pm on September 26th, 2009:

    Did Wiggins lose his third place at the Worlds because of his elliptical chainrings? How do they set the front mech to correct position of just clearing the rings when the ring height is constantly changing? Not possible, so the chance of dropping the chain is increased.