http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3663916193&category=56195
$395, retails for over $900, used 6 mos, excellent condition
Rotor Cranks, RS03 Road Double Titanium, 175mm, BSA, 53/39
6 months old, excellent condition, low miles. Retails for $975 MSRP. I got another set of 172.5 Rotors for my time trial bike (ride 172.5 Rotors on my road bike as well) and I’m selling these 175’s.
Rotor is an innovative pedalling system that eliminates the dead point. The dead point of conventional pedalling is the void that occurs when the pedals are vertically positioned (one at the top and the other at the bottom), which is a moment at which neither leg can transmit any power.
The dead point limits the cyclist’s performance, causes tendonitis and injuries to the knee, as well as discontinuity in the traction. Rotor System provides the definitive solution to this inefficiency, which is typical of conventional pedalling, by definitively eliminating dead points.
Rotor makes the cranks independent in such a way that they are not aligned at a fixed 180º, but rather the angle between them varies during the cycle in such a way that one pedal never coincides with the one below, thus avoiding power vacuums. Such an effect is achieved by the use of independent cranks that are synchronised by means of an exocentric axel and two rods, which vary the development during the cycle and adapt to the muscle power of the legs at all times. By eliminating the dead point, Rotor optimises the effort of the cyclist and reduces the risk of injury, providing a notable increase in performance and more comfortable and healthy pedalling.
The Benefits provided by Rotor System By eliminating the dead point, the Rotor system maximises performance, as shown by scientific studies carried out by prestigious international universities. The results demonstrate that Rotor achieves a real increase in power of up to 16% (equivalent to an average advantage of 3 minutes in an hour), as well as a reduction in lactic acid and cardiac effort.
a) Reduction of lactates: Rotor reduces the concentration of lactates in the blood thanks to greater muscular efficiency, thus reducing fatigue.
b) Reduction of cardiac effort: Consequently, as a result of the reduction of lactates in the blood, cardiovascular demand is less.
c) Reduces knees injuries: Conventional pedalling subjects the knee to great articulatory stress when the leg is pushing on the upper dead point. By eliminating the dead point, Rotor reduces the typical knee injuries of the cyclist, due to less stress on the knee tendon. Thanks to the variation of the development during the cycle, the push is more progressive and the articulatory stress is more uniform.
Rotor can be fitted to all the frames and accessories commercialised on the market, and is available in road (double and triple discs) and mountain bike versions. Rotor can be adapted to all user’s profile and use, whether leisure or competition, thanks to an exclusive regulation points system.
Read more and get specific details at http://www.rotorcranksusa.com