PMP Pista Bent Crankset

Non-straight crank arms have been introduced in the 80ies by several manufacturers. They were supposed to have advantages in pedaling and were ought to increase the pedal's propulsion power and to lessen energy dispersion on the downstroke. Today it´s a fact that as long as the distance from crank axle to pedal is fixed, there is no pedaling advantage in using bent crank arms. There are even more disadvantages to straight crank arms like more weight and more flex. But besides all technical advantages and disadvantages i think they look extraordinary and i would like to try them on a bike.





with oval chainrings:




From: velobase and classicrendezvous