What the hell is going on with these cranks?

General eBay finds
1

EPHGRAVE NO 1 TRACK ROAD PATH 531 VINTAGE FRAME FIXED | eBay

Crazy idea… but surely they couldn’t have any possible effect on the function of the bike.

(The auction is only for the frame, but worth a look anyway.)

2

Theyre “L” PMP cranks

pretty neat! but “A moment’s thought shows a straight crank and an L crank always have the same relation between pedals, chain, and bottom bracket. Thus, there is no advantage to L cranks. And an L crank always has more material than a straight crank, so is always at a disadvantage for weight, strength, stiffness, and/or cost.”

so maybe not the best idea…

edit: I dont think theyre included in the listing anyway though.

3

So why do they exist?

4

The "L-shaped design increases the pedal’s propulsion power and lessens energy dispersion on the downstroke, "

according to PMP

5

I’d rock those cranks for cool factor
I’d rock those cranks for ‘whut’ factor
I’d rock those cranks for propulsion factor

6

in that case, what Dylan said.

Form > function any day.

7

exacty