crank length, cleat position question
Posted: Fri Jun 08, 2012 12:15 pm
Little background, 184cm tall, 50, just started racing couple months back, but have been riding causally for a few years and own a few different bikes (nothing fancy, only 1 is semi suitable for racing)
Over time, I have ended up on shorter cranks (170mm usually even though I am on the border between 172.5/175mm given my height/leg length), with my cleats far forward.
Which means I appear to accelerate fairly quickly, maintain a high cadence (100+ on a geared bike with 170mm cranks) and have trouble climbing anything I can not "sprint" up.
After a little bit of reading, I decide to experiment and set the cleats back in a pair of shoes and spent time riding with 172.5mm cranks. My my climbing improved straight away, I found I can actually climb at a cadence of 80 or so, something I could not do before. My average cadence dropped close to 90 and there was a small drop in average power over distance (which I hope is only temporary, as I get use to the new geometry and make minor adjustments to saddle height & aft/foreward saddle position).
The question I have, will my body adjust to riding two very different bikes & two sets of shoes: a crit bike with 170mm cranks that I ride with cleats far forward, for acceleration and sprinting and a "climbing" bike with 175mm cranks, cleats far back which is just set up to give constant power over distance.
Or should I just get my body use to riding 172.5mm cranks with the cleats in the middle. Because it can only cope with one pedalling action and this setup is the happy medium of power vs acceleration
Over time, I have ended up on shorter cranks (170mm usually even though I am on the border between 172.5/175mm given my height/leg length), with my cleats far forward.
Which means I appear to accelerate fairly quickly, maintain a high cadence (100+ on a geared bike with 170mm cranks) and have trouble climbing anything I can not "sprint" up.
After a little bit of reading, I decide to experiment and set the cleats back in a pair of shoes and spent time riding with 172.5mm cranks. My my climbing improved straight away, I found I can actually climb at a cadence of 80 or so, something I could not do before. My average cadence dropped close to 90 and there was a small drop in average power over distance (which I hope is only temporary, as I get use to the new geometry and make minor adjustments to saddle height & aft/foreward saddle position).
The question I have, will my body adjust to riding two very different bikes & two sets of shoes: a crit bike with 170mm cranks that I ride with cleats far forward, for acceleration and sprinting and a "climbing" bike with 175mm cranks, cleats far back which is just set up to give constant power over distance.
Or should I just get my body use to riding 172.5mm cranks with the cleats in the middle. Because it can only cope with one pedalling action and this setup is the happy medium of power vs acceleration