Hi all, currently I have 175mm cranks on my Spark (MTB) and 172.5mm cranks on my Tarmac (road)! I ride road a bit more than MTB… Now I’m buying Canyon Inflite cyclocross bike and canyon says that I need it in S size (179.5cm heigth and 82cm inseam) and that S size comes with 170mm cranks… I will u…

Hi I Ride 172.5mm on my Stork road bike and i have a Canyon with 170mm small frame too and i cannot tell any difference. I set my Saddle height from my pedal to saddle, Hence i take into account the crank length difference.

Depends largely on preferences. I think the jury’s still out on whether theres a benefit to the “correct” crank length. Most people dont even notice the difference. And anyone who does have a preference, in my experience, opts to go shorter rather than longer anyway

[image] Crank length query Equipment How much difference does 2.5mm make?! I use a Wattbike Pro to train on a lot during the winter and it has 170mm cranks but I ride 172.5mm cranks on all my road bikes. What affect does this have, if any?

You’ll be fine. I’m running 170 on my TT, 172.5 on road and MTB and 175 on the commuter. Doesn’t really make a difference.

You will hardly notice it, lest you swap between bikes immediately and really pay attention.

My Stages 172.5 PM craped out last March and have been waiting for an RMA to return on warranty to get fixed. In the meantime I’ve been running a 170 left Stages PM with a 172.5 right crank arm on my new bike and can’t tell the difference between left and right.

Won’t that give you unreliable power data? Although the difference is small in length, surely the forces you produce with left and right leg will give you terrible data given that the left Stages PM only multiplies the left left?

I do not recommend using two different length crank arms at once on the same bike. It might feel fine for now, but it will be doing weird things to your hips (rocking them side to side) and the rest of your body as you absorb and compensate for that difference ~90 times per minute. People end up wit…

I use 165, 170, and 172.5 across my 3 bikes. They all work fine. If I had tons of money, I’d get 165 across all.

TrainerRoad

Different crank length on different bikes

Equipment

onemanpeloton August 29, 2020, 5:11pm 4

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Different crank length on different bikes

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