160mm cranks for TT?

Discuss light weight issues concerning road bikes & parts.
Posts: 87
Joined: Fri Apr 13, 2012 7:25 pm

by jockster

I received my 160mm Rotor 3D cranks today and installed them on my TT bike together with a Rotor QXL 54/41T chainring set.

Pedal action feels very smooth and I find it much more effortless to maintain cadences around 100rpm. No issues maintaining power, but that was expected. Still need some more work on getting saddle height correct though.

In due time I will try to post some results here using the Aerolab in Golden Cheetah's Aerolab to verify if there's any measurable comparison between my 160s and ordinary 172.5s that justifies the cost of shorter cranks.

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by WMW

Baseline would be to raise the saddle the same amount as the cranks were shortened, and move it back on the rails about half that amount.

Are you doing anything with the bars?
formerly rruff...

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Joined: Tue May 10, 2005 4:59 am

by gregalfa

I am 170cm and use 165mm crank arm for TT bike.
I love it and give better leverage to push harder gear. I am thinking to go 160 for TT and 167.5 for road
The Great CarboniO

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