Knee Height?
04-21-15 | 05:54 AM
#1
Thread Starter
Senior Member
Joined: Jan 2015
Posts: 1,351
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From: Madison, IN
Bikes: 2015 Jamis Quest Comp
Knee Height?
So, I know you are supposed to measure you seat height by examining your bottom stroke...but what about the top stroke?
I'm curious, at proper seat height, how close to horizontal does your femur get when pedalling?
I'm curious, at proper seat height, how close to horizontal does your femur get when pedalling?
04-21-15 | 06:42 AM
#2
Senior Member
Joined: May 2005
Posts: 4,135
Likes: 420
From: Queanbeyan, Australia.
If your femur gets anywhere near level at the top of the stroke then your cranks are WAY too long.
This is also the fly in the ointment for your original question. While the knee bend at the bottom of the stroke can be set similar for different crank lengths the top of the stroke will vary greatly for different crank lengths.
What the right answer will be will also vary for different postures. If your sitting upright then your femur getting closer to horizontal might be OK. If you want to adopt an aerodynamic tuck then you don't want it to get anywhere near level.
Anthony
This is also the fly in the ointment for your original question. While the knee bend at the bottom of the stroke can be set similar for different crank lengths the top of the stroke will vary greatly for different crank lengths.
What the right answer will be will also vary for different postures. If your sitting upright then your femur getting closer to horizontal might be OK. If you want to adopt an aerodynamic tuck then you don't want it to get anywhere near level.
Anthony
