CRANK ARM FIT
Crank arm length is one of those measurements that I don't take lightly. With many schools of thoughts and sizing charts out there for proper crank arm length, I find that it's up to the rider to feel and see the difference for themselves.
I tend to believe that shorter is better, however one must feel that difference. Once correctly fit on the dynamic fit bike, I can change the crank arm length to a variety of lengths to find the right one for you. Just because you may be six feet tall, that does not mean that a 175mm crank is best. I have put many six footers on 165mm crank arm lengths. This was determined by feel, power output, pedal stroke analysis and video.
Why would shorter be better? As a kinesiologist, I find that providing a smooth pedal stroke will provide the best benefits long term. If you are always "hiccuping" during your pedal stroke, or feel you are always having a hard time getting over the stop of your pedal stroke, then a shorter crank arm is in order. Before jumping the gun on changing crank arms, it is important to me for you to feel the difference in what the correct length crank arm can provide.
Longer crank arms mathematically seem to provide more leverage, however keep in mind muscle balance and correct motion. If the crank arm is too long for the leg to bring over the top, you start to recruit other muscles that aren't supposed to help, you shift your position on your saddle, or you may swing your leg out to make room. Raising saddle height will do no justice to this either. Saddle height is not going to tell you what crank arm length to put on.
FOR DETERMINING CORRECT CRANK ARM LENGTH, WE SUGGEST YOU GO THROUGH A FULL FIT PROCESS. AT TIMES, WE DO CONSIDER JUST CRANK ARM FITS, HOWEVER IF DURING THE SESSION WE DETERMINE THAT YOUR INITIAL FIT IS NOT CORRECT, WE WILL ASK TO UPGRADE TO A FULL FIT SESSION.
CRANK ARM FIT $75 - 30 MINUTES