Originally Posted by
Rolla
Seat should be high enough that you get adequate leg extension. It has nothing to do with how your feet interact with the ground.
And it's not just your quads that make the pedals go round, btw. Glutes, calves, and hamstrings do a lot of the work, and proper saddle height facilitates all of them.
(You should ask the mods to combine your two identical threads)
Originally Posted by
noimagination
Another estimate: your knee should be flexed by about 30° at the bottom of your pedal stroke. (That is, flexed 30° from an imaginary line straight down your leg - you don't want your lower leg to be at a 30° angle with respect to your upper leg.)
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Originally Posted by
shelbyfv
Your correct saddle height is related to pedal distance, not the ground.
This really can't be emphasized enough: the critical measure is how much your knee is bent at the bottom of the pedal stroke. Where your foot is in relation to the ground while you're on the saddle is of no consequence whatsoever. Any relationship between whether or not you can touch the ground with your foot while in the saddle and maintaining a proper knee angle while pedaling is purely coincidental, and probably won't apply from bike to bike.
Are you experiencing any actual problems with your pedaling?