On Apr 20, 2010, at 6:46 AM, Jay LePree wrote:
Hi all: One of the things I always wanted to know but was afraid to ask. The RBW method for determining saddle height is PBH - 10 to 11.
There's a lot of variation in this and a lot of factors (e.g., how far your saddle is pushed back), whether you pedal toe down, heel down or foot about level, etc. Your flexibility is also an issue. So is the relative strength of different muscle groups. Bike fit is a dynamic rather than static thing. Just measuring lengths, which most "scientific" fitting systems do, is not enough.
Through years of trial and error adjustments, reading lots of things on the topic, etc., I have arrived at a saddle height that is PBH -9.5 cm.
My advice is raise the saddle until your hips start rocking and then lower it a bit. Move it fore and aft until your weight distribution between the saddle and the handlebars is comfortable. Then do the measurements.
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