Originally Posted by
RoboChrist
It's right in the calculation. If you don't subtract the crank arm length, you're not using the 109% method.
1.09 x inseam - crank arm length = BB to saddle height
Yup!
I fiddled around with saddle height until I felt like I got the right height. Then I measured, and it was 109%-crank arm length - within a half centimeter!