I'm looking for some feedback from the bike fitters here. I'm trying to learn more about bike fit and wanted to know if my thinking is correct or not.
My question is about whether your Pad X should change based on the seat tube angle of the bike.
Example:
Bike A has a seat tube angle of 81 degrees and a pad X of 470mm. If I were to get fitted on Bike B with a 78 degree seat tube angle, will my pad X be reduced proportional to the slacker seat tube angle?
If I do the trigonometry here, based on a saddle height of 760mm, moving the saddle 3 degrees aft would move my saddle back 39mm.
So am I correct in that with Bike B, my pad X would be 431mm?
My question is about whether your Pad X should change based on the seat tube angle of the bike.
Example:
Bike A has a seat tube angle of 81 degrees and a pad X of 470mm. If I were to get fitted on Bike B with a 78 degree seat tube angle, will my pad X be reduced proportional to the slacker seat tube angle?
If I do the trigonometry here, based on a saddle height of 760mm, moving the saddle 3 degrees aft would move my saddle back 39mm.
So am I correct in that with Bike B, my pad X would be 431mm?