Originally Posted by
Iride01
How scientific do you want to be?
Just measure the distance from the top of the pedal to the top of the saddle where you sit. I put my pedal at the bottom when I do this. Then transfer that measurement to the other bike or same bike after installing the clipless pedals, measuring to the top of the part you clip into.
Then several times after riding a time or two, you might want to adjust one way or the other. Might need to slide the saddle fore and aft too if you do change height.
Type of shoe and cleat will probably make something different in height, but for a first time setting, don't dwell too much on that. I don't know of any chart that tells how much extra to allow for brand x with z over brand y with w.
But if you got to be perfect the first time, well, that's not me.
Well, I didn't want to go into too much detail because it'll probably just complicate the discussion.
But the crux of my question is ... am I going to have enough seat post with the bike I'm looking to purchase...
My height is 183cm, my cycling inseam is 92cm.
I'm looking at buying a 2021 size 58 Domane SL5.
This bike's maximum BB to saddle rail length with the "tall mast" seat post option is 78.5cm.
I don't have the bike yet, nor do I have clipless pedals/shoes.
On the bike I'm riding now, I have the BB to saddle rail distance set at 78cm.
I'm currently using flat pedals, and will move to clipless pedals with the new bike.
My current crank length is 170mm but is 175mm on the new bike.
Am I going to have enough saddle height with the size 58 Domane SL5 and clipless?
The reason I ask is I've never used clipless pedals. If the move to clipless requires less, no change, or up to 1cm extra saddle to pedal distance, the size 58 Domane will work (bike is in stock and I can get it immediately). If the move to clipless requires more than an extra 1cm of saddle to pedal distance, a size 60 Domane will get me an extra 2cm over the size 58, but it's special order in Japan so a six month plus wait.