"So I'm wondering how the amount of seatpost is affected by the seat tube angle going from 71.5 degrees like on my Hillborne to something with a more "aggressive" STA like 73.5. If we assumed the seat tube length were to remain the same length and be measured the same, would I gain or lose exposed seat post?"
In the described situation you'd neither gain nor lose exposed seatpost. Generally, you're trying to keep your "saddle height" constant across bikes. "Saddle height" is the measurement from the BB to the top of the saddle *along the seat tube. *In others words, it's the length of the ST + exposed seatpost + plus the saddle's height (different from our saddle height... Suffering from some overlapping terminology). So unless you change the ST or the saddle, the exposed seatpost remains constant. Steepening the ST angle will bring the saddle further from the ground. But the meaningful distance is to the pedals, and you want that to remain constant. On Wednesday, September 24, 2025 at 8:42:03 AM UTC-7 Davey Two Shoes wrote: > Hey Gang, > I can't get a grip on this. I am what we call "seat post challenged" In > that I have a very short PBH resulting in less than expected exposed > seatpost per size per my height. Hope that makes sense. > > So I'm wondering how the amount of seatpost is affected by the seat tube > angle going from 71.5 degrees like on my Hillborne to something with a more > "aggressive" STA like 73.5. If we assumed the seat tube length were to > remain the same length and be measured the same, would I gain or lose > exposed seat post? > > Sorry to be wordy, I have trouble explaining what I don't understand! > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/rbw-owners-bunch/5f03b789-ab63-4b2b-a626-5cc43c1c8655n%40googlegroups.com.
