Quote:
Originally Posted by Kontact
This is all true enough, but real world it isn't such a great idea to presume that you calculate your stem length. Differences in brake hood and handlebar shape can have an unexpected impact on what kind of reach you're really going to need.
For most folks, a 25mm set back seat post will work with a standard saddle pretty well between 72 and 75° STA, which is why it doesn't come up a lot.
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Yes and no. I should have been more clear, but my comments are with the assumption that people like to use the same saddles, pedals, bars and group on their bikes. And, if so, the only variables are the STA, the TT length, the stem length, and the seat post setback + saddle position on the rails combination. The point being that STA can be informative along with TT length if the other variables are kept consistent from bike to bike. But, yeah, if you change around saddles, posts, bars and groups, all bets are off.