The key thing here is "Assuming the seat tube angles are identical...." Typically smaller frames have steeper seat tube angles, though I don't know about the AHH. That will, once again 'typically', mean that smaller frames will put you further forward. In my case it's one of the reasons I'm so happy with my custom frame (non-Rivendell) - the seat tube angle is much shallower than most 53cm frames (72 degrees) which allows me to get a good saddle position even though I'm using a B17.
-Ken On Wed, Jan 9, 2013 at 9:12 AM, iamkeith <[email protected]> wrote: > Someone can correct me if I'm wrong, but I think you're over-thinking > this. The frame size shouldn't have anything to do with how fore or > aft your saddle is, relative to the bottom bracket. Assuming the seat > tube angles are identical, the only thing that will change is the > amount of seat post extension. Trigonometry says it's still the same > overall triangle. On either frame, you can (should) put the saddle > where it fits you and/or where you want it. So the seatposts > recommended above are relevant either way. The difference between > making the two different frames fit would be in chosing compensating > stem length and height. As per riv philosophy, I'd go with the > biggest one that fits. > > On Jan 8, 11:07 pm, Michael <[email protected]> wrote: >> If it is the same model? >> Like, say I had to choose between a 55 and a 54 Homer. >> I think the answer would be no, because they are proportionately the same. >> But not sure. Thought I'd ask you all. >> I like shoving the saddle all the way back and wish it could go back more. > > -- > You received this message because you are subscribed to the Google Groups > "RBW Owners Bunch" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/rbw-owners-bunch?hl=en. > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
