ericMPro wrote:
Tri.Tony wrote:
ericMPro wrote:
Tri.Tony wrote:
So if the saddle moved forward .50 mm and the pads moved forward .50 mm its a 51 - correct? The effective seat tube angle in the current set up is 75 degrees. Thus, a 51 would also have a greater seat tube angle. I am on a guru cr401. The measurements (including the frame stack and reach) are from a bikefit.
As an aside, I got the bike and then got the fit (backward - I know) but that's how it went down. I think the bike may be a little short reachwise because I am on a -20 x120mm stem.
All that said, would I be better off on the 51?
Your current position will be a more challenging fit mechanically on the 51cm P-Series, but it can be done with a stem swap. That said, your current fit numbers indicate a "slack" position, which is why I asked about your frame stack and reach (non-standard numbers, typical of Guru) and mentioned the saddle thing. At any rate, a 51cm P-Series will work, and depending on how tall you are and what your future fit evolution would look like I'd prefer you on a 51cm anyway.
At your stack height, you'd need to hit 425mm to back of pad to hit the center of the range for a 51cm P-Series. If you were getting the size S P3x you could get away with your current position fit coordinates.
Eric
On a 51, could I change my current fit moving the seat 49mm forward, so to 0 set back, which would move my reach to 435 (386 + 49)? I could also then have the same stack, I assume. I pm'd you the after photo from the fit.
I thought the px would work better for me athletically. However, my wallet says otherwise. I'll have to check second hand.
Yes this could work, being mindful that your relationship to your saddle might change and that you don't want to overload quads, so it's important to rotate pelvis to engage glutes and hamstrings.
E
I was also just checking out my current fit and there are 0 spacers below the stem. my personal ability pending, I may be able to ride with less stack.
