OK so technically yes, you could fit on either a 54cm or a 56cm P5d. On the 56 the pads would be all the way back in the "+0" position.
Looking at your fit pic (which I won't post here because of the watermark), I'd probably have you slightly longer and lower than you are now, and maybe you'd still fit on a 54 after those changes, but maybe not, you *might* run out of reach, maybe after a season of adapting and adjusting and racing. Adding the tiltable EX10 mono-riser to the P5d really opens up the reach options and the pads would no longer be slammed back on th 56 nor would you run out of reach on the 54.
Thing is, in the old days I'd say get the bigger bike because that would mean more aero frame making up the stack and reach you need rather than un-aero spacers and cockpit hardware, but with the mono-riser that's no longer a concern.
As far as Pad Z goes, you're in the ballpark for the stock EX11 pad width on the P5d, but of course using the EX10 from the P3x gives you the option of tilt.
And finally, exposed saddle... the top tube of the P5d is slightly sloping, roughly at 521mm so you'd have about 207mm of exposed seatpost and saddle. Maybe a little low but not out of the realm of the possible. IOW, you'd have 20mm less seatpost exposed on the 56 than on the 54 P5d.
So I guess the question is, how do you feel about your current fit? What do you think the future holds for you as far as your fit progression goes?
Eric
SBRcanuck wrote:
Hi Eric, took some careful measurements of the felt tonight, including arm pad width. My reach was also a little longer than I thought.. Stack 64.5
Reach to back of pads 45
Reach to center of pads 48.7
Pad width center to center 19
Pad width outside to outside 28
Saddle height 728mm
The increase in reach seems to bump me to the 56 on the cervelo sizing tool (sliders) I think?
Any idea what the measurement is on the 56 from BB to top of top tube at the saddle insertion?? Wondering if the post would be jammed way down into a 56 frame with my saddle height...
Thx !!
Eric Reid
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