I too am struggling between deciding on the size for the CF.
Did a bike fit (Guru) a few months back and these are the numbers:
HX: 454mm (handlebar horizontal)
HY: 605mm (handlebar vertical)
SX: 195mm (saddle clamp to nose 100mm)
XY: 691mm (saddle clamp vertical)
Saddle thickness: 50mm
Saddle setback: 95mm
Saddle height over BB: 766mm (although I think it should be more like 740mm!)
Drop from saddle to bars: 76mm
Reach from saddle to extension tip: 892mm
Extension length: 340mm
Pad reach: 439mm
Pad stack: 665mm
Pad height: 60mm
Pad offset: 15mm
Pad Center to Center: 250mm
Handlebar + skibend extensions: T4+
Looking at the numbers on Canyon's Speedmax CF webpage I'm deciding between S with heaps of spacers under the pads and M with saddle height set at 0? The saddle height and reach is what is confusing me!
Thanks for including all your numbers it really helps me decipher the fit.
I'm supremely confident that the medium Speedmax CF is the bike for you and to explain that let's start with the easy one, the Pad Y. The range on the medium is 605-692 and your 665 sits pretty nicely in the middle of that. You need 60mm of "up" and I think you could do that nicely with ~30mm of spacer under the stem and another 30mm of pedestal within the aerobar build. The small maxes out at 669 and that's just 4mm away from your number - doable but less room to move in the future if you needed a tweak.
I pretty much have to insist that your Pad Reach (Pad X) of 439 HAS TO BE measured to the rear of the pad. I'm even more certain as I look at your HX at 454 and the pad offset is 15mm - that leads me to believe that your pads were 15mm behind the center of the bar bore (HX). I'm going to proceed with the assumption that your Pad X is really 480 - I'm adding 40mm to get at or near the center of the arm pad. The range on the medium is 467-492 and this puts you in a good place on that range.
For us to be certain it would be great if you called your fitter an asked them one, simple question: "this pad reach number on my fit form, is that to the rear of the pad or the center of the pad?"
I have other comments:
1) "seat height 766 but I think it should be 740". That's a 2.5cm difference. That's huge! It's not like you and the fitter differed over 3-5mm, this a big number in terms of fit. What is the seat height on your road bike?
2) Saddle setback 95mm - what saddle was used in the fit and where were you sitting on it (middle, forward of middle, or off the front). 95mm of set back seems dubious to me, and if we come to learn that your Pad X of 439 is to the center then I'm going to factor that into an opinion about what may have happened during this fit.
3) Don't settle for less than perfect with the Ultimate. Get the cockpit with the shorter stem but with 25mm wide pads I'm thinking a 42 is still a good call in bar width.
Ian Murray http://www.TriathlonTrainingSeries.com
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