my name is Arne and IÂ´m from Berlin/Germany.
I have a bike-fitting/size problem that may be also of general interest, so I post it here on the Forum.
I'm currantly riding a road-bike with clip-ons but looking forward to buying my first tri-bike early 2021.
On the Canyon Website (by numbers) I am exacly between size S and M for the new Speedmax Disc.
I have consulted two Bike-fitters.
The first one put my saddle on my road bike about 4cm backward to solve my knee issues and recommends size M for the new Canyon: Hight-relations on size S would be too agressive for me, he said.
The Second one did just a "loose fit"; It was not a real bike-fit but a session to try out bikes from different bike-manufacturers. He just made it work for me to take a short test ride round the block. But: all Bikes (Cervelo, Argon18, Felt, Giant) were Size S or 51. He said S is clearly in general the right size for me.
So what do you think?
I am 175cm high with an inseam of 85cm. 51 yrs old. Long limbs, short Torso. With short upper Arms...
Saddle hight from center of BB to top of Saddle is: 74,2cm
Armpad-stack is 650mm
Armpad-Reach is 455mm (side twds. rider), 460 (middle of pad).
Let's say for a second that all the numbers you offer are perfect: Seat Height 742, Pad Y 650, Pad X 455.
If you wanted the new CFR or CFR SLX (disc brake bike) you have 2 choices:
1) the medium, with the short stem that comes stock, the medium extension that comes stock, and the mid spacer that comes pre-installed on the bike. The only hesitation is that the seat post would be down in the frame a bit and you wouldn't have access to the built in water bottle boss. This is never a big deal, if you want bottles behind your seat then use a mount from the rails.
2) the small, with the long stem, medium extensions, and mid spacer. You'll get the post bosses on this....but, I have a concern*
If you wanted the new CF with disc brakes you can do it with...the medium, the 80mm stem that comes standard, the standard spacer - same issue with the bottle boss down in the frame
*Here's my concern - you haven't had a bike fit yet. You describe taking your road bike to fitter who moved the seat backward 40mm. STOP RIGHT THERE... If we're trying to determine your tri position the seat would have to go forward perhaps 50mm. Because your hips are in the wrong spot we can't rely on that Pad Y/Pad X. The other experience where you rode around on some tri bikes - I'm sorry, that's not a fit.
Based on your body (your height, your limb/torso lengths, etc). I would put your Pad Y around 630 (not 650) and your Pad X out at 465 or beyond (not 455). To that end small becomes a problem because it maxes out at 460.
The Medium is your bike, no question. There are some musts here... you must ride a tri saddle, on the nose of it where you have to be to make all this work. And that spot has to be comfortable, if you're not get a saddle will give you comfort on the front.
Get back to me here if you have more questions.
Ian Murray http://www.TriathlonTrainingSeries.com
I like the pursuit of mastery
Twitter - @TriCoachIan