Just ordered canyon ultimate slx 8.0 disc

OneBadMofoer

Hi Guys , I just ordered the canyon ultimate slx 8.0 disc in size S https://www.canyon.com/en/road/ultimate ... c-8-0.html . My height is 175cm, inseam 78cm ( very short legs)
. My saddle height on my current bike is 71.5cm. Will I have enough saddle to bar drop height if I use size S ? or should I just get it in XS? thx before

sloppyschleckonds

OneBadMofoer wrote:

Will I have enough saddle to bar drop height

Maybe

birdie23

You're only 2.5cm above the minimum saddle height Canyon list. You haven't said what your preferred drop is but unless it's not much more than a few cms I'd say the XS is better.

sandyballs

So here goes with the maths.

Vertical seat height at minimum specified insertion of 690mm would be: 671.2mm (schoolboy trig)

Stack height (assumed this is minus ihead height): 546mm add 16mm (ihead height) and spacers supplied of 27.5mm = supplied headset height of 589.5mm.

An average stem height of 41mm (Zipp SL) would give a total stem height of: 630.5mm

671.2 - 630.5 = 40.7mm drop (with all supplied spacers)

Max drop therefore = 68.2mm (slammed stem)

Give or take an inch.

As you can tell I am bored this morning, please feel free to check the maths.

birdie23

Sandyballs wrote:

So here goes with the maths.

Vertical seat height at minimum specified insertion of 690mm would be: 671.2mm (schoolboy trig)

Stack height (assumed this is minus ihead height): 546mm add 16mm (ihead height) and spacers supplied of 27.5mm = supplied headset height of 589.5mm.

An average stem height of 41mm (Zipp SL) would give a total stem height of: 630.5mm

671.2 - 630.5 = 40.7mm drop (with all supplied spacers)

Max drop therefore = 68.2mm (slammed stem)

Give or take an inch.

As you can tell I am bored this morning, please feel free to check the maths.

I think your schoolboy trig may be wrong. Going from the geometry chart, with 690mm as the saddle height and the seatpost angle of 73.5° the vertical height from the bb of the saddle is 661.6mm. Max drop would then be 58.6mm.

sandyballs

I used the fact you have 2 sides of the triangle, c minus j. So vertical will be the root of 690 squared minus 158 squared. The error was in assuming c was measured at the min saddle height of 690mm.

All academic if a small is already ordered though.

gsk82

You're 5'10" and you think a small may be too big? How big do you think people are who use the xl?

ryan_w-2

I'm 6ft and have a saddle to BB of 765mm. Medium Aeroad fitted me a treat.

birdie23

Sandyballs wrote:

I used the fact you have 2 sides of the triangle, c minus j. So vertical will be the root of 690 squared minus 158 squared. The error was in assuming c was measured at the min saddle height of 690mm.

All academic if a small is already ordered though.

I didn't even think about that way tbh.

Either way, should be enough drop unless he has a pro position.