RoadBikeReview.com's Forum Archives - General


Archive Home >> General(1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 )


sizing help & paging "C-40" /Fondriest MDC owners...(6 posts)

sizing help & paging "C-40" /Fondriest MDC owners...reklar
May 14, 2003 1:40 AM
I'm considering buying a Fondriest Madonna di Campiglio and would like to get some general impressions about the ride and advice on sizing. I'm 6'0", 190lbs with a 33.5" inseam. A couple of years ago I had a fit kit done and the top choice it listed for me came in at 56.3cm TT with 105-110mm stem.

However, I have a trek XO-1 cross bike 56cm which feels a bit small for me on the road. It has a 55.5cm tt and I'm running a 130mm stem on it, plus I have a whole lot of seat post exposed....

What size MdC should I get? Are fit kits "wrong" often? Would 1cm of top tube really make that much of a difference?
Fondriestterry b
May 14, 2003 5:36 AM
I'm 5'11" with a 33.75 inseam and I'm riding a new Top Level in size 57cm (same geo as MdC.) Fits me very well. Running a 120 stem and I am using a setback post for position over the BB.

The virtual TT in that size works out to 56.5, so if your Trek is feeling small, that might help. Knowing nothing about your upper body dimensions, I guess and say you'd probably not want a larger MdC - it's another 1cm up.

By the way, I can't say enough about how great Fondriest-USA was to deal with. Easy, courteous, made their commitments. I dealt with Will Atencio - great guy.
analysis...C-40
May 14, 2003 7:37 AM
The size L Fondriest has the same seat tube angle and a 1cm longer top tube, which would reduce the stem length from 130 to 120. The head tube is quite long at 191mm or 7.5 inches, including the headset. I would carefully compare the head tube length of your Trek to the Fondriest to be sure that the HT is not too long to get the bars down to the desired height.

The size M Fondriest frame has same TT length as the Trek, after adjusting for the steeper STA. A 130mm stem should produce a nearly identical fit. The saddle would need to be moved back about 6mm to compensate for the steeper STA. The seat tube is 3.5cm shorter, which would expose more seat post. The HT length with headset is 163mm. Once again, compare with your Trek to figure out the change in steering tube spacers or stem angle that might be required to produce the desired bar height. You might need a flipped stem with a 96 or 100 degree angle to get the bars high enough.
thanks...reklar
May 14, 2003 1:55 PM
I'll measure the trek's head tube when I get home...One problem I have with the trek's fit is that there is so much seat tube exposed that I have to push my saddle all the way forward to get the proper knee position over the pedal. Unfortunately that makes me feel a bit cramped even with the 130mm stem...

Have you gotten your's yet? How does it ride?
more...C-40
May 15, 2003 5:39 AM
The amount of seat post exposed has nothing to do with the fact that you have to push the saddle all the way forward to get the desired KOP. This relationship is affected only by the seat tube angle, not the frame size, since the saddle height does not change with frame size.

Don't be a slave to KOP. If you have been adjusting the saddle to place the knee directly over the pedal, you should also try positions that place the knee further back and see how they work. Move the saddle back about .5cm at a time. Also move the saddle down by about 1/3 the amount that it is moved back.
hmm...reklar
May 16, 2003 2:47 AM
Right you are about the geometry! Thanks!

I'm not sure if KOP works in general, but I seem to have less power with KBP (b=behind)...

Basically I don't think the cross bike fits me all that well.
Maybe I'll post a couple pics tomorrow and see what you think...

Thanks again!