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Can a mountain bike be used to help fit a road bike?(6 posts)

Can a mountain bike be used to help fit a road bike?zmarke
Oct 28, 2002 1:09 PM
I have a mountain bike that was fitted years ago and is still great...I now ride it mostly on the road with slick tires but want a proper road bike.

I am about to purchase a road bike and want to know how these measurements (MTB) can be used to fit a road bike, if at all. In addition, I had a fit kit done recently for a new road bike but I am not sure the numbers give me a TT that is long enough and the seat tube seems a bit slack.

I am 5'8" but have short legs, short arms, and a long torso.

Current MTB:
Seat Tube angle: 72.5
Head Tube Angle: 71.5
Top Tube: 55.5cm
Stem: 150mm - 5 degree rise

Fit Kit for road bike:
ST: 73
HT: 73
TT: 54cm
Stem 90mm-100mm

Inseam: 77cm (no shoes)
Torso: 64cm
Arm length: 56cm

Any help would be greatly appreciated.
We're very similarDave Hickey
Oct 28, 2002 1:41 PM
my inseam is is 77cm and I'm also 5'8". I'm most comfortable on a 51 ctc with a 53-54cm toptube. My stems vary between 90cm and 100cm. It sounds to me like you are very close. Let me ask you a question. If I wanted a MTN bike, would I start looking at 15-16" frames?
Yes, we arezmarke
Oct 28, 2002 2:03 PM
What road frame do you use?
I have found it very frustrating to find a "production" frame with a TT that is long enough. Everyone has told me to "go custom" but I do not currently have the $ to spend.

As for a MTB., TT are longer. My 16.5" with a 55.5 TT is great. I have just under 3" clearance with a sloping TT.

If you are in the market I could offer my Ti frame and XT parts at a "steal". I just do not use it off-road...really never did. It currently has 26x1.0 Hutchinson slicks on it.

Anyway, contact me off-line if you want and I will be more than happy to give details about the bike or just about how it fits: zmarke@aol.com

thanks.
Yes, we areDave Hickey
Oct 28, 2002 2:32 PM
I'm using a couple of LOOK frames. They both have around 53.5 TT's. In 51cm ctc frames, 53-54cm TT's are quite common. Any longer than 54cmTT and you are getting into customs. What kind of frames have you been looking at?
Steel...zmarke
Oct 28, 2002 2:45 PM
Steel...

Cannot afford Ti.
Aluminum is too harsh in a 51cm ST.
Never ridden carbon but have been told it is stiff.

On a budget so the best steel frames in my price range for a steel/Tiagra or 105 bike I have found are:

$399 (4130)
Surly Pacer 52cmST, 54cmTT, 74STA
http://www.surlybikes.com/

$425 (631)
Soma Smoothie 52cmST, 54.5TT, 73.5STA
http://www.somafab.com/

But nobody on the east coast stocks the Soma and the Surly is too new for anyone to have built one up..at least by me.

$625 (Columbus TSX)
I also found a nice Pinarello at gvhbikes.com with a 52cm ST and a 53.7ST. I am waiting on more details
re: Can a mountain bike be used to help fit a road bike?hoopshot
Oct 29, 2002 11:53 AM
I would see if there is a dealer in your area where you
could test ride a 2002 Bianchi Campione. The 53cm size is
pretty close to your fit kit numbers. (535mm TT, 72HT,
74ST) I bought a new 2001 Campione in August for $750 that
I found on the internet. It is a nice steel frame with
Campy components that are of Tiagra quality. I've seen a
bunch on e-bay (some new, some used) at good prices lately.

In regards to your main question, I'm not sure if your
mtb numbers translate directly. I would try to set up
a longish test ride on a bike that is close to your fit
kit numbers and see how you feel.

--Will