Generally, TT on mtbs slope more than road bike TT to accommodate steeper seat tube and head tube angles.
You need to be looking at effective top tube length, what the top tube would be if it were horizontal.
Remember mtn bikes do not have to fit to the mm the way a road bike should, at least assuming you're not going to plant your butt on it and ride it like a road bike. You move around so much more and it is such a more dynamic activity that you won't notice the 1 mm differences.
Frends know gud humors when dey is hear it. ~ Da Crockydiles of ZZE.
I was wondering this, thanks! The differences are quite large though perhaps 25-35mm won't matter. When I am ready I will discuss this with my fitter. I won't know until the mountain bike clinic if my hands can handle it or if my skills have progressed enough to take on beginning mountain biking this year. I WANT to, but I don't want to set myself up for failure by taking it on too soon...
Catrin, what's your inseam? I know that I had trouble finding MTBs that I could comfortably standover--but I have short legs, even for my height. You may run into the same thing. I ended up with a Specialized Myka.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher
I don't remember, but I take a 48cm on the LHT and I *think* it is the same for my Gunnar. I really need to confirm with Jonathan what my inseam is... One of the reasons, among others, I had to go with a true custom size with the Gunnar was that I needed more stand-over than their standard sizes. I don't think that means I have long legs
I just looked at the Myka (bad me for doing this at work) and it is a nice bike! I also note a FS version with disc brakes for <2K... I don't know if I would go the FS route, but have been told it wouldn't be unwise given my assorted bits of arthritis.
Last edited by Catrin; 03-15-2011 at 05:56 AM.
I wasn't sure if you were talking about a mile or an inch - though I figured you were not giving me a mile
The small Myka has an actual TT of 509mm, my optimum is 500...that is certainly better than the >530 of the Jamis and Giant smallsThe standover of the Myka small is 674mm while my LHT is 723.8...
Am also going to talk with my fitter, it may be that there are other small choices outside of custom...