Join Date: Apr 2005
Location: SW Washington, USA
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Since we're remote observers here, and you didn't give us every bit of information (such as your inseam length), I can only give you my "seat of the pants" estimate (pun intended...)
From the numbers you gave, it seems the 58cm LHT is almost dead-on to mimicking your current setup with the Kona. The difference in TT length wouldn't be noticeable (.4cm); trying to do all the math with headtube angle and stem rise is kind of going overboard. It's just too close. And the standover height being 1.2cm greater than your current bike probably is OK (assuming you don't "bottom out" on your Kona). I'm not sure why you're even looking at the 60cm frame, based on the numbers you gave.
I got a couple LHT frames for my wife and me, and agonized over some of the same issues. On my wife's frame (52cm), for example, the standover height was only a couple cm less than her inseam. I was worried that this was too close. I wrote to Surly with her measurements, and their opinion was -- all things considered -- that the 52cm was probably the best fit. (Note, too, that they said it's tough to do this by email...) In practice, the 52cm frame is perfect for her, and the standover height is perfect.
In my experience, the length of the stem certainly changes your body angles, arm reach, etc. But as far a steering effects, it gets absorbed so quickly into your motor skills that it's not an issue. (Talking about short changes of 5 or 10cm.)
With flat bars, it might take more attention to headtube angle, stem height, and stem length to get the right reach. But since you prefer flats, and you have the Kona for experience, you've probably taken this all into consideration.
Sounds like the 58cm to me. With a 110 stem, assuming the total reach is within a couple cm of your current setup (stem can always be changed later).
Last edited by EmmCeeBee; 02-07-06 at 01:40 PM.