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Peace,
Tim
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Joe Bernard
Vallejo, CA.
If you need a roadish bike that will take wider tires, consider the Road Frame by Black Mountain Cycles. I like mine a great deal
www.blackmountaincycles.com
On Saturday, September 22, 2012 11:20:12 AM UTC-7, Tim wrote:
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But let's say you're between two LHT sizes. Most people want the bars closer, not farther. If you go slightly smaller on the frame size, you can put on a slightly longer stem if needed. If you have a big frame and a short stem, you can't necessarily go shorter. Again, bar height doesn't vary between frame sizes.
Also, the way frames are measured varies between Riv and Surly. A 58 Atlantis is closer to a 56 LHT than it is to a 58 LHT, for example.
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I don't have an encyclopedic knowledge of top-tube lengths, but that info is available on the Internet for anyone to compare. But yes, since bar height doesn't have to be a variable on the LHT, top tube length is the most useful sizing parameter.
Very often people who want to buy a Surly will use Riv's sizing scheme. But like someone above said, the Surly 58 cm is more like a 60-61 cm if you measure center bb to top of the seat tube. And the top tube in most sizes of LHT or Cross-check is very close to nominal frame size (i.e. 58 c-c on a 58 frame). I have no idea if this makes the frame more suitable for drop bars or for porteur bars, but for most people who go with Riv's PBH-based sizing guideline and drop bars, it results in a stem that's sub-90mm (short) and tightish stand over. Twice I've had LHT customers who couldn't let go of the Riv size recommendation despite my having explained this ad nauseum...and then a week after the purchase ask to do a frame swap for a smaller size. The customer is always right!
Pete in CT
The Surly LHT is certainly a capable machine, no question there. HOWEVER ... and this is a big HOWEVER ... they have the same problem as virtually every other mass-production model. The geometry changes with size range ... far too much, in my opinion. The 46cm frame has a 74.5 degree seat tube angle! That's insane for a touring bike that's supposed to be comfortable. In contrast, the 48cm Riv Hunqapillar has a 71.5 degree seat tube angle ... which only changes to 72 degrees in larger frames, maintaining a more consistent geometry for all sizes. Of course, this really only affects smaller Surly frames ... regular-sized folks don't really have to worry, but for us small dudes, it's quite frustrating ... but yet another reason to appreciate Riv design. I happen to have one of each ( a 46cm LHT and a 48cm Hunq), and there is an enormous difference in how they feel. I don't ride the LHT much these days ... anyone need a smaller touring bike?