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Yet another frame sizing question ...

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Yet another frame sizing question ...

Old 11-22-04, 03:46 PM
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KeatonR
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Yet another frame sizing question ...

I recently committed to a 17.5" Bianchi Denali (won it on ebay, it's on the way), but I'm obsessing a bit about the size and need some suggestions.

Unfortunately, my ideal size would be between the 17.5 and the next size up, the 19.5. I'm 5'11", but with shorter legs (30" pants inseam, 32" actual). My road frame is a 56cm.

I plan to use the bike for long xc rides, nothing too technical. So my question is, if you were between frame sizes, would you default to the smaller or the larger frame?
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Old 11-22-04, 03:48 PM
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Personally Iwould go smaller. You can make adjustments for a small frame to fit well and then make small adjustments just in case you get technical stuff. But large frames are...large. Always will be.
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Old 11-22-04, 03:59 PM
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I read somewhere that you should have 3-4 inches between your croch and your frame going up and down, but this is for hardtails, so make some measurements of the bike and some measurements of your self and see if the bike is the proper size. I'm not sure if your bike is a hardtail.
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Old 11-22-04, 04:20 PM
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I agree with Mael; I'd go smaller. You can usually always adjust with stem, seat post, etc. if you really need to. Too large will always be too large.

Anyone else notice how most people seem to move to smaller frame-sized bikes rather than to larger bikes (assuming it's not just a function of growth) as they get more riding time in? I think it has partially to do with changes in frame design (from more of a traditional cyclocross influence to a BMX influence) but I also think that people making their first move to mtn bikes are used to being stretched out on a road bike and (most significantly) experienced mtn riders learn the advantages of a smaller frame with lots of time in the hills.
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Old 11-22-04, 04:28 PM
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Yeah it is a common progression. Especially with how the spot is flow oriented. No matter how hard a guy on a big bike trys he never looks like he flows down a technical trail like a small bike. Its impossible. My bikes are getting smaller and smaller. My roast almost feels to big to do anything on it anymore. Although my bighit...my tt length is still standard (23 3/4 to 24) BUT the heigh of the bike is tiny
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Old 11-22-04, 04:34 PM
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Wow, thanks for all the quick responses. I really worked myself into a state of confusion over this, and a lot of it has to do with buying online. One thing that threw me off was that my old mountain bike, a Bridgestone MB-0, is a 19", but it turns out that bottom brackets are higher these days, which means shorter seat tube length.

But another point of confusion came when I visited wrenchscience.com. I put in all my numbers, and they recommended 17" center to center (which is about right, considering that the Bianchi is 17.5 center to top), but then that same site showed me a bunch of 19" bikes on the very next page.
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Old 11-22-04, 04:44 PM
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wrench science is good reference. They always tell me to get a 21 to 22" frame...I ride a 15" djer, 17.5 in dh bike and 19" xc bike (which is too big) for me at 6'5
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Old 11-23-04, 12:22 AM
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I'd also recommend a smaller frame over a bigger one when you're right in between sizes.

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Old 11-23-04, 11:10 AM
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I'm feeling much better. Thanks for all the input. And I'll feel even better tomorrow, when it arrives! I'll have to get bundled up for a pre-thanksgiving evaluation ride. I fully expect to be getting a longer stem.

So does anyone go larger when in between frame sizes? Just curious ...
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