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Frame too small, no biggie?

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Frame too small, no biggie?

Old 07-07-05, 01:26 PM
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sparknote_s
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Frame too small, no biggie?

I must have been doing something wrong when I measured my inseam days ago. I measured it multiple times today and get 33.5 inches (85.1 cm). If the rule of thumb is center-top frame size 67% of inseam, this means I would need a 57cm center-top frame.

Well....my new frame is a 55cm center-top. Would I be correct in assuming this is no big deal? (I've been riding a 54 cm frame for the past year as well, ?whoops?)
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Old 07-07-05, 01:34 PM
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Phantoj
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"It's not small, it's 'compact'...!"
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Old 07-07-05, 01:34 PM
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It is no big deal as long as the rest of the geometry works for you... you'd just have more seat post showing and as long as the post is designed to work that way, no worries. The problem is... is the rest of the bike right? Is the Top-tube the right length? Is your head-tube long enough to put the handlebars at the right height for you without needing an extender (not that there's anything wrong with that )
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Old 07-07-05, 01:41 PM
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Measurements and formulas like that are just a guide. Riding the bike is the only way to know for sure if it fits.

No idea what frame you have, but if it's a compact frame bike it's quite common for the seat tube C-T measurement to be shorter (some manufacturers will size compact bikes by the effective seat tube, essentially how long the seat tube would be if the top tube were horizontal).
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Old 07-07-05, 01:44 PM
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For most people, top tube length is more important to fit than seat tube length.
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Old 07-07-05, 01:47 PM
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sparknote_s
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Well the top tube difference in a 57 compared to 55 is 1.5 cm. And I have a 110 mm stem right now, so I could just get a 130 stem. Right now my top tube is 54 cm, and I think I need to be a little more stretched out.

My top tube will be increasing 1.25 cm, plus I will get a longer stem, so it's plenty fine there. As for bar height, right now I have spacers on a 54 cm so I will reduce the spacer need...it's all good.

Just wanted to make sure there is nothing drastically wrong with a bit too small frame. Too big on the other hand would be far more worse.

Here is my 54cm fit:
http://www.johnaschmidt.com/LeeBikeF...os/photo5.html
My new frame is 1.25 cm longer in top tube. I will be getting a longer stem with that as well.

Last edited by sparknote_s; 07-07-05 at 01:55 PM.
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Old 07-07-05, 06:01 PM
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Hey, how about this, I need a 60cm frame, and my current frame XL has only 46 cm seat tube...
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