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"square" geometry

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"square" geometry

Old 09-23-08, 06:53 PM
  #1  
ironicAZN
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"square" geometry

anybody know of a frame that has very squared off geometry? i fit best on a 50-51 C-T frame but most of the ones i've tried run a bit long (i ride a pake right now and want to upgrade to something), i'm already running a short MTB-type stem (like 50mm reach) and i still feel that something a bit shorter would be better- i've been told the Bareknuckle and BMW Gangster are good bets- anyone confirm/deny/suggest?
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Old 09-23-08, 07:11 PM
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metaljim
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you may be hard pressed to find a square frame that small. most square frames are 53-57cm or thereabouts.

this is all hearsay though.
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Old 09-23-08, 07:30 PM
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bigbris1
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You might want to look into used Keirin frames if that appeals to you. I have found that most are very small & many times square.
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Old 09-24-08, 07:54 AM
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Live Wire 
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Most factory frames that small have longer front centers to avoid toe overlap....I agree that you'll have a better shot at getting a shorter top tube with a track-specific frame.
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Old 09-24-08, 12:49 PM
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modern bikes tend to be longer...design trend change i guess. every 70s/80s/early 90s frame i've ever had in house (dozens) have been square or very close (+/- 1cm). none quite that small though...most in the 52-54cm range.
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Old 09-24-08, 01:18 PM
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Run a 48 or so C-C top frame with around a 50cm top tube. That might help you out since most 50 C-C frames have a 52-53 cm top tube. Might have a slight sloping top tube but shouldn't be too bad. Make up for the difference with your saddle height.
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Old 09-24-08, 08:03 PM
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ironicAZN
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thanks, yeah, toeoverlap isn't a really a concern for me- on long-ish frames i can't get a good "tucked-in" position going
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Old 09-24-08, 08:22 PM
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Raise your bars. I have decent (not enormous) saddle to bar drop on my Spicer, and my top tube and stem are on the short side (52.5 cm TT, 80mm stem). My Trek "cross" bike (road frame built for 27" wheels on which I put 700c wheels with cross tires) has a 55 cm top tube, and it's very comfortable with the bars level with the saddle, even with a 70mm stem. Raising your bars effectively shortens your reach.
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Old 09-24-08, 10:51 PM
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lymbzero
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I have a conversion.... Mid 80's Binanchi Campione D'Italia.
52 ST, 53 TT It's pretty square.. I like it. very little to no toe overlap.
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Old 09-25-08, 09:03 PM
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its not practical to build a small frame with a short top tube. The wheel will run into the down tube. If you notice, most smaller frames have steeper seat tube angles and shallower head tube angles to get as close as possible. But it only helps to a point.

The only real solution is to go to a smaller front wheel. That is what Georgina Terry does on her Womens bikes. But I don't think she makes any track bikes or frames with horizontal drop outs.

If you are a women too (cant tell) this problem is made worse by the fact that women usually have proportionally shorter torsos with respect to their total height, than men do. If you have a lot of money you could get a custom frame...
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