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Old 01-12-05, 10:55 AM   #1
james Haury
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60 tooth Chainring

In case anyone is modifying a bicycle loose screws bicycle small parts has chainrings up to 60t IN 110 MM BOLT CIRCLE DIAMETER. This is useful if you are try ing to get a higher gear especially on a small wheel bicycle.
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Old 01-12-05, 11:15 AM   #2
HereNT
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60x11 all the way anyone?
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Old 01-12-05, 11:24 AM   #3
Applehead57
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How useful! After walking my bike up the hill, I could come down really, really fast.
But really, how many of us can push a 60 tooth gear?
I think you'd just be compensating for a lack of private part mass.
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Old 01-12-05, 11:29 AM   #4
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TA of France used to make a 72-tooth chainring.
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Old 01-12-05, 11:35 AM   #5
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Quote:
Originally Posted by HereNT
60x11 all the way anyone?

Kicking your ass all the way! Although, I think he has changed his tag line since.
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Old 01-12-05, 01:25 PM   #6
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Quote:
Originally Posted by Applehead57
How useful! After walking my bike up the hill, I could come down really, really fast.
But really, how many of us can push a 60 tooth gear?
I think you'd just be compensating for a lack of private part mass.
As the OP wrote, it's useful for small wheels. On a 20" drive wheel, a 60/11 is only 107 gear inches, lower than what's on most road bikes these days. I have a 58T on my bike, with a 26" drive wheel, and consider it just about right.
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Old 01-12-05, 02:29 PM   #7
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High gear is 62-11 on my 'bent. You need a big ratio to spin those little 20" wheels!
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Old 01-12-05, 05:19 PM   #8
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I've got a 60 tooth ring for a 650c rear wheel 60/11 on a lowracer isn't too uncommon.
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Old 12-17-05, 01:50 PM   #9
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Resurrecting an old thread...

From Sheldons site: "If you have 406 mm (20") wheels, you would need to install a 69 tooth chainring to be equivalent to a 52 tooth with common 622mm wheels."

FWIW, if you want to make your own chainrings, there's a template available on iHPVA's site that involves only using a drill press.

Here: http://www.ihpva.org/Builders/Sprocket/

Sizes up to (heavens-to-Murgatroid) 92-teeth from those templates.
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Old 12-17-05, 04:03 PM   #10
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My RANS vivo has a 61 tooth front, beat you by one. It's a 20-inch recumbent.
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Old 12-17-05, 04:06 PM   #11
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I only wish I had a 60T.

My challenge is finding large steel rings (56T would be nice) to fit a 110-BCD triple or finding a 130/74BCD triple crankset that doesn't use splined bottom-bracket spindles. (no luck yet...used market perhaps?)
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Old 12-18-05, 05:23 AM   #12
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Why steel rings? Al is superior in every way for large rings.
You can get custom rings made in the UK in any size/BCD from highpath engineering.
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Old 12-18-05, 05:52 AM   #13
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Hmmm... wait... how about 60-9 all the way! (shimanos 9 tooth rear!)
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