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650 wheels

Old 06-06-19, 04:49 PM
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thehammerdog
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650 wheels

Will smaller wheels mean gearing difference riding compact cranks currently.
i heard that small wheels require larger gearing
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Old 06-08-19, 11:44 AM
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Since the circumference of a 650 wheel is smaller, it would make sense. For the same gear ratio, you would be a bit slower on 650. Not sure this requires changing your chainrings. Unless you are already overspinning your 50x11

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Old 06-09-19, 10:25 AM
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which 650? (A,B, C ) popular now 650 B is a smaller rim but a wider tire ..
650 A is bigger rim skinnier tire.

Sutherlands lists a 650 with a ETRTO bead seat diameter of 597 mm....

what do you have?







....

Last edited by fietsbob; 06-09-19 at 10:35 AM.
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Old 06-10-19, 04:52 PM
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Originally Posted by fietsbob View Post
which 650? (A,B, C ) popular now 650 B is a smaller rim but a wider tire ..
650 A is bigger rim skinnier tire.

Sutherlands lists a 650 with a ETRTO bead seat diameter of 597 mm....

what do you have?







....
C'mon, Bob. This is the triathloon forum, of course he's talking about 650C.
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Old 06-11-19, 11:39 AM
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OK still 650 is the outside.. nominal category ... c 574, not 597...
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Old 06-11-19, 11:41 AM
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swim and run faster and the bike part matters less..
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Old 06-11-19, 12:10 PM
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Use a handy gear calculator to express the various combinations of wheel size, tire size, chain-rings and cogs as Gear Inches for direct comparison.

https://sheldonbrown.com/gear-calc.html
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Old 06-17-19, 07:17 AM
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Originally Posted by fietsbob View Post
swim and run faster and the bike part matters less..
That's what I've been doing wrong...
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