Technical & Reference Section > Tech and Restoration

43 / 44 / 45 T Chain Ring

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Orange777:
That sort of seem right

43 /2.77 = 15.52 and I have a 16 tooth freewheel on at the moment...

rooski:
20 inch race bike = 43/44/45 with a 16t freewheel,good for general riding as well


--- Quote from: Jaypeg on May 06, 2012, 09:33 AM ---Owner of a bike shop I know swears that the best way to work out what chain wheel you need is to divide the number of teeth by 2.77

--- End quote ---

43/16=2.68

monkian:
This might be of use:
http://www.bikeguide.org/guides/drive/gearchart.php

Orange777:
Very helpful advice as usual!! Thanks all...

TwoBobRob:
Standard for freestylers and some racers was always 44:16. A good number of racers I knew would run 45 up front, just because they were fit and strong enough to pull that gearing to flat out and some tracks demanded it. This also goes hand in hand with crank length - longer arms mean greater leverage of course, so you could run a taller gear. Again lots of racers used 180mm cranks whilst the majority of freestylers used (and still do) 175mm.

At the end of the day, if you're going racing you'll soon work out what suits you and the tracks you ride.

By the way, even though it's only one tooth in either direction, 43 feels markedly different to 45.

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