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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  what length cranks
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Author Topic: what length cranks  (Read 519 times)

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therock

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what length cranks
« on: December 14, 2008, 01:55 PM »
what length cranks should i fit to a 18" bike . any idea s

Offline MartyC

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Re: what length cranks
« Reply #1 on: December 14, 2008, 02:10 PM »
165mm or 170mm at a guess. 155mm would strike me as too short but I don't really know so why I'm posting I don't know  ;D.


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mr.magoo

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Re: what length cranks
« Reply #2 on: December 14, 2008, 02:36 PM »
more depends on how old the rider, and how long their legs are, and if for an adult, how much ground clearance you want.

155 is good for a pit bike, or my lad is eight, and i've put 155's on his 20", so if 18" is for a youngster probs 155 or 160

hope that helps a little?

Offline Gary72

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Re: what length cranks
« Reply #3 on: December 14, 2008, 07:57 PM »
have 140's on a 16 inch, have started looking at 18 inch bikes, some have 140's and some 150/155.

therock

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Re: what length cranks
« Reply #4 on: December 15, 2008, 04:33 PM »
mmmmmmmmmmmmmm cheers for that guys . now who has some for sale

RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  what length cranks
 

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