What is the smallest front sprocket?

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What is the smallest front sprocket?
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flag MFS420
Posted: Dec 3, 2008 at 8:08 Quote
Lookin for the smallest front sprocket for a bmx three piece crank.
flag ChrisBurgess
Posted: Dec 3, 2008 at 8:22 Quote
you can get some really teeny weeny 21 tooth sprockets but they are quite hard to find
flag MFS420
Posted: Dec 3, 2008 at 8:27 Quote
i know there are twenty tooth out there, i really want one, what size should my other one be, or is it personal preference type deal. will it do damage?
flag danwheat
Posted: Dec 3, 2008 at 11:21 Quote
25 front 12 rear
flag Calum-West
Posted: Dec 3, 2008 at 11:23 Quote
the perfect ratio is 44 to 16
so divide 44 by 16
divide 20 by that number and thats wot u need on the rear
flag milanboez
Posted: Dec 3, 2008 at 11:27 Quote
'the perfect ratio is 44 to 16 '

there is no perfect ratio. for mtb standard is 36 - 16
1 tooth on cassette is about 2/3 equivelant on a chainring
for mtb i good general micro drive gear would be 24 - 10

dono bout bmx
flag woowoo
Posted: Dec 3, 2008 at 11:27 Quote
44 is quite a big sprocket. You can find pretty small ones im sure. but 25 seems pretty reasonable size. that way you have a bit of leverage on your back ratio because i think 12 is the smallest tooth you can use on a normal mountainbike hub.
flag MFS420
Posted: Dec 3, 2008 at 12:14 Quote
milanboez wrote:
'the perfect ratio is 44 to 16 '

there is no perfect ratio. for mtb standard is 36 - 16
1 tooth on cassette is about 2/3 equivelant on a chainring
for mtb i good general micro drive gear would be 24 - 10

dono bout bmx
it is a mountain bike . it just has bmx cranks, primo knock offs.
flag ScitzO
Posted: Dec 3, 2008 at 12:18 Quote
danwheat wrote:
25 front 12 rear

23 front 8 rear is the smallest ive seen
flag MFS420
Posted: Dec 3, 2008 at 12:22 Quote
danwheat wrote:
25 front 12 rear
thats what im running right now.
flag MFS420
Posted: Dec 3, 2008 at 12:22 Quote
i think i might replace the hub. and get a 9 t bmx drive.
flag kingc88
Posted: Dec 3, 2008 at 12:33 Quote
you can get Profile NanoDrive 18 tooth but dont no what would be on the rear hope it heps
flag MFS420
Posted: Dec 3, 2008 at 13:56 Quote
kingc88 wrote:
you can get Profile NanoDrive 18 tooth but dont no what would be on the rear hope it heps
cant you lace a bmx hub to a 26" rim?
flag mush-bag
Posted: Dec 3, 2008 at 14:02 Quote
you can but bmx hubs have 110mm spacing and mtb have 135mm, also you cannot mount a disc on a bmx hub
flag MFS420
Posted: Dec 3, 2008 at 14:11 Quote
the-lunatic wrote:
you can but bmx hubs have 110mm spacing and mtb have 135mm, also you cannot mount a disc on a bmx hub
BRAKELESS REPRESENT! aha.
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