pacs1969 Posted January 15, 2009 Report Share Posted January 15, 2009 Hello,I see the bottom brackets usually are in 68 or 73mm, but the axles lengths run from 110mm to 128mm in several steps...How to know what axle length i will need, considering it will run on a 26" bike and a 135mm rear axle, and a (i don't know by now) rear cassette/single speed kit???Regards,,Paco Quote Link to comment Share on other sites More sharing options...
forteh Posted January 15, 2009 Report Share Posted January 15, 2009 Hello,I see the bottom brackets usually are in 68 or 73mm, but the axles lengths run from 110mm to 128mm in several steps...How to know what axle length i will need, considering it will run on a 26" bike and a 135mm rear axle, and a (i don't know by now) rear cassette/single speed kit???Regards,,PacoTypically trials bikes use a 68mm BB shell, although there are some exceptions like the vario styx which uses a 100mm shell.Axle length is generally determined by whether or not you are using front freewheel or not. If you have a fixed front sprocket then you can get away with a 122 BB, if you have front freewheel then you need a 127/128 axle. You may be able to get away with a shorter BB with fixed front sprocket. Quote Link to comment Share on other sites More sharing options...
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