jono_misfits Posted June 3, 2008 Report Share Posted June 3, 2008 does anybody know what size bb i need for the diamondback kabuki? i measured it and it was 100mm (4 inches), ive got a pair of middleburn cranks which needs a square taper axle. HELP PLEASE!!!!!!!! thanks Quote Link to comment Share on other sites More sharing options...
forteh Posted June 3, 2008 Report Share Posted June 3, 2008 does anybody know what size bb i need for the diamondback kabuki? i measured it and it was 100mm (4 inches), ive got a pair of middleburn cranks which needs a square taper axle. HELP PLEASE!!!!!!!! thanks The BB shell on the frame will be either 68mm or 73mm long and the axle will probably be 118mm or 127mm. A new one from CRC is only 15 quid http://www.chainreactioncycles.com/Models.aspx?ModelID=17473 Quote Link to comment Share on other sites More sharing options...
jono_misfits Posted June 3, 2008 Author Report Share Posted June 3, 2008 The BB shell on the frame will be either 68mm or 73mm long and the axle will probably be 118mm or 127mm. A new one from CRC is only 15 quid http://www.chainreactioncycles.com/Models.aspx?ModelID=17473 thanks, it just looks really wide looking at the bb, but the bb its got in now is an isis should that make a difference? Quote Link to comment Share on other sites More sharing options...
forteh Posted June 3, 2008 Report Share Posted June 3, 2008 The shell length is dependant on the frame, I would guess that the axle lengths are comparable between square taper and isis. Measure your old axle and get a square taper the same. If youre not sure about clearance then its better to go for a longer BB axle to save the chainring/bash/cranks hitting the the chainstay yoke. Theoretically the longer axle is weaker because theres more unsupported axle sticking out of the bearings but it shouldnt really be an issue Quote Link to comment Share on other sites More sharing options...
jono_misfits Posted June 3, 2008 Author Report Share Posted June 3, 2008 The shell length is dependant on the frame, I would guess that the axle lengths are comparable between square taper and isis. Measure your old axle and get a square taper the same. If youre not sure about clearance then its better to go for a longer BB axle to save the chainring/bash/cranks hitting the the chainstay yoke. Theoretically the longer axle is weaker because theres more unsupported axle sticking out of the bearings but it shouldnt really be an issue thats what i meant its 100mm (4 inches) wide on the frame not the acutual bb, there is loads of clerance, that really doesnt bother me. it looks like a 73mm wouldnt fit Quote Link to comment Share on other sites More sharing options...
forteh Posted June 3, 2008 Report Share Posted June 3, 2008 thats what i meant its 100mm (4 inches) wide on the frame not the acutual bb, there is loads of clerance, that really doesnt bother me. it looks like a 73mm wouldnt fit Summat not right then Quote Link to comment Share on other sites More sharing options...
Luke Rainbird Posted June 3, 2008 Report Share Posted June 3, 2008 Best bet would be to get in touch with the place you bought it/somewhere that stocks them, and see if either they have something you can buy, or can give you the spec of what you need. Some 100mm BB shells are about there, and it's a bit silly since 95% of frames (withing trials at least) are either a 68 or 73mm shell FSA do an ISIS BB in 100mm shell as seen here, so chances are there'll be a square taper one not too far away Quote Link to comment Share on other sites More sharing options...
jono_misfits Posted June 3, 2008 Author Report Share Posted June 3, 2008 Summat not right then thanks for your help, ill try a 73mm Quote Link to comment Share on other sites More sharing options...
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