JonMack Posted December 12, 2008 Report Share Posted December 12, 2008 Yet another BB question!I want an ISIS axle for a project. I wanna know how many are a constant diameter all the way along, rather than shoulderedHere's an example of a shouldered one...This is no use as I need it to be 22mm all the way along. I think the Try-All/Ko/Truvativ Gigapipe are like that as they seem to have an alloy sleeve like this:Which means there will be no shoulder, thus it being a constant diameter, so with a bit of work I would be able to take the axle out, right?Can anyone help me in finding an axle that is 22mm all the way along?Thanks! Quote Link to comment Share on other sites More sharing options...
NVWOCI WVS Posted December 12, 2008 Report Share Posted December 12, 2008 echoaxle+lathe=whatyouwant Quote Link to comment Share on other sites More sharing options...
JonMack Posted December 12, 2008 Author Report Share Posted December 12, 2008 That's the last resort Quote Link to comment Share on other sites More sharing options...
Sam F Posted December 12, 2008 Report Share Posted December 12, 2008 (edited) Hah, i bought that exact BB today off Prawny. Nice to know my BB is being used in other ways than being ridden! Edited December 12, 2008 by Sam F Quote Link to comment Share on other sites More sharing options...
monkeyseemonkeydo Posted December 12, 2008 Report Share Posted December 12, 2008 All ISIS BB's will have to have a shoulder for the bearings to sit against. Only BMX type BB's have constant diameter axles with no shoulders. I think. (Waits for Adam@TB to prove me wrong).The Try-All etc will all have a shoulder on the inside of the bearings- the alloy spacer tube is just to protect the cranks from flaring in the ends of the spline flute I think. Quote Link to comment Share on other sites More sharing options...
NVWOCI WVS Posted December 12, 2008 Report Share Posted December 12, 2008 You want to run isis cranks on your flat land bike? is it spanish bb? Quote Link to comment Share on other sites More sharing options...
JonMack Posted December 12, 2008 Author Report Share Posted December 12, 2008 You want to run isis cranks on your flat land bike? is it spanish bb?Yep. It's mid I think...St Martin Holloflat cranks = generic ISIS trials cranksSt Martin Ecoflat cranks = generic ST trials cranks.Would be easy if it was euro Quote Link to comment Share on other sites More sharing options...
NVWOCI WVS Posted December 12, 2008 Report Share Posted December 12, 2008 This might interest you... A friend of mine is running Primo Hollowbites on ashimano UN52 in a Euro BB frame. He's having no problems and the interface is almost identical. So maybe you could use the axle from some hollowbites (Ti aftermarket version available) in a 22mm mid bb and the sqare taper version of the cranks? Quote Link to comment Share on other sites More sharing options...
JonMack Posted December 13, 2008 Author Report Share Posted December 13, 2008 I think think think that my frame is gonna be euro, if so that makes my life about 100000x easier... this could go awfully well!What's the width like? That's something I'm worried about, as the widest I can go is 128mm and most bmx bb's are about 145mm... Quote Link to comment Share on other sites More sharing options...
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