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Chainset/BB for on one double fixed hub

biancobianco Posts: 78
edited July 2007 in Road general
On the on one site it states
Chainline is 50mm

Now does this mean I'll need a 50mm bottom bracket, please help.

If you could provide a link to a product that matches it would be great.


  • Monty DogMonty Dog Posts: 20,614
    No, sadly the BB you require is not such a simple assumption - it also depends on what crank you're fitting too. Standard track chainline is 42mm - so a track chainset and BB will be too narrow, whereas a road double chainset is 46mm for the outside ring - so probably your best bet, maybe an older style chainset with square taper BB and putting a spacer behind the fixed cup will suffice. Suggest you get yourself a suitable chainset and start experimenting.
    Make mine an Italian, with Campagnolo on the side..
  • belgiangothbelgiangoth Posts: 2,849
    I "solved" this issue when building my pomp by taking the bike in to the LBS and asking them to fit the proper BB to get the chainline right.
  • biancobianco Posts: 78
    sounds like this is going to be the plan.

    thanks for the advice guys but I think plain old common sense (what you've offered) should have resolved this query. I now feel stupid
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