Singlespeed bottom bracket question...

mcj78
mcj78 Posts: 634
edited March 2012 in Workshop
Hi all,

I've recently picked up a nice lugged steel frame to build up as a SS cheap knock-about bike (well that was the intention...) anyhoo - i'm using an old bontrager road crankset which was on my commuting bike on a 72 x 110.5mm IS bottom bracket, however the new frame has a 70mm Italian BB - is it just a matter of getting an Italian 110.5mm (ish) BB or am I missing anything else? The rear spacing is 130mm so i'm using spacers on a standard freewheel, so should be able to jig the spacers around to get the chainline right.

Cheers,
J
Moda Issimo
Genesis Volare 853
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Comments

  • ugo.santalucia
    ugo.santalucia Posts: 28,255
    Yes, make sure the bb matches the splines of your cranks...or tapers
    left the forum March 2023
  • mcj78
    mcj78 Posts: 634
    Cool, was hoping there wouldn't be any underlying issues i'd overlooked - not sure if the frame was originally 130mm or if it's been re-set from 126mm but the standard wheel sits perfectly straight in the dropouts & the crank is a modern road double so has std square taper axle fit - looks like a std Italian square taper BB should go right in (famous last words) :)

    J
    Moda Issimo
    Genesis Volare 853
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