I have a related 93 crank/BB question. I have an early or mid 70's Motobecane Le Champion ($5 at a yard sale). It had what looks to be original Stronglight 93 crank & BB w/ 118 Stronglight axle. Right arm is fine. Left arm looked like it had been overtightened, but 2 other 93 left arms fit the same way.
Sutherland's 1985 3rd ed. lists the 118 mm for the 5 pin (ie #49) & a 120 or 123 for a 5 arm double like the 93. I need to replace the entire BB, thought I would get another Stronglight, but maybe there are other alternatives. What would be best to try a 120 or 123? What about availability? On the high end, Phil Wood lists 119 & 123 mm axles - would either of these work?
Any comments?
I will send an introduction soon.
Thanks,
Mike Self
Raleigh Internationals, RRA, Moultons
> >
> >Does the 93 crank have a standard spindle taper so that the arms would
work
> >with a Shimano or Campy bottom bracket?
>
> I think it is standard enough to work on Campy, Sugino etc. In the old
days
> Shimano had a shallower taper as I recollect.
>
> >
> >Can I use standard crank bolts and washers? I know the extractor is a
> >unique Stronglight size.
>
> Yes, and it is simpler to avoid the 16mm Stronglight bolts as a very thin
> socket is required.
>
> >
> >What length spindle do the arms take?
>
> If you start swapping spindles it depends on where the cranks end up
> seating on the tapers. Based on a Stronglight axle chart, I would say
120mm
> with the right side 4mm longer than the left.
> >
> >Are the chain ring bolts an odd size?
>
> I think run of the mill would work but the "shoulder" is larger for the
> Stronglight.
>
> >
> >Does $45 sound right for the crank arms?
>
> With rings and in nice shape that is OK. It you have to hunt down all the
> rings and hardware I'd look for something more complete.