My deal : I have a saweeet 2005 paragon frame I'm trying to build up, and I'm dead-set on using the silly TA 185mm cranks I have for it. After long searching, finally Dave Blum from these forums was so cool to just sent me his, gratis! (and that's a Dutch word), thanks Dave! He also inclused a Phil Wood 125mm without telling me, which will sure work well on another, similar project.
Now the problem : the Paragon is obviously made for modern wide chainlines and 22/32/44 chainrings, understandably.
34t middle ring, with the 127.5mm BB, is already too much. Cranks close to the chainstays BTW. So I put a spacer under the driveside BB cup, and that helps. I might get away with a thinner spacer too, but anyway the left side crank is really close to the chainstay, and might even hit it under power.
I'm really dead-set on using this BB and crank combo, so please be nice to me.
Question : can I warp or fold something around the non-driveside BB spindle taper so the crank doesn't slide onto it aaaaalllll the way? The taper is quite shallow obviously, so even the slightest (o,1mm?) thickening of the spindle would give me a very welcome mm of extra clearance, or more. I *think* I've seen people using some sort of copper tape in similar applications, but am not sure. I could also craft something from a coke can, like 2 thin strips with a bolthole or something.
I KNOW it's not an a-status setup, but what can you think of to make this work just a little better?
I already have a 34t middle ring, 33/44t would be ideal (but costly) so I could cannibalize a 42t outer from a cross bike. The 26t granny I planned to use looks like too much to ask for, but a 24t may alrady be on it's way from I friend I had an outstanding favor with.
Unfortunately I'm building this bike, which will be a disc(disc-only, duh) hardtail for general use, rough XC and marathon), on a negative budget, making it a slow process. Else I'd have just gotten a $300 custom 195-200mm crankset for it, with more practical BB compatibility. Someday...
Thanks for you insights!