Originally Posted by
melloveloyellow
If it is a square taper BB, then the drive side crank can move inward depending on the torque applied. Just a guess..
The crankarm has not been removed or re-torqued since I built it up, at which point there was no rubbing.
Are your chainring bolts tight?
Can you get a smaller chainring?
Perhaps just remove the triple and block the derailleur out.
Chainring bolts are tight.
It's actually the bolt heads from the small ring that are rubbing on the BB lug, so a smaller chainring wouldn't help.
I assume you mean just remove the small ring. I could do that, but I would just as soon leave it in case I take the bike somewhere I need a bailout gear.