Originally Posted by
HillRider
If that bb has damaged 3 cranks, it's probable that the taper that was improperly made to begin with. As I said above, nutted bottom brackets tended to be cheapies so its precision may be suspect.
At this point, I'd certainly cut my losses and buy a complete new crank and matching bottom bracket set and be done with it.
The question being asked relates to this weeks new BB failure on the one which has thus far only had 1 damaged crank Monday. The concern was given the bad history on the earlier similar problem with that style spindle if putting another crank on there would just be a repetition of the earlier history of destroying good cranks if it merritted a single replacement try.