Never tried one but there's something called helicoil. It works by drilling out the damaged thread and then the insert is screwed in.You can buy kits on eBay and some bike shops stock them.
No idea what it costs so need to balance the cost against new/2nd hand cranks.
Never tried one but there's something called helicoil. It works by drilling out the damaged thread and then the insert is screwed in.You can buy kits on eBay and some bike shops stock them.
No idea what it costs so need to balance the cost against new/2nd hand cranks.
Good luck