Repairing alloy

[8690q]

I've got an alloy frame with a stripped drive side b\b shell.

Anyone had this and had any success repairing the threads ?

 

[tintin40]

BITD day stripped a thread on a BB. A shop just rethreaded it. took 2 mins
or buy the tools and DIY?

 

[8690q]

This one is past tapping.

I have the technology and have tried tapping it but the tap just slides in :shock: such is the extent of the strippage

I was more thinking along the lines of filling then re tapping new threads into new material.

 

[kaiser]

BETD do a repair on BB's or you can get a threadless bottom bracket. AFAIK though, as I have used neither, the repair is expensive and the BB isn't without problems. Is the frame worth saving or are you just trying to get a bit more life out of it?

 

[kaiser]

Just had a look at the BETD site and its £45 a side.

 

[8690q]

I bumped my head on the frame when looking for a 36 hole Mavic d321 rim.
Had a look while I was rubbing my skull and remembered why it was hanging there. Stripped bottom bracket shell.

TBH it's a 16 inch Diamond Back jump series frame Which is quite beefy and has horizontal dropouts.
In one eye it's worth saving but in the other eye it can hang in the shed for all eternity if it's not repairable.

I've tried a threadless b\b in it and it didn't like big gears too much. It just slipped when you really cranked it.