Hi,

I am really struggling with one of these frames. One of the rear brake bosses is now useless to me as the bolt has snapped off and as such I need a new boss for it. I am having a hard time figuring out what size thread goes in the frame. It is not a standard M10 and I’m not sure if it is M8. I have tried loads of different ones but had no luck!

Does anybody know what size will fit this??

The thread is 8mm across but i am not sure about the pitch. Is it a bizarre thread specific to this frame??

Any help would be fantastic!!

Thanks.

Being american its probably imperial not metric, maybe 3/8 unc ? You could try asking over on retrobike

Thanks
I will give Retrobike a try as well 🙂

I’ve got a “beast of the east” but i’m in asia and the Beast’t in England , i go to “vintage cannondale” site for any info i need .

Thanks trevron73, after asking on Retrobike as well I think I may have managed to track one down. Just waiting for delivery and fingers crossed!