650b conversions, some new bikes, all nonsense

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M_V in reply to @Ph1ll1p

I realised it would be the easiest to sweat in a shell and then cut threads into it.

Wouldn't it be easiest to use a shell with threads already there?

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Ph1ll1p in reply to @M_V

So this is the conclusion I came to, but I want to ensure the threads are co axial, and the internal diameter of the shell is currently the major diameter of the threads, meaning I would have to braze in just threads, which might be impossible. So my current plan is to bore the shell on both sides in the mill, and then either braze or loctite in steel shells, bore then and then cut threads.

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M_V in reply to @Ph1ll1p

I was more thinking, remove current shell and replace. Probably only viable if it’s fillet brazed or lugged though, not so on a welded frame.

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