[DaveWM]

I was pondering the idea of rewinding a fly, where only the HV section failed.

Seems the issues would be working with the very fine gauge wire needed to get the number of turns up to the working voltage AND having to deal with insulation to prevent arc over between windings.

IF the lower voltage windings are ok (or even if not an you need to rewind the whole fly) why not just use thick better insulated wire and only step up to about 10kv then use a commercial tripler to get get the HV, no more 3a3 and have access to a focus supply as well.

I did try directly connecting a tripler to the plate of a horz out once on a working set and got 11-13kv (IIRC).

I know some of the older sets (pre CTC-12) have flys with a lot more taps for various purposes.