Outboard motor for lathe threading? Really? Ideas welcome!

[olderdan]

Hi Johan
Interesting idea which could work and the sort of project I like.
I am wondering about the worm wheel in the wiper drive as all the ones I have encountered are made of nylon or similar and not expected to cope with the sort of torque you will place on it. Also despite your concerns I would still consider a toothed belt drive, (ideal for slow speeds) and and would give the option for gearing down to reduce the motor loading also easily slipped on when needed and the mandrel pulley could then stay in place without losing the though bore of the lathe mandrel. That motor assy would also make a great independent drive for leadscrews.
Look forward to your completion.
Regards
Olderdan