Really? I didn't even think that it could have been threaded in place. I'll give it a tryOn the treadmill motors I've encountered, the pulley is LEFT-HAND threaded onto the motor shaft. Of course, yours may be different ... but it might be worth a try.
Very clever system. I've found a source for pulleys, shafts, etc in the UK but by the time I've added up all the parts it's not coming out much less than a new 3 phase motor and a VFD. But maybe I'm over-engineering it! I have some more thinking to do.Here's another simple and very cheap jack shaft I made for my wife's grain mill. Uses cheap flanged bearings and plywood for case and belt guard.
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OK - next stupid question: How do you remove a pulley that's threaded on? Do you have some way to lock the spindle?On the treadmill motors I've encountered, the pulley is LEFT-HAND threaded onto the motor shaft. Of course, yours may be different ... but it might be worth a try.
Impact gun and pliers on the shaft.OK - next stupid question: How do you remove a pulley that's threaded on? Do you have some way to lock the spindle?
Ah, guess I was imagining dirt as a keyway on the old shaft picThe motor shaft is covered entirely by the pulley. Theres no obvious keyway but on closer inspection I do see the beginnings of threads on the motor shaft
Ah, guess I was imagining dirt as a keyway on the old shaft pic
An impact driver (the drill-like thing) is a really low powered version of an impact gun, but it might work too. The trick here is going to be to find some part of the shaft you can hold on to and let the impact driver/gun turn the pulley, otherwise it'll just spin. I'm not sure I see any part of it that'll work there (assuming the big black disc spins as well!).DIRT?? On MY pulley?! How dare you Sir! I'll have you know I run a tight ship at Harrington Harps
OK so, I've spent most of the day wondering in what sort of arrangment you can possibly use a pliers and an impact gun to remove a pulley like this
Is an impact gun the same thing as an impact driver?