Boyd Allen
Active member
Plain headstock bearings too, I believe.
mounting lathe motor on the floor?!
- Thread starter JonathanK
- Start date
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frwillia
Guest
My totally original 9" Model A has a 1/2 hp bushing bearing AC only motor.
I've never seen a universal wound (commutator) AC/DC motor on any lathe, ever.
That said, my 'lil 'ol SB does not have any of the finish problems my Taiwanese Gear Head used to have. I suspect it is because of the relatively long flat belt drive that acts as a low pass torque filter. Mine no longer has the leather belt, I replaced it with a serpentine automotive belt (which works much better) laced together with soft stainless wire and machined part finishes didn't change, but it's ability to take a cut sure got better. The automotive belt is the way to go.
I've never chambered a barrel with the SB, but I might one of these days just to have done it.
Fitch
jGEE
Joe Golden
It looks to me like the very large 12" or so drive wheel could act as a flywheel to dampen vibrations from the elect motor. Then you have a drive shaft, then you get to the actual drive belt to the lathe. Maybe by the time the driving force gets to the head stock the unwanted 60Hz pulses/vibrations are shunted off/removed from the headstock. Fitch- what about that microwave, snacks, lol??........ joe
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frwillia
Guest
And reheathing the coffee that gets cold when I get busy! There is a fridge in the woodshop (next room to the left), but the microwave is in the machine shop. Uh, this is the other side of the machine shop with the lathe I use for barrel work:
This lathe and the mill are 3ph. You can just see the idler motor for the converter sticking out from behind the tool chest. I converted the lathe to 3ph for several reasons, the fact that it cleared up some finish issues was an unexpected bonus. I really wanted it for instant reversing when doing metric threads.
I really need to put in an air manifold with drop lines so I don't have to lug that little compressor around. I use it for blowing chips out if chambers before sticking the clean lubed reamer back in there.
The place is a mess, I really need to get it straightened up.
Fitch