My new 1943 South Bend 9c lathe

Ryan313

Tractorologist
Senior Member
Member
I think that I’d I had set up with a big oil bath like that, I’d get more aggravated over dropped tools than anything.

I’ve been making some more progress, the headstock is assembled, and the carriage is coming along. All I have left now is the tail stock, and carriage apron.

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This, is the part I am most excited about! The change gear chart goes on the gear cover facing the wall; previously, I was removing the cover to read the chart. I thought about just writing down all of the ratios, but thought that maybe the plate could be scanned. I made a quick trip to the local copy office, and asked what they could do. In 5 minutes I was walking out with 2 posters and couldn’t be happier with them.

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chieffan

Tractorologist
Senior Member
Member
I eliminated all the changin of gears, ratiosd, etc. on mine. Put a variable speed treadmill motor and controls on. Jut turn the knob to the speed I want and it is there. Plenty of power also with a 3 hp DC motor.
 

SupplySergeant

Tractorologist
Senior Member
Member
Would have to put the gears back in to drive the screw but doubt I will ever cut any threads. Have a couple good sets of taps and die for that.
This is a good point. I run a machine shop daily, and honestly only single-point threads on the lathe about three or four times a year. It does depend on the type of work you do, though.
 

chieffan

Tractorologist
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Member
One issue you may run into with a treadmill motor is the motor shaft. It may be tapered and you will have to taper a V type belt pulley to fit it. I did mine as it had a wide flat drive belt. Not that difficult but takes some time.
 

chieffan

Tractorologist
Senior Member
Member
Thought of that but decided to taper the pulley. I have some inletting black that is used on the shaft to show me where the high places were in the pulley bore. Once I got ther pulley on and the set screw tight it never moved.
 

Ryan313

Tractorologist
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What do you guys think of a low speed high torque drill for the feed? Not enough torque? Not enough rpm range?

I managed to get everything painted, put together, and the chuck mounted. The chuck is an 8 inch, I don’t think I need one that big, maybe I should have got a 6 inch. If I start having issues for whatever reason, I’ll have to order a 6 to replace it. Maybe I will order a 3 jaw 6 anyway.
 

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SupplySergeant

Tractorologist
Senior Member
Member
What do you guys think of a low speed high torque drill for the feed? Not enough torque? Not enough rpm range?

It will work for most cutting this lathe is capable of, obviously not for threading.

I managed to get everything painted, put together, and the chuck mounted. The chuck is an 8 inch, I don’t think I need one that big, maybe I should have got a 6 inch. If I start having issues for whatever reason, I’ll have to order a 6 to replace it. Maybe I will order a 3 jaw 6 anyway.
I'd suggest the smaller chuck if you can afford it. You won't be able to run 8" pieces even if the jaws don't hit the ways, not enough rigidity in the headstock for anything that big. 6" is bigger than most of what you'll do, anyway. A good three jaw is accurate enough for most repair and modification work.
 

secondtry

Tractorologist
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I have heard of people using an electric screw driver to run the lead screw or the cross feed of a small lathe. Should work good if every thing is properly adjusted. A 6" four jaw chuck is much more versatile than a three jaw. You can hold odd shapes and move the center to where you need it. A 3 jaw is designed for speed in a production shop. A 4 jaw will do every thing a 3 jaw will with better accuracy. It just takes a little more skill and time. With repeated use the skill should come. Just make sure you get one with either reversible jaws or both inside and outside jaws. Don
 

chieffan

Tractorologist
Senior Member
Member
I got a 3 jaw with reversible jaws for mine and haven't found anything I needed a bigger chuck for. My lead screw has a small wheel that PO put a handle on for manual feed. I like it real well as the speed is adjustable with quick response if needed. I don't think I would like a drill on the lead screw.
 
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