I just got this in trade from a friend that has no knowledge on these; South Bend lathe medium sized. About 5 feet total. I put up some pics. One shows the chart to make threads. The first row in the chart says to use "Stud Gear 20 or 40" depending on which thread-per-inch. Then use the quick change. Can anyone tell me which gear is the stud gear? Pic of side gears shown. There are 2 gears stacked together at the very bottom where that cleaner nut is; the outer gear is doing nothing and is 40 teeth. A 20 tooth would be just over an inch, so i am lost....and in the spare gears, there is no 20.? My problem is that my friend had 2 South Bends, and the parts were all mixed together. The other lathe does not have quick change like this one, so there were quite a few spare gears. He wants the rest back so he can sell the other one. I'd need to build a table and then mount the remote power/belt unit to the table before I could test-cut some threads to try to figure it out...but I thought someone here must know? Also, it has a taper attachment that I know nothing about.
see the two gears at the bottom? one is in use (the 40 tooth), the other is not being used (the 20 tooth). You just swap these gears, and slide the idler towards the stud gear, to change them.
The stud gear is the outer one one the forward/reverse lever the contacts the next gear lower on the banjo. What is the spindle bore on that lathe? 7/8 or 1-3/8th ? The normal gear on the input to the Q/c is 40 teeth. Just have been working with this putting a Q/C back on a SB light 10.
Look on epay, they sell a DVD with the old movies of "How To Run A Lathe"- great to watch, and easier to learn from as you see it done instead of pictures- although the book is very good. Yours is a little brother to mine, a 16x60, about 8' long overall with the motor underneath and the flat belt coming up through the housing- mine came out of Berkeley Pump (think jet drives). The ones in the movies are slightly smaller than the one I have. I also have a little guy on a bench, IIRC it's 6x24- as it is a Monkey Wards, I thought it was going to be an Atlas like my old 12x36 Craftsman, but the Wards lathes were actually nice Logans In the how-to movies, you'll hear a couple blurbs about supporting our troops- WWII was just getting going when those machines were new
You now need to find the back drive belt assy and motor for the real thing and convert it to a serpentine belt drive instead of the old laced leather belt. Easy to convert did mine years ago. Tig
You just gave me a great idea for my little Rockford Hand Miller, which is like a baby Bridgeport mill, and has an offset motor assembly similar to that, with flat pulleys (and no belt). My little Monkey-Logan would be a candidate, but it has V-belt pulleys on the same type drive setup as yours- it's modern ('53 )
From what I think I see of your motor and drive, that is what I have. I was going to get a leather belt because it comes apart, so I would not have to take a bunch of parts off to use a timing belt. i'll take another look at it in the AM, though.
Looks like you have a good one to work with. I have a SB Heavy 10 and I have really enjoyed it. Like yours it has the taper attachment and that is a great option to have.
I forgot to say that it also has a short piece of the ways, near the headstock, that can be removed for a larger swing. John gave me the name for that feature, but I forgot already
If there was one thing I learned from a tool room machinist I knew it was to keep the shop and tools spotless and I have never failed that lesson. The stuff in the shop gets used a lot, but it is always cleaned after a job. I know lots of folks can't or won't work that way, but I'm not one of them.
Not sure how many sizes they made but the ones in our high school shop looked just like that but bigger... I remember learning to cut tapers and threading fine and coarse. I know it's basic stuff but to actually do it your self when your a kid is still inspireing.
I had one about that size in the school shop I taught in that was well worn but saved our bacon more than once when we made a part with it. I wish I had room for one here at home.
what is something like that in decent shape worth? i'm always "bothering" my friends when i need something turned, and i have room for one now. working on a project at the moment [pivot pin for int. A tractor axle] and i could use it!
Can someone with a Heavy 10 put up a pic of the "link" that goes from the belt tensioner handle near the head, back to the motor drive unit? If I knew what it looks like, I can go back and look through the other parts that were there. Thanks
A good lathe with plenty of tooling is worth quite a bit, if you get really lucky you might find one for $500, but don't be surprised if you have to pay $2000. If you price new stuff, you'll see it can cost a lot more.
I have a late '40z Logan and see that Logan & South Bend have some interchaneable parts, what's the connection?
Practical Machinist website has a classified section. I have a 9" Southbend, 1934 model, first year they made them. I did the serpentine belt too. It didn't look like this when I got it. I saw one of my neighbors, an old man, out in his driveway working on something. I decided to be a good neighbor and offer a hand. walked in the garage for a screwdriver, there's an old 12" Craftsman(Atlas) lathe with power crossfeed. He said he didn't use it any more. Me-"Is it for sale?" He-"Yes." Me-"How much?" He-"Oh, I'd have to get $100 for that." Couldn't get my hand in my pocket fast enough! It pays to be nice to old timers. I brought him a bottle of Scotch the next day, too.
I know there are many great reasons to go to the serpentine belt, but one thing that is nice about the old leather belt system is that it allows for slippage in case you ever put the lathe in a bind of some sort. I still have the leather belt on my Heavy 10 and it has worked perfectly for me. Just my 2 cents.
Look for someone in your area that buys out and resells equipment and shops- the old non- DRO and CNC stuff can go amazingly cheap, as "real" machine shops don't have much interest in them. I got my big South Bend from a guy who buys out complete shops, many time for scrap weight value- he had all the stuff from Berkeley Pump, as they outsourced overseas (their plant was right down the street from where I work in Berkeley)- he had three like this, the other two were pretty well worn out, chewed up ways etc, but this one is in nice shape- look 'em over carefully, find one that's tight. He gave me 3 & 4 jaw chucks, face plate, steadyrest, drill chuck, collet holder, tool holders, and a boxfull of little stuff for $750. I got my little Monkey-Logan at a garage sale with all the goodies and a big wooden cabinet it was mounted on for $250. I had my Atlas/Craftsman for sale for $800, sold it to a car club member for $275 and a clean Harley Baja 100 he'd had in his garage for 15 yrs., needed the room for a place to put the lathe LOL- put the Baja on craigs and sold it for $1500. Also got my Bridgeport for $1500, and it's nice & tight, still has the original electric motor. The little Rockford Hand Miller cost me $250 including the steel cabinet it's mounted on- cute little booger
When I went through the Hornet a while back, saw the "small" machine shop from WWII, and saw the same stuff I have at home
I wish I had a lathe and a Bridgeport and the space for them...... Graduated 1964 from Bergen Tech, Hackensack, NJ machine shop and worked as a machinist and tool maker for a number of years. They had tape controlled machines back then, no CNC back then, yes I'm old............... Enjoy your new toy......................... Now make something..................
The Jalopy Journal
