New Guy Here, This Is My Sb Lathe

[LucknowKen]

Well that lathe sure cleaned up nice. The follower looks unused.
Very, very nice. You are a lucky fellow.
The broken tooth on the back gears can be repaired, but it will probably work well enough as is.
The other members know more than i do by a mile, but it should be repairable by brazing and filing.
Perhaps someone tried to engage the back gear while the spindle was turning.
Cool pictures of a great machine. Thanks for sharing.
Lken

 

[martik777]

Drill and tap the base of that broken tooth for 3 10-32 screws, loctite them in and file to the tooth profile. I repaired 7 broken teeth that way and they have been good for years.

 

[pythonwill]

Drill and tap the base of that broken tooth for 3 10-32 screws, loctite them in and file to the tooth profile. I repaired 7 broken teeth that way and they have been good for years.

im going to just leave it for now, I will replace it when I have a little more $$ to spend.


I just bought a rebuild kit with all the felt and gaskets off ebay. then I will start going through things a little deeper. hope it looks as good on the inside as it does on the outside.

 

[pythonwill]

so after tearing down my machine i have found that the counter shaft is toast. there was no felt in the slots and the end by the pulley is really torn up. any suggestions?
I was thinking on trying to bore it out and make a new shaft for it but I don't know
the pic doesn't really show how bad it is



other then that its looking good


Before


After

 

[LucknowKen]

Hey PW: the lathe is looking good. The counter shaft, not so much.
Unfortunately you need it to work one more time to make a new shaft.
How are the journals on the casting? I just had this same issue. I was surprised that there were no bushings in the counter shaft casting and that the shaft was already stepped smaller for the big pulley. In the end, i sweat a bushing onto the counter shaft and turned it down to the very slightly worn journal dimension. Also i could not find the recommended (real wool) felt material up here so i had to improvise on that as well. Not the best fix from what i have read, but mine now runs smooth and quiet. I have also just recently had my QCGB off for inspection.
On another note, did you find any bad teeth in the QCGB?

 

[pythonwill]

The casting is pretty bad too, i was thinking about boring it out and making a bushing or maybe just buying a new one on Ebay,but don't really have the money at this time.
All the gears in the QCGB were in great shape, just very dirty, lots of brass shavings all thru this machine. that's what my dad mostly did with it.
I just got done replacing all the felt in the whole machine.

 

[LucknowKen]

Afaik boring the casting for a new bushing and a new shaft is the preferred fix.
The casting for my lathe was worn as well. I could not have it reamed so i turned the shaft bushing to suit. Again not a perfect fix but darn close.

 

[Surprman]

Will,

Nice job with the lathe (they are great machines). While the first priority is your countershaft, I noticed that you replaced the carriage hold-down bolt with a hex head. While that fix is functional, you will eventually want to buy (or make) a bolt with a square head like the original. You will realize why when you have to try to keep track of multiple wrenches during jobs. (I had an Allen head on my micrometer stop and it was a huge hassle until I made a new one to work with the standard SB box head wrench.) I can only imagine it will be worse with the carriage hold-down bolt since I use that all the time. Keeping track of that one single wrench is hard enough!

Have fun!
Rick

 

[pythonwill]

Will,

Nice job with the lathe (they are great machines). While the first priority is your countershaft, I noticed that you replaced the carriage hold-down bolt with a hex head. While that fix is functional, you will eventually want to buy (or make) a bolt with a square head like the original. You will realize why when you have to try to keep track of multiple wrenches during jobs. (I had an Allen head on my micrometer stop and it was a huge hassle until I made a new one to work with the standard SB box head wrench.) I can only imagine it will be worse with the carriage hold-down bolt since I use that all the time. Keeping track of that one single wrench is hard enough!

Have fun!
Rick

Yes Rick, I agree. I am looking for a couple of those bolts, my follower also needs them. I used the broken one on one side but the other is a hex head too. They aren't easy to find

 

[pythonwill]

Well i must have done a good job on the lathe, I had my dad over yesterday and he got his first look at it since the work was done to it. well he got quite and when he turned around he was all puddled up and said "It looks like its brand new" I knew he loved it but I guess I didn't know just how much it meant to him. I am now beginning to see just how fortunate I am to have him for my father.
It turns out he has been using this machine for longer then I knew. He bought it from his employer Tri Met, (Our local public transit) about 30 years ago. Before that he used it at work for about ten years before he bought it, I guess its one of them family to him. I just wish I had a son to pass it on too when im done with it.