Any Ideas About This Lathe?

The motor is a Doer. I don't think it is original at all. Maybe the driven pulley is not original. It is a single v pulley.
 
It's hard to tell from the picture, but in the bottom picture the driven pulley off the motor (the aluminium pulley at the top) should be a 2 step FLAT pulley. Yes, SB used a V belt to drive a flat pulley, but it actually works quite well and allows the operator to move the belt back & forth for speed changes relatively easily without messing with the belt tension.

Is your pulley not flat? It's hard to see from that picture. I can grab a picture of the one on my 10K which should be the same as yours.
 
DoogieB said:
It's hard to tell from the picture, but in the bottom picture the driven pulley off the motor (the aluminium pulley at the top) should be a 2 step FLAT pulley. Yes, SB used a V belt to drive a flat pulley, but it actually works quite well and allows the operator to move the belt back & forth for speed changes relatively easily without messing with the belt tension.

Is your pulley not flat? It's hard to see from that picture. I can grab a picture of the one on my 10K which should be the same as yours.
Click to expand...

One side is a V and then there is a flat on the outboard half. What you are saying makes sense but I would never have thought about driving a V belt on a flat. I will have to try it out and see what happens.
 
Another question. The gear door guard has a badly loose hinge pin. Someone tried to solder it but it doesn't work right. I have been watching on ebay but the number inside the door is 650NK1. The doors that match that are specified for a 10K lathe. Are they the same? Holding the door closed. it just doesn't seem to be a good fit. I am wondering if at some point it was replaced.

Two doors were listed as for a 9A on ebay but they don't look the same. The hinge pins look a lot lower.
 
Good buy I just got found my first SB Heavy 10 for 600.00. Don't look as good as yours though. Plus all I got was a 3 jaw chuck. Have fun!
 
First post and already a typo! Need to get use to typing. These hands aren't good for that.Flustered
 
PaPa_Jack said:
Another question. The gear door guard has a badly loose hinge pin. Someone tried to solder it but it doesn't work right. I have been watching on ebay but the number inside the door is 650NK1. The doors that match that are specified for a 10K lathe. Are they the same? Holding the door closed. it just doesn't seem to be a good fit. I am wondering if at some point it was replaced.

Two doors were listed as for a 9A on ebay but they don't look the same. The hinge pins look a lot lower.
Click to expand...

First off, that is a beautiful machine. You scored.
You should keep that lathe original. The part for your door (the 650N) is on page 3A part# 2093 (Babbitt for Change Gear Guard Bracket).
View attachment 136551

IMHO just align (square) the hinge pin and fill with hot lead.
I for one would love to see some photos of your progress.
 

Attachments

  • Parts list SB9A UMD lathe 1944 P-344.pdf
    1.8 MB · Views: 4
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