Metric Transposing Gears

I have a full set of shop made gears for metric threading on SB9A using the 37/47 transposing gear, they are made from aluminum but work well. I no longer have the SB9A, when I sold it the buyer was in a rush and I just plumb forgot about the gears and have no way of contacting him now.
If anyone has any interest in them let me know.
 
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I have a full set of shop made gears for metric threading on SB9A using the 37/47 transposing gear, they are made from aluminum but work well. I no longer have the SB9A, when I sold it the buyer was in a rush and I just plumb forgot about the gears and have no way of contacting him now.
If anyone has any interest in them let me know.

Are the gears still available?
 
I don't believe this works on a QCGB lathe, but for the SB 9 "B" you can cut metric threads without buying expensive gears.
Transposing gear is made from two existing change gears. A 44 tooth and a 56 tooth gear. I bought two spare gears off eBay so l dont have to take them apart.
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You can see the transposing gear made by bolting the two gears together. I have used this several times and it works great. There is a very small error but you would have to thread two or three feet of threads before the error would cause a problem. There is a chart on what gears to use for the various threads. All this is on the internet somewhere but I can't remember the site. It can be found by searching "cut metric threads on a SB 9 lathe".
 
I don't believe this works on a QCGB lathe, but for the SB 9 "B" you can cut metric threads without buying expensive gears.
Transposing gear is made from two existing change gears. A 44 tooth and a 56 tooth gear. I bought two spare gears off eBay so l dont have to take them apart.
You can see the transposing gear made by bolting the two gears together. I have used this several times and it works great. There is a very small error but you would have to thread two or three feet of threads before the error would cause a problem. There is a chart on what gears to use for the various threads. All this is on the internet somewhere but I can't remember the site. It can be found by searching "cut metric threads on a SB 9 lathe".
Great stuff Mark, thanks for posting! :)
 
Here are the files for metric threading on a South Bend 9 "B" or "C" lathe.
 

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Thanks Mark! I assume that the SB 9 B&C lathes use a lead screw with 8 TPI? If that is correct, your instructions would also work on a Logan 200 and a few other machines.
 
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