PM-1340 GT Threading

[V35B]

I have been thinking of getting a PM 1340 GT and retire the Hendey. It appears Matt sells a good machine, and takes care of his customers. My question is, it does not appear to have the capability to cut 11 1/2 threads, which I use on some pipe connections and tubing threads. Is there any change gears that anyone knows of that will make this possible?

 

[mksj]

No, it is the one thread it will not cut. It will cut just about every other imperial and metric thread. The 1440GT will cut a 11.5 TPI. The GT series are a very nice lathes.

 

[BtoVin83]

If you could get a 46 tooth gear you might be able to pull it off, check the math

 

[davidpbest]

Looks to me like
40 127
120 46
At Norton box positions B8 would get you to: 11.503

That 46 tooth gear does not come with the 1340, but might be able to special order it.

 

[BtoVin83]

46/127/40 should give you a ratio of 1.1 5 and using the 10 TPI should be 11.5

 

[davidpbest]

Ii think we're saying the same thing.

 

[mksj]

Anything is possible, but you would need to cut your own gear. I already did the thread chart for the available gears.

 

[davidpbest]

Mark has the master formula on this. Listen to him. He can make a 46t gear as part of his VFD build. I can make your oil distribution plate for the 1340 gearbox, and sell you the last MachTach kit I have on arbitrage, and Ariel can build your stand. I know a guy who does chrome plating in his garage for the custom Lista cab you will need for Ariel’s stand. You’re covered dude.

 

[V35B]

Thanks for the replies. I thought it was probably a possibility. Now I have some things to think through before making the decision to go with this unit.

 

[7milesup]

Mark has the master formula on this. Listen to him. He can make a 46t gear as part of his VFD build. I can make your oil distribution plate for the 1340 gearbox, and sell you the last MachTach kit I have on arbitrage, and Ariel can build your stand. I know a guy who does chrome plating in his garage for the custom Lista cab you will need for Ariel’s stand. You’re covered dude.

And after he does all that I can set him up with a divorce attorney.