Why don’t you just use HIS lathe for metric stuff? Then let him use YOUR lathe for imperial stuff?Hey there @Standard Modern 10” : I have the imperial version of that lathe and have pretty much rebuilt/remade a significant portion of it. A 127 tooth 16DP is going to be just over 8 inches in diameter - that will be pretty big!
My "plan" for adding change gears to my lathe to cut metric threads would be to reduce the 127 tooth gear using a 20 or 22 DP cutter for the gear and effectively reduce it to under 6 inches in diameter. I have the plans for most of the build to convert an imperial lathe to metric but have not explored the other way as I have no data on the "metric" version.
Questions:
Is the lead screw metric?
What are the gears driving the current quick change gear box? The imperial version is: 48 Teeth to 83 Teeth to 48 teeth the lead screw is 8 TPI
In order for me to change up the threading I need to make the 127 tooth gear (will first need to make a 127 hole diving plate for my rotary table) and then make some idler gears to change the 22DP gear back into the current arrangement - further tooth comparisons are leading me to believe the gears are 20 degree PA and not 14.5 PA ...alas...but ....not an issue if I remake them all to the 14.5 PA
If you have some pictures of the lathe and the arrangement of the drive gears that would be great. I have a few things done up in ACad for making an idler bracket etc
Oh yes - I am just North of Barrie so not that far
Awesome to hear from you. My headstock has the same gears. My lead screw is .875 dia. and the pitch is 4 mm. I have to check my gearbox gears for tooth count. I do have a standard gearbox also to compare to. I’ve been thinking of swapping them out but engaging and disengaging the lead screw could be a problem sometimes . I’m at work right now. Chat again I hope.Hey there @Standard Modern 10” : I have the imperial version of that lathe and have pretty much rebuilt/remade a significant portion of it. A 127 tooth 16DP is going to be just over 8 inches in diameter - that will be pretty big!
My "plan" for adding change gears to my lathe to cut metric threads would be to reduce the 127 tooth gear using a 20 or 22 DP cutter for the gear and effectively reduce it to under 6 inches in diameter. I have the plans for most of the build to convert an imperial lathe to metric but have not explored the other way as I have no data on the "metric" version.
Questions:
Is the lead screw metric?
What are the gears driving the current quick change gear box? The imperial version is: 48 Teeth to 83 Teeth to 48 teeth the lead screw is 8 TPI
In order for me to change up the threading I need to make the 127 tooth gear (will first need to make a 127 hole diving plate for my rotary table) and then make some idler gears to change the 22DP gear back into the current arrangement - further tooth comparisons are leading me to believe the gears are 20 degree PA and not 14.5 PA ...alas...but ....not an issue if I remake them all to the 14.5 PA
If you have some pictures of the lathe and the arrangement of the drive gears that would be great. I have a few things done up in ACad for making an idler bracket etc
Oh yes - I am just North of Barrie so not that far
Hello. I believe my gearbox is smaller than the 1340 but it’s possible that it might have the same gears. I need to take it off the machine to view them easily but I have a few projects to finish before I do this. I’ve seen the chart for standard to metric but not the metric to standard. That is something I could probably use in the future if I can figure out what will work in my headstock. I thank-you for any kind of help you can give me. Have a great day.
Hello it’s off topic but I used to go to a trailer park for lots of the summer in wasaga beach when I was a we lad
Yes it is still here. Wasaga has really grown. Thanks for the welcome comment.
Thank-you
