DavidBC
Active Member
Hi all I need help. Attached is a copy of an email I sent to Myford which will explain my problem. Would be grateful if anyone can help.
I have a Long Bed Myford Super 7 fitted with a quick change gearbox, Lathe S/N SKL108912 and Gearbox S/N QC105103 and also a Metric Conversion Set
1481/1 all purchased from Myfords Australian agent as a special order in 1972. I need to be able to cut imperial threads additional to and outside of the default range of 8 to 56TPI of the gearbox. As an example I need to be able to cut 60TPI. Do you have an imperial chart similar to the attached one that would help me with additional gearing and position of the gearbox levers as the attached metric chart shows. If you do not have a chart do you have information that I can use to work out the required gear setups utilizing the gearbox gearing and lever positions as in the metric conversion. The only thread charts I can find with the pitches I need are for the std ML7 without the gearbox. If you do not have anything that could help me achieve the results I need would I have to purchase from Myford a full set of std ML7 change gears. If I have to do this in what position would I have to put the gearbox levers to allow a change gear set up made up of std gears to work.
I have a Long Bed Myford Super 7 fitted with a quick change gearbox, Lathe S/N SKL108912 and Gearbox S/N QC105103 and also a Metric Conversion Set
1481/1 all purchased from Myfords Australian agent as a special order in 1972. I need to be able to cut imperial threads additional to and outside of the default range of 8 to 56TPI of the gearbox. As an example I need to be able to cut 60TPI. Do you have an imperial chart similar to the attached one that would help me with additional gearing and position of the gearbox levers as the attached metric chart shows. If you do not have a chart do you have information that I can use to work out the required gear setups utilizing the gearbox gearing and lever positions as in the metric conversion. The only thread charts I can find with the pitches I need are for the std ML7 without the gearbox. If you do not have anything that could help me achieve the results I need would I have to purchase from Myford a full set of std ML7 change gears. If I have to do this in what position would I have to put the gearbox levers to allow a change gear set up made up of std gears to work.