Cutting BA threads on Myford Super7

[David Allen 8Participant @davidallen8]

BA Threads can be cut on a Super7 with the following gear ratio's. I've used the 2BA setup and works fine, the rest are untried so should be used with care.

OBA Driver 45t, 1st Stud driven 40t, 1st stud driver 21t, 2nd stud 50t[idle wheel] leadscrew 75t. [Setup-2 refer to Myford handbook]

2BA Driver 30t, 1st Stud driven 63t, 1st stud driver 40t, 2nd stud 55t[idle wheel] leadscrew 75t. [Setup-2 refer to Myford handbook]

4BA Driver 21t, 1st Stud driven 50t, 1st stud driver 46t, 2nd stud driven 40t, 2nd stud driver 30t,leadscrew 70t. [Setup-3 refer to Myford handbook]

6BA Driver 20t, 1st Stud driven 60t, 1st stud driver 35t, 2nd stud 45t[idle wheel] leadscrew 70t. [Setup-2 refer to Myford handbook]

[David Allen 8Participant @davidallen8]

[Author]

Posts