BigDaddyG - I'll bite!
So, a 4 start engages at 4 places - got that.
Question 1:
If its 5 threads per inch (on a 4 start) is that the same as a 20 TPI -
normal/single start?
Question 2:
So on the threaded rod: 4 start 5 TPI - the nut rotates 20 times in an inch? How is that different from a 20 TPI thread rod?
Question 2a:
Or, does it rotate 5 times per inch - because it takes a bigger bite?
Question 3?
Do I get tighter tollerances on the 5 TPI/4 start for the same travel and therefore better resolution?
Question $:
Same price - highrer?
Final tounge in cheek:
Maybe you can get me straightened out (untwisted) here?
Jim