Hi all
I,m in the process of making the Topsy Turvy H&M engine. I'm trying to figure out how to cut the 44 tooth spur gear on my dividing head (40 to 1 ratio). I've figured out how to cut the 22 tooth (1 turn and 27 holes on the 33 hole plate). The 44 tooth set up I've come up with is .9 turns plus 3 holes on the 33 hole plate.... .9 Turns???? Here is how I've come to this conclusion. 40/44 = .9 4/44. working the fraction to arrive at a number on a plate... 4/44 = 2/22 multiply by 1.5 = 3/33 or three holes on 33 hole plate so that's .9 turns plus 3 holes? How's that going to work?? Any help would be appreciated.
Thanks
MikeG
I,m in the process of making the Topsy Turvy H&M engine. I'm trying to figure out how to cut the 44 tooth spur gear on my dividing head (40 to 1 ratio). I've figured out how to cut the 22 tooth (1 turn and 27 holes on the 33 hole plate). The 44 tooth set up I've come up with is .9 turns plus 3 holes on the 33 hole plate.... .9 Turns???? Here is how I've come to this conclusion. 40/44 = .9 4/44. working the fraction to arrive at a number on a plate... 4/44 = 2/22 multiply by 1.5 = 3/33 or three holes on 33 hole plate so that's .9 turns plus 3 holes? How's that going to work?? Any help would be appreciated.
Thanks
MikeG