Re: Helical Gears


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Posted by shawn cooper on February 15, 2008 at 16:09:32:

In Reply to: Re: Helical Gears posted by BillS on February 04, 2008 at 03:09:58:

OK this is where I am and is still not cutting a good helical can anyone help is this the right ratio and gears for a barbar coleman 10-20

Driver 67
driven 22
driver 43
idler
driven 25

22 and 43 are on the same stud

Lead ratio DR/DN = N/TL
N= 55 (number of teeth)
T= 1 (# threads on hob)
L= 10.499583 (Lead of gear)

Hob is right hand single lead
gear left hand single lead

Climb cutting

ratio we came up with is 5.2383032




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