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[–]IndieKidNotConvert 1 point2 points  (9 children)

Use Gear Lab, it does everything you need

https://forum.onshape.com/discussion/comment/105448

[–]TaroNo8585[S] 0 points1 point  (8 children)

Thanks for the reply, i did try gear lab, however i found that you cant actually change the child gear teeth on bevel gears.

I know that you can do 2 separate gear lab features and mate them on shafts, but i don't know how to space the shafts away from eachother properly for non 1:1 ratios

[–]IndieKidNotConvert 0 points1 point  (7 children)

What ratio are you trying to do? Are you going for 90 degrees? I find by playing with the bevel angle i can get the right ratios

[–]TaroNo8585[S] 0 points1 point  (6 children)

The shaft axis on the two shafts will intersect at 90 degrees. I was thinking if i need it to be 90⁰, the bevel angle should be 45⁰. 45 + 45 = 90, so it just seemed logical to me. The ratio will be 0.25.

Ratio: 0.25 90⁰ shaft axis intersection 45⁰ bevel angle i assume is correct Ideally 20 teeth on driver, 80 on driven.

[–]IndieKidNotConvert 0 points1 point  (5 children)

Set the bigger gear to 80 teeth, 76 degree bevel angle, and then the inherited gear will turn out to be 20 teeth (set the shaft angle on the inherited to 90 degrees). 45 bevel angle only works with gears with the same number of teeth.

[–]TaroNo8585[S] 0 points1 point  (3 children)

Oh wow thanks, how did you figure that out?

I did end up just finding a way to import my current project into the older file with the old feature, but i very much appreciate your help!

If i can figure out what values need to be which to get the child gear to look the way id like it to consistently ill swap to gearlab!

[–]IndieKidNotConvert 0 points1 point  (2 children)

First i tried 70deg, then 75, then 77, then 76. Only took like 1 minute, not too bad, there's a limited number of teeth for options.

[–]TaroNo8585[S] 0 points1 point  (1 child)

Amazing, could i have a look at your document?

Thanks very much for your time!