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Re: Caveats for Meshing Gears of Dissimilar Pressure Angle?
Both the normal gear, and these profile shifted pinion gears have involute tooth profiles. In use the pressure angle (and thus the net force vector) will be different than the standard 20 degrees.
The change in pressure angle alters the efficiency somewhat; as the Tangental force turning the gear is a function of the cosine of the pressure angle.
Buckingham's text is 50 years old. Shigley's Machine Design book has been the standard ME text book for thirty years at just about all major US universities.
The fatigue life of these gears might be lower, but it would never be an issue during a single FRC season or two.
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Last edited by InFlight : 03-12-2016 at 18:17.
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