Custom gearboxes

[apalrd]

Originally Posted by mglucido

I see that most teams are adding the 0.003" to the center-to-center gear distance. What's the best way to calculate the starting center-to-center from which to subtract 0.003"

- Inventor Gear Calculator? ... Which seems fairly straightforward
- Something better?

Thanks,
Michael

(number of teeth on gear A + number of teeth on gear B) / (2 * dp)

For AM gears DP is either 20 or 32, usually 20.

FYI, for a given c-c distance, any combination of gears with the same combined number of teeth will fit. E.g. 25-40 will fit in the same c-c distance calcualted for 20-45.