Planetary Gearbox Possibility?

[sanddrag]

I think your reason there might be a bit flawed. The large CIM motor (one of them) is less powerful than the small CIM motor (one of them). If you put a large CIM into a the planetary, you will get more torque, more weight, less speed, less power, and a larger risk of failure (due to the increased torque).

Can it be done? Yes. Would I recommend it? Probably not.

What is the application?

[ThatIndianKid89]

huh.

thanks for that. lol. That actually helps us out a bit. Do you know off-chance what kind of fps we can get off of the 2.5" hooked up w/ the planetary? (this is all for our drivetrain by the way)

[Lil' Lavery]

Originally Posted by ThatIndianKid89

huh.

thanks for that. lol. That actually helps us out a bit. Do you know off-chance what kind of fps we can get off of the 2.5" hooked up w/ the planetary? (this is all for our drivetrain by the way)

It depends on if/what reduction you have after the gearbox, and what size wheels/pulleys you are using. But, the Banebots transmission has a 12:1 reduction (can be changed to 16:1 with a kit from Banebots), and the free speed of the 2.5" CIM is 5500 RPM. Under drive-train load, you can probably expect around 4320-4400 RPM. If you don't do any further reductions and are using the 6" Kit of Parts wheels, that would translate to about 9.4 (4320 rpm/60 = 72 rps /12 = 6 rps*6pi=113.094 ips/12=9.425 fps) feet per second (probably a bit lower depending on how inefficient your drive system is).