Motors

Help & Support Robot Parts
1

To whom it may concern,

We are in the process of building robots for the Skills Ontario Competition and have decided to make smaller chassis. It doing so, we are going to have to switch out the motors we have used for the past decade. We have been using the NPC motors…(picture and description) that are very robust and can easily handle weights of 50 -80 pounds. Since the robot we will be making will be smaller, the max. weight it might have to carry is 20 - 30 pounds. We normally have a tank drive type of system with wheels.
So basically we have to motors in the back with chains that power the wheels in the front …(picture from underneath or top of bot, wherever chains are)…Our robots have always been pretty quick and reliable in competition.

Can you please suggest motors that we could use that are quick and fairly robust that can handle 20-30 pounds that are much smaller than the ones we have been using.

Cheers,

MPSJ Robotics Team

Motor2.jpg
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Motor1.jpg
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Motor 3.jpg
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2

NPC motors are quite nice and we have tried to carry them, but you are correct that they are a bit overkill for 20-30lb robots.
Consider the BaneBots lineup of P60 gearboxes (available in a variety of gear ratios) and compatible motors:
robotshop.com/en/motors-actu … d=Banebots
For example, a 700 series compatible gearbox and motor should work well, for example:
robotshop.com/en/banebots-p6 … rease.html
robotshop.com/en/banebots-rs … motor.html
This is still quite powerful, but much smaller than your NPC. Dimensions are on either product page.

3

What is the RPM for these motors?

Banebots P60 Gearbox: 1.5" Shaft, RS-700 Mount, 64:1 (No Grease)

Cheers,

Carmen

4

The 775 has a no load RPM of 19,500, so adding a 64:1 gear down, you would get ~304 rpm.
Under load they would rotate slower, but the manufacturer does not have an RPM curve available unfortunately.