Building a 6x6 similar to wild thumper

Help & Support Robot Parts
1

Hey all, so i am VERY green at this robotics thing, i have been involved with RC cars for years, but never scratch builds like this… anyway I’d like to build a 6x6 similar to the wild thumper, 6 motor on wheel configuration… except i want it to be much stonger, faster, and water resistant than the wild thumper.

Here’s my cart, anything seem totally out to lunch? 3 motors would be wired in parallel to each “side” of the controller board.

The thing that concerns me, is the motors have a stall current of 85a each, where the controller is only rated for 120a peak, will this burn out the controller? (or maybe the controller is overkill because peak efficiency is 10a, so i can go down to the 30a(peak60a)?)

I’d like for this thing to move about jogging/running speed, but also have reasonable torque for climbing hills, chewing through mud, over curbs, rocks, everything i can throw at it. (tires would be anywhere between 4-6" diameter)

links to the items in my cart for ease
6x robotshop.com/ca/en/banebots … 00rpm.html
6x robotshop.com/ca/en/banebots … rease.html
1x robotshop.com/ca/en/usb-robo … oller.html

Thanks in advance for any help on this,

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2

Those parts would indeed make for a more powerful 6WD robot base than the Thumper.
One issue we foresee is that we may be discontinuing / replacing RB-Ban-80.
We should have the replacement RS-550 and RS-555 online within the next few days.
The stall current of the replacement motor is lower than the current one, so you may be able to get away with one dual motor controller for all six motors.
Take a look at the drive motor sizing tool to get an idea of the torque and rpm you’ll need:
robotshop.com/blog/en/drive- … -tool-9698

3

thanks for the response, do you know if i could put this gear set on a different 540-550 size motor? i like the dewalt motors because i can buy them over the counter at a local service center, and they last relatively well even with abuse like water/mud. (only hard part with them is i cant find definitive specs)

I’ll wait to see what the new motors look like, i really hope they are similar power with a lower power requirement.

4

You’d need to check the complete dimensions (shaft length / diameter, and mounting hold locations), so there’s no guarantee.
We should have the new motors listed online shortly.