I suspect it might be a nyloc nut.
The chassis panels/bulkheads arrived today and not going to lie, it is a squeeze, especially when you consider the polycarbonate base panel is 500mmx250mm big. The top panel covering the two bulkheads is 100mm wide for reference. There should be two outer panels at the edge of the base panel as well.
DSCF6339.JPG
You can see the two 500W scooter motors on there and one of the CIM motors on there along with a space as to how big I think the gearbox is. Definitely going to have to vertical mount the ESC, batteries and radio gear on the middle bulkhead. I could get some more space by moving the motors to the edge of the panel but it would only increase the centre space for the weapon and expose the gearboxes to the outside world which, obviously, is not good.
I'll be marking out where the cuts need to be made for the bulkhead grooves/motor mounts but I need to make a final decision on the motors. The CIM motors simply allow for more space but are smaller and should be less powerful as a result. Anyone well versed in these to qualify that thought?
The other thing to consider is that because the CIM motor, even with the gearbox attached, is smaller and lower to the base plate than the scooter motors, the wheel sizes change but because the shaft changes, I can work with the shafts from a Banebots CIM gearbox (https://www.robotshop.com/uk/banebot...gearbox-4.html or https://www.robotshop.com/uk/banebot...unt-12to1.html, likely the latter due to a similar output shaft RPM to the scooter motor). The scooter motor shafts will need a flat putting on them (which I know isn't ideal) so... choices.![]()
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