Team Deathly - first trainer bot

[Deathly Hallows]

This is the same problem I have at the moment; the wheel bore being that ever so bit big. Tape has worked ok for me in testing, but won’t stand a chance in combat, plus the motors also just spin if I suddenly apply power. I’d suggest Banebots wheels but they only do awkward American measurements to my knowledge. Smaller wheels might work better if you can sacrifice the ground clearance, around 100mm would work better and reduce the motor spinning freely. If it’s just for testing, though, this setup should do for now but I’d advise you to fully modify them (locking down the clutch mechanism) for combat but that’s for another day.

Thanks for the advice. In my case the large washers and PTFE really held them solid. Turning up the torque on the blots would be very solid. I could further strengthen by drill 4 small holes through the washer and hub and bolting them in. Even some small screws, fixing the washer to the hub would work for this class I think. As you see they are chunky hubs. Plan for now is lighter wheels with smaller bore. But if I find a solution I may put them back on. This is only a 'test bed' but they looked so tough and chunky a real shame.

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[Deathly Hallows]

Why I chose fairly big wheels - I gave it some thought and I see some advantages:

- A larger wheel makes more contact with a surface than a smaller one
- The rolling circumference is larger, so a higher top speed is achieved for same RPM and more control at low speed
- Larger wheel can flex more shock/energy absorption
- Allows more flexibility in mounting position so in theory with correct design the ride height could be adjusted

In all my designs I intend to use the biggest wheels I can get away with for the above reasons.