Team Deathly - first trainer bot

[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.