Insect Class Motors
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Size and weight are always considerations when selecting motors, and it is especially true with insect class robots. Also as with all robot combats think about the nature of your motors. Are they simply meant to deliver the weapon to the opponent or are they an integral part in your attack strategy. Take a look at the available kits to get an idea on how things are typically done. Wedge bots often have four independent motors, while drum bots save weight by having two drive motors.
22mm motors are common in 3lb robots with two being enough to drive a weaponed bot and four working well for a wedge or pushy bot. Brushed versions of 22mm motors are available from placeslike botkits.com but more advanced builders will convert them to brushless setups. This gives them more power for less weight than the brushed versions.
How to make brushless 22mm planetary gear motors
Although some motor resellers provide CAD files for their motors, over at GrabCAD a builder created a useful grouping of common motors.
This needs to be built-out with links. Should we do dedicated pages with links to places to get them, since some have multiple sources.
| Name | Diameter | Length | Weight | Shaft | Voltage | RPM | Comments |
|---|---|---|---|---|---|---|---|
| N20 | 12mm | 10g | 3mm | Variable | Variable | XXXX | |
| 16mm | 16mm | 40.3mm | 28g | 3mm | 6v | Variable | XXXX |
| 22mm | 22mm | 47.5mm | 73g | 4mm | 12v | 780 | XXXX |