PARTS I LIKE
This is a list of common parts, and each link will send you to a page which will give you more information, including purchase links. (this isn't done yet, sorry)
Gearboxes
- 20mm_Gearbox - strong and durable spur gearboxes (40g)
- Repeat_Drive - very tiny planetary gearboxes
- N20 - extremely tiny spur gearboxes (10g)
Speed Controllers (ESCs)
- Malenki - triple brushed ESC with integrated receiver (10g)
- Dual_ESC - various manufacturers sell ESCs that control two brushed motors (10g)
- BL Heli - lightweight and robust brushless ESCs, can be reprogrammed for different parameters (10g)
Wheels
- Botkits_Wheels - 2.75 in foam wheels
- Fingertech_Wheels - aluminum hubs that clamp foam wheels of various sizes
- Lego_Wheels - some people use Lego tires, I haven’t played with this yet
There are a lot of other parts, but these are ones I know are pretty common. To find other parts, BIG_LIST_OF_ROBOT_SHOPS is a resource I have set up.