A while back, I would watch rctestflight and a couple of videos. He made a tank, a fully 3d printed tank with brushless motors that went pretty fast. The problem with brushless motors is that for low KV ones, they get expensive very quickly. I used a chaper brushed motor that already had a gearbox on it for higher torque. link: https://www.youtube.com/watch?v=UdL4M4JpdsU&t=7st=7s.
The track designed for 3d printing here
The body
The body with everything attached (no treads)
It's pretty simple: battery to ESC, ESC to motor, ESC to the RX, repeat this two times
BOM:
| Name | Link | Price | Amt | Shipping | Total | Note |
|---|---|---|---|---|---|---|
| Brushed ESC | Link | $6.39 | 2 | $7.14 | $19.92 | |
| Motor | Link | $20.00 | 2 | $0 | $40.00 | Buying from a local supplier, way cheaper than official |
| Lipo | Link | $35 | 1 | $0 | $35.00 | Amazon is more expensive but cheaper overall w/ free ship |
| Drive Axis | Link | $3 | 2 | $0 | $6.00 | |
| Stay Axis | Link | $5 | 1 | $0 | $5.00 | |
| MOD gear | Link | $10 | 4 | $0 | $40.00 | |
| Bearing | Link | $2 | 5 | $0 | $10.00 | |
| Hyper hub | Link | $3 | 2 | $0 | $6.00 | |
| Receiver | Link | $24.99 | 1 | $10 | $34.99 | |
| M3 by 16 for tracks | Link | $8.09 | 3 | $0 | $24.27 | |
| M3 heatset inserts | Link | $18.99 | 1 | $0 | $18.99 | |
| M4x8 | Link | $10 | 1 | $0 | $10.00 | |
| M4x12 | Link | $9 | 1 | $0 | $9.00 | |
| Total | $259.17 |