# 2WD buggy layout: mid-motor vs rear-motor

> Mid-motor or rear-motor 2WD buggy: what's the difference?

- Category: Car design › Suspension geometry
- Kind: Standard part
- Basis: Design rules and figures from the cited sources; example geometry by Xem Studio
- Page: https://xemstudio.com/objects/rwd-mid-vs-rear-motor/ · JSON: https://xemstudio.com/api/geometry?object=rwd-mid-vs-rear-motor · Plain text: https://xemstudio.com/objects/rwd-mid-vs-rear-motor/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- Rear-motor 2WD buggies hang the motor behind the rear axle, putting weight on the driven wheels for low-grip tracks and strong acceleration but with a tendency to wheelie (RCTech forum).
- Mid-motor layouts centralise mass and lower the yaw inertia, so the car turns in and straightens with less effort and slides more predictably; racers describe them as better on medium-to-high grip (RCTech forum).
- These are racer reports, not measured data.

## Sizes

| parameter | value or range | source |
|---|---|---|
| Mid-motor benefit | centralised mass, lower moment of inertia | RCTech forum |
| Rear-motor benefit | more rear weight, low-grip traction | RCTech forum |
| Weight transfer not tunable out | 200 g+ | RCTech forum |

## Where the files are

- RCTech forums: [Advantages of mid motor vs rear motor RWD buggy](https://www.rctech.net/forum/electric-off-road/907243-advantages-mid-motor-vs-rear-motor-rwd-buggy.html) — web — Publisher's page; dimensions are facts

## Questions

**Which for dusty tracks?**

Racers favour rear-motor on low grip (RCTech forum).

## Fits with

- [Camber angle](https://xemstudio.com/objects/camber/)
- [Caster angle](https://xemstudio.com/objects/caster/)
- [Front kick-up (RC)](https://xemstudio.com/objects/kick-up/)
- [Front toe (toe-in / toe-out)](https://xemstudio.com/objects/toe-front/)
- [Rear toe-in](https://xemstudio.com/objects/toe-rear/)
- [Ackermann steering geometry](https://xemstudio.com/objects/ackermann/)