# Anti-squat

> What is anti-squat and how much should an RC buggy run?

- 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/anti-squat/ · JSON: https://xemstudio.com/api/geometry?object=anti-squat · Plain text: https://xemstudio.com/objects/anti-squat/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files Xem Studio Design License (free to use and sell from, not to redistribute as files: https://xemstudio.com/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

- Anti-squat controls how much the rear compresses under acceleration. On RC cars it is the angle of the rear inner hinge pins, front higher than rear (CompetitionX); on full-size cars it is set by the side-view instant centre relative to the CG height (Formula1-Dictionary).
- More anti-squat gives more forward drive on high grip and less on-power steering; less lets the rear squat for grip on loose or bumpy tracks (CompetitionX; Tekno).
- Most 1/10 off-road cars start around 2-3 deg (CompetitionX).
- Used on: 1/10 off-road buggies.
- The file is a reference example built by Xem Studio from the numbers above (Reference 1/10 off-road: track 250 mm and 90 mm wheel+tyre (EFRA maxima); wheelbase illustrative.). Sizes the sources do not fix are illustrative; scale the example to your own vehicle.

## Sizes

| parameter | value or range | source |
|---|---|---|
| 1/10 off-road starting point | 2-3 deg | CompetitionX |
| Insert labels | 0 (flat), 2, 3, 4 deg | CompetitionX |
| Percentage method (anti-dive example) | 50% = force line crosses halfway to CG height | Formula1-Dictionary |

## Where the files are

- CompetitionX: [RC Anti-Squat Explained](https://www.competitionx.com/?p=163) — web — Publisher's page; dimensions are facts
- Tekno RC: [Tekno RC Setup Guide](https://teknoforums.com/misc/Tekno-RC-Setup-Guide.pdf) — web — Publisher's page; dimensions are facts
- Formula1-Dictionary: [Anti-Dive and Anti-Squat Suspension Geometry](https://www.formula1-dictionary.net/f1-anti-dive-anti-squat-suspension-geometry/) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, Xem Studio Design License, Xem Studio)

Index: https://xemstudio.com/files/hardware/anti-squat/index.json · license: https://xemstudio.com/files/hardware/anti-squat/LICENSE.md

- anti-squat-geometry: [STEP](https://xemstudio.com/files/hardware/anti-squat/anti-squat-geometry.step) · [STL](https://xemstudio.com/files/hardware/anti-squat/anti-squat-geometry.stl) — Anti-squat demo: rear arm line rising 2.5° to the instant centre (illustrative layout)

## Questions

**High grip or low grip?**

High grip: more anti-squat; low grip: less (CompetitionX).

## 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/)