# Anti-dive

> What is anti-dive suspension geometry?

- 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-dive/ · JSON: https://xemstudio.com/api/geometry?object=anti-dive · Plain text: https://xemstudio.com/objects/anti-dive/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-dive is the braking counterpart of anti-squat: geometry that limits how far the front compresses when braking. On a full-size car it is a percentage: the height where the tyre-force line through the side-view instant centre crosses the CG plane, divided by CG height (Formula1-Dictionary).
- On RC cars it is the front inner hinge-pin angle with the rear mount higher; a steeper angle adds anti-dive and corner-entry steering, reduces front weight transfer under braking and decreases caster (CompetitionX).
- 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. Front-axle variant.). Sizes the sources do not fix are illustrative; scale the example to your own vehicle.

## Sizes

| parameter | value or range | source |
|---|---|---|
| Anti-dive % definition | (force-line height at CG plane / CG height) x 100 | Formula1-Dictionary |
| Example | 50% = crosses halfway to CG | Formula1-Dictionary |
| RC steeper pin angle | more anti-dive, more entry steering, less caster | CompetitionX |

## Where the files are

- 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
- CompetitionX: [RC suspension tuning guide: anti-dive](https://www.competitionx.com/rc-tuning-guide/rc-suspension-tuning-guide-anti-dive) — 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-dive/index.json · license: https://xemstudio.com/files/hardware/anti-dive/LICENSE.md

- anti-dive-geometry: [STEP](https://xemstudio.com/files/hardware/anti-dive/anti-dive-geometry.step) · [STL](https://xemstudio.com/files/hardware/anti-dive/anti-dive-geometry.stl) — Anti-squat demo: rear arm line rising 0° to the instant centre (illustrative layout)

## Questions

**What does 50% anti-dive mean?**

The braking force line crosses the CG plane halfway between ground and CG (Formula1-Dictionary).

## 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/)