# Shock angle and mounting position

> How does shock angle affect an RC car?

- 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/shock-angle/ · JSON: https://xemstudio.com/api/geometry?object=shock-angle · Plain text: https://xemstudio.com/objects/shock-angle/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

- Leaning a shock over reduces its effective rate at the wheel at first and makes it rise through the travel. Tekno: more lean gives softer initial damping, more progressive damping and more side traction; less lean gives harder, more linear damping and a more responsive car.
- CompetitionX notes that increasing the angle on the shock mount locations reduces understeer and improves bump handling.

## Sizes

| parameter | value or range | source |
|---|---|---|
| More lean | softer initial, more progressive, more side traction | Tekno setup guide |
| Less lean | harder, linear, more responsive | Tekno setup guide |
| More angle | less understeer, better bumps | CompetitionX quick guide |

## Where the files are

- Tekno RC: [Tekno RC Setup Guide](https://teknoforums.com/misc/Tekno-RC-Setup-Guide.pdf) — web — Publisher's page; dimensions are facts
- CompetitionX: [RC Quick Setup Guide](https://www.competitionx.com/?p=129) — web — Publisher's page; dimensions are facts

## Questions

**Why is it progressive?**

As the arm rises a leaned shock straightens, so its effective rate increases (Tekno describes the progressive feel).

## 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/)