# RC 1/12 pan car wing and spoiler

> What wing and spoiler sizes do 1/12 pan cars use?

- Category: Car design › Car aero
- Kind: Standard part
- Basis: Design rules and figures from the cited sources; example geometry by Xem Studio
- Page: https://xemstudio.com/objects/rc-pan-car-wing/ · JSON: https://xemstudio.com/api/geometry?object=rc-pan-car-wing · Plain text: https://xemstudio.com/objects/rc-pan-car-wing/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

- 1/12 on-road 'pan' cars run a moulded body with either a wing or a short spoiler, sized by rule. EFRA allows a wing 172 mm wide whose profile fits a 52 x 26 mm box, or a spoiler up to 25 mm high and 35 mm long, with side dams up to 72 mm high.
- As on full-size cars, a spoiler is a body-edge lip while a wing is an airfoil with flow over both faces (CompetitionX).
- Used on: 1/12 electric on-road cars.
- The file is a reference example built by Xem Studio from the numbers above (EFRA 1/12 maximum box.). Sizes the sources do not fix are illustrative; scale the example to your own vehicle.

## Sizes

| parameter | value or range | source |
|---|---|---|
| Wing width | max 172 mm | EFRA |
| Wing profile box | 52 mm (height) x 26 mm | EFRA |
| Spoiler | max 25 mm high, 35 mm long | EFRA |
| Max wing/spoiler height | 65 mm | EFRA |
| Side dam | max 72 mm high | EFRA |
| Overall width / length | 172 mm / 340 mm | EFRA |

## Where the files are

- EFRA: [EFRA Handbook 2010, Appendix 3: Electric Cars](https://www.efra.ws/wp-content/uploads/2010/03/Handb10App3.pdf) — web — Publisher's page; dimensions are facts
- CompetitionX: [RC Wings Explained](https://www.competitionx.com/?p=489) — web — Publisher's page; dimensions are facts

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

Index: https://xemstudio.com/files/hardware/rc-pan-car-wing/index.json · license: https://xemstudio.com/files/hardware/rc-pan-car-wing/LICENSE.md

- rc-pan-car-wing-rear-wing: [STEP](https://xemstudio.com/files/hardware/rc-pan-car-wing/rc-pan-car-wing-rear-wing.step) · [STL](https://xemstudio.com/files/hardware/rc-pan-car-wing/rc-pan-car-wing-rear-wing.stl) — single rear wing: span 172 × chord 26 mm at 6°, endplates 52 mm, inverted NACA 4412 section (mounts from below)

## Questions

**Wing or spoiler?**

Rules allow either; the spoiler is limited to 25 x 35 mm (EFRA).

## Fits with

- [Single-element rear wing (race car)](https://xemstudio.com/objects/rear-wing-single-element/)
- [Dual-element (two-element) rear wing](https://xemstudio.com/objects/rear-wing-dual-element/)
- [Swan-neck rear wing mount](https://xemstudio.com/objects/swan-neck-wing-mount/)
- [Gurney flap / wickerbill](https://xemstudio.com/objects/gurney-flap-wickerbill/)
- [Wing endplates / side dams](https://xemstudio.com/objects/wing-endplates/)
- [Front splitter](https://xemstudio.com/objects/front-splitter/)