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Track width

Name: Track width dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

What does track width do and what are the RC limits? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio

Also called: rc track width, wide track, narrow track, wheel track, max width rc car, hex offset track, track width stability, front track rear track

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

sizes: 5 in table

Notes

Track width governs side-to-side stability while wheelbase governs front-to-rear stability (CompetitionX). It also appears directly in the Ackermann condition (raw.org).
RC classes set it by maximum car width: 190 mm without body for EFRA touring cars, 250 mm for 1/10 off-road, 172 mm for 1/12.

Track width size chart

parameter	value or range	source
EFRA touring width	190 mm without body, 200 mm with	EFRA
ISTC width	170-190 mm without body	AARCMCC
1/10 off-road max width	250 mm	EFRA
1/12 max width	172 mm	EFRA
FSAE example	1262 mm front, 1392 mm rear	Univ. of Utah FSAE

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

CompetitionX	RC Wheelbase Explained	web	Publisher's page; dimensions are facts
raw.org (kinematics notes)	Ackerman steering	web	Publisher's page; dimensions are facts
EFRA	EFRA Handbook 2010, Appendix 3: Electric Cars	web	Publisher's page; dimensions are facts
AARCMCC	Section 3: Electric On Road, Technical Rules (Oct 2006)	web	Publisher's page; dimensions are facts
University of Utah, Mechanical Engineering	Formula SAE Suspension System (senior design)	web	Publisher's page; dimensions are facts

Xem scan

File coming

No downloadable true-size file yet: the published figures do not fix the whole shape, and Xem never guesses a number. A measured scan is planned; request it and it moves up.

Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.

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Plain text: sheet.txt · JSON: /api/geometry?object=track-width

Schematic, not to scale.