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Wheelbase

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

How does wheelbase affect handling? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio

Also called: rc wheelbase, long wheelbase, short wheelbase, wheelbase stability, wheelbase spacers, touring car wheelbase, wheelbase vs track, wheelbase adjustment

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

sizes: 5 in table

Notes

A longer wheelbase is more stable, handles bumps better and steers better on exit, but turns in more slowly; a shorter one rotates quicker and shifts more weight rearward on power but is more prone to oversteer (Tekno; CompetitionX).
RC adjustments are small: 1-3 mm with hinge-pin spacers (CompetitionX); Tekno uses 1 and 2 mm spacers over 5 mm of travel.
Classes cap it: 250-270 mm for ISTC touring cars (AARCMCC), 270 mm max (EFRA).

Wheelbase size chart

parameter	value or range	source
RC adjustment	1-3 mm steps	CompetitionX
Tekno rear spacers	1 and 2 mm, 5 mm range (six settings)	Tekno setup guide
ISTC touring	250-270 mm	AARCMCC
EFRA touring max	270 mm	EFRA
FSAE example	1684.47 mm	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.

Tekno RC	Tekno RC Setup Guide	web	Publisher's page; dimensions are facts
CompetitionX	RC Wheelbase Explained	web	Publisher's page; dimensions are facts
AARCMCC	Section 3: Electric On Road, Technical Rules (Oct 2006)	web	Publisher's page; dimensions are facts
EFRA	EFRA Handbook 2010, Appendix 3: Electric Cars	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.

Set it up →

Plain text: sheet.txt · JSON: /api/geometry?object=wheelbase

Schematic, not to scale.