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Triangulated 4-link (solid axle)

Name: Triangulated 4-link (solid axle) dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

What is a 4-link suspension and why do crawlers use it? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio

Also called: 4 link, four link suspension, triangulated 4 link, rc crawler 4 link, solid axle links, link separation, 4 link anti squat, crawler suspension, scx10 links, 4-link geometry

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

sizes: 3 in table

Notes

A triangulated 4-link locates a solid axle with two lower links and two angled upper links; the triangulation locates it sideways so no panhard bar is needed (Axial).
Axial says it moves the axle in a more linear path with less sway, steer and torque twist than a 3-link. Builder rules of thumb on NC4x4: at least 6 in of vertical link separation at the axle and 40 deg or more of triangulation for lateral control.

Triangulated 4-link size chart

parameter	value or range	source
Vertical link separation (full size)	6 in or more	NC4x4 forum (rule of thumb)
Triangulation	40 deg or more	NC4x4 forum (rule of thumb)
Upper vs lower links	uppers shorter so anti-squat falls with droop	NC4x4 forum

Where the files are

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

Axial	Suspension Link Types Explained	web	Publisher's page; dimensions are facts
NC4x4 forum	General 4 Link Suspension Design Information	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.

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Plain text: sheet.txt · JSON: /api/geometry?object=four-link-solid-axle

Schematic, not to scale.