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Droop (downstop)

Name: Droop (downstop) dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

What is droop on an RC car? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio

Also called: droop, rc droop, downstop, droop screw, suspension downtravel, droop setting, rear droop, front droop, droop gauge

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

sizes: 2 in table

Notes

Droop is how far the suspension extends below ride height, set with droop screws (Tekno). More front droop lets the nose rise on throttle and shifts weight back for exit traction; more rear droop gives more entry steering but less braking stability.
Less droop suits smooth tracks and quick direction changes; more suits bumps and jump landings. EuroRC suggests adding 2-4 mm for rough surfaces.

Droop size chart

parameter	value or range	source
Rough-track change	+2-4 mm droop	EuroRC set-up guide
Left/right	must match	Tekno; EuroRC

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
EuroRC	Short set-up guide	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=droop

Schematic, not to scale.