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Anti-dive

What is anti-dive suspension geometry? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio

Also called: anti dive, pro squat, brake dive, anti dive percentage, rc anti dive, front hinge pin angle, anti dive geometry, nose dive braking

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

sizes
3 in table

Notes

  • Anti-dive is the braking counterpart of anti-squat: geometry that limits how far the front compresses when braking. On a full-size car it is a percentage: the height where the tyre-force line through the side-view instant centre crosses the CG plane, divided by CG height (Formula1-Dictionary).
  • On RC cars it is the front inner hinge-pin angle with the rear mount higher; a steeper angle adds anti-dive and corner-entry steering, reduces front weight transfer under braking and decreases caster (CompetitionX).
  • The file is a reference example built by Xem Studio from the numbers above (Reference 1/10 off-road: track 250 mm and 90 mm wheel+tyre (EFRA maxima); wheelbase illustrative. Front-axle variant.). Sizes the sources do not fix are illustrative; scale the example to your own vehicle.

Anti-dive size chart

parametervalue or rangesource
Anti-dive % definition(force-line height at CG plane / CG height) x 100Formula1-Dictionary
Example50% = crosses halfway to CGFormula1-Dictionary
RC steeper pin anglemore anti-dive, more entry steering, less casterCompetitionX

Where the files are

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

Formula1-DictionaryAnti-Dive and Anti-Squat Suspension GeometrywebPublisher's page; dimensions are facts
CompetitionXRC suspension tuning guide: anti-divewebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json

anti-dive-geometryAnti-squat demo: rear arm line rising 0° to the instant centre (illustrative layout)STEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=anti-dive

Anti-dive, isometric render of a generated part
Render of anti-dive-geometry from the free STEP; not to scale.

Fits with

Camber angle, isometric render of a generated part
Camber angle4 sizes★ 1 file
Caster angle, isometric render of a generated part
Caster angle5 sizes★ 1 file
Front kick-up (RC), isometric render of a generated part
Front kick-up (RC)4 sizes★ 1 file
Front toe (toe-in / toe-out), isometric render of a generated part
Front toe (toe-in / toe-out)3 sizes★ 1 file
Rear toe-in, isometric render of a generated part
Rear toe-in3 sizes★ 1 file
Ackermann steering geometry, isometric render of a generated part
Ackermann steering geometry4 sizes★ 1 file

Questions

What does 50% anti-dive mean?

The braking force line crosses the CG plane halfway between ground and CG (Formula1-Dictionary).