MOSTLY SUSPENSIONS
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TORQUE ARM REAR SUSPENSION


The following spreadsheet provides setup information for a torque arm suspension. The results will provide equal rear tire loading during launch...regardless of the value of driveshaft torque...and no squat or rise.

Base values have been adjusted to provide essentially identical link angles, but this is not required. Note also that the link angles will provide some roll understeer.

The "offset of torque arm" is a lateral (to the driver's right or positive "Y" in the SAE system) displacement from the car's centerline.

TORQUE ARM SETUP

torque arm length (from axle) =

left link length =

right link length =

link spacing =

offset of torque arm =

effective rear tire radius =

axle ratio =

rear track =

weight of car with driver =

weight of rear axle assembly =

center of gravity height =

wheelbase =

LEFT LINK REAR MOUNTING POINT

horizontal distance forward from rear axle centerline =

vertical distance from track surface =

RIGHT LINK REAR MOUNTING POINT

horizontal distance forward from rear axle centerline =

vertical distance from track surface =

ANSWERS:

Vertical Distances From Shop Floor To Front Of Link
Left LinkRight Link

Instant Center Height

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