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The following spreadsheet provides the instant center location for a torque arm suspension.
vertical dimensions are related to the rear tire patch.
center of gravity height =
Torque Arm Contact Point:
horiz. dist. =
Bottom Link Location and Length:
horiz. dist. to rear pivot =
vert. dist. to rear pivot =
vert. dist. to front pivot =
bottom bar length (pivot to pivot) =
INSTANT CENTER LOCATION:
horiz. dist. from rear axle centerline:
dist. from track surface: