MOSTLY SUSPENSIONS
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Instant center location with adjustable 4link

INSTANT CENTER LOCATION

The following spreadsheet provides the instant center location for an adjustable 4link. The horizontal and vertical dimensions are related to the rear tire patch.

center of gravity height =

wheelbase =

Upper Link Location and Length:

horiz. dist. to rear pivot =

vert. dist. to rear pivot =

vert. dist. to front pivot =

top bar length (pivot to pivot) =

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:

vert. dist. from track surface:

percent anti-squat:

LOCATING UPPER LINK FOR SPECIFIED PERCENT ANTI-SQUAT

Since the percent anti-squat is more significant than the actual location of the instant center (see Page 12), the following spreadsheet determines the upper link location for a specified percent anti-squat when the lower link location is predetermined.

The horizontal and vertical dimensions are related to the rear tire patch.

center of gravity height =

wheelbase =

percent anti-squat =

Upper Link:

horiz. dist. to rear pivot =

vert. dist. to rear pivot =

top bar length (pivot to pivot) =

Bottom Link:

horiz. dist. to rear pivot =

vert. dist. to rear pivot =

vert. dist. to front pivot =

bottom bar length (pivot to pivot) =

UPPER LINK LOCATION:

vert. dist. from track surface to front pivot:

LOCATING LOWER LINK FOR SPECIFIED PERCENT ANTI-SQUAT

Since the percent anti-squat is more significant than the actual location of the instant center (see Page 28), the following spreadsheet determines the lower link location for a specified percent anti-squat when the upper link location is predetermined.

The horizontal and vertical dimensions are related to the rear tire patch.

center of gravity height =

wheelbase =

percent anti-squat =

Upper Link:

horiz. dist. to rear pivot =

vert. dist. to rear pivot =

vert. dist. to front pivot =

top bar length (pivot to pivot) =

Bottom Link:

horiz. dist. to rear pivot =

vert. dist. to rear pivot =

bottom bar length (pivot to pivot) =

LOWER LINK LOCATION:

vert. dist. from track surface to front pivot:

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