To determine the amount of track needed, determine total travel length and the type of mounting (center or off center.) Then, locate the fixed end and determine the type of movement.

Two different equations help determine track length. For center mounting:

Mc =(Ls/2) + Lb
where the number of links equal the total length, Mc, divided by the link length.

The off-center mounting equation is:

Moc = (Ls/2) + Off-center + Lb
where again, the number of links equals the total length, Moc, divided by the link length.