Front Forks


Well Known and Active Forum Website User
Non-VOC Member
This Yahoo group site contains several files of interest to Vincent types.
For example, graphs of trail and axle movement.
Go to
then join the group 'frontforks'
then click on 'Files'.
It is dead easy [and free] to join and to leave any Yahoo group.
You can avoid showing your email address, which is worthwhile for security reasons.

Although graphs of front wheel axle movements and fork trail have been made available in the past, this web site attempts to be more complete.
It includes Vincent Twins of Series A, B, C and D.
It includes solo and sidecar use [except for Series A - solo only] and also the special short top link for Girdraulic forks, developed by Bruce Main-Smith for sidecar use.
For comparison purposes, a solo Velocette KTT VIII is included.