MK III headsteady adjustment

Mick - yep, that's the way I see it and I have set everything up with the bike on it's wheels and sitting upright - no load on the rubber bushings by using shims (washers) on the right side so that it is all "neutral" with the bike upright and no load.

Thanks!

Back to the springy thing...I moved the spring to the forward hook but it turns out that I drilled the holes for piece that holds the trunion too high on the front of part #1 and the nut bottoms on the end of the threaded portion before achieving the 1.5" spring stretch. I'll unscrew the nut and add some washers under it to push the trunnion down further - needs another 1/8" or thereabouts. I should have asked here first about the position, BEFORE I drilled the holes! Oh well, no big deal but that nut is a PITA to screw/unscrew 1/8th turn at a time with a wrench due to the springs and no access to put a deepwell socket on it.

rick in seattle said:

Each of the springs have a spring constant of 140 lbs/in. As they are in parallel, you need to insure that the adjustment produces a 1/2" exension in the coil length, to produce a net of 140 lbs of force along the jug axis. This approximately unweights the isos, as the engine cradle assembly weighs 140 bs...

Click to expand...

Bingo.