- Joined
- Aug 29, 2010
- Messages
- 682

Mounting an 850 Mk III type head steady, and need some help. I've found that the measured spring length should be approx 1.5", and that the thread exposed from below the trunnion is approx .5"
However, where do you tighten the "box section" of the head steady itself --- first? Pushed all the way forward, all the way back, or centered; and then tighten the three bolts to the head ??? I'm guessing that must be done first, and "then" you do the spring length/tension adjustments. Did a copy and paste from below website article:
Finally, with the bike supported off the centerstand so as not to load the Isolastics, set the tension on the head steady spring by adjusting the nut on the trunnion until the spring coil is extended to approximately 1.5 inches. There should be approximately 0.5 inches of thread showing below the trunnion. Check the Isolastics for proper adjustment and you're done.
However, where do you tighten the "box section" of the head steady itself --- first? Pushed all the way forward, all the way back, or centered; and then tighten the three bolts to the head ??? I'm guessing that must be done first, and "then" you do the spring length/tension adjustments. Did a copy and paste from below website article:
Norton Upgrade: MkIII Head Steady - Motorcycle Classics
Upgrade your Norton to a MkIII-style head steady.
www.motorcycleclassics.com
Finally, with the bike supported off the centerstand so as not to load the Isolastics, set the tension on the head steady spring by adjusting the nut on the trunnion until the spring coil is extended to approximately 1.5 inches. There should be approximately 0.5 inches of thread showing below the trunnion. Check the Isolastics for proper adjustment and you're done.