Thread: Clutch
-
01-20-2018 #41Senior Member
- Join Date
- Dec 2017
- Posts
- 2,941
Belleville spring .... ^^
The new generation ....
What makes that spring so good over the coil springs of yesteryear is it's ability to give even pressure all the way around the 360 degrees of the clutch pack ...
The introduction of Norton's Commando series in 1968 had several great changes, including: "an entirely new clutch design from the earlier Norton twins. Designed by Laycock Engineering, the new design featured a diaphragm style spring," http://preservationcycle.com/index.p...86&Itemid=1739
"At launch, the very early models came with conventional multiplate wet clutches. But these were soon replaced in production with diaphragm clutches." http://www.classic-british-motorcycl...-commando.html
-
01-20-2018 #42Senior Member
- Join Date
- Apr 2013
- Posts
- 9,659
The Belleville washer spring on later Harleys is what birthed those conversions. Thank famous Norton engineer John Favill for bringing them from the Norton to the HD world. If you catch his lectures at Norton meets they are entertaining and informative.
Too bad Norton didn't copy HD trans instead of the delicate fossil they used.Last edited by farmall; 01-20-2018 at 2:22 PM.
Reply With Quote
