From: | Rob Olsen | e-mail: | olsen4@sympatico.ca |
Subject: | RE: RE: RE: RE: deluxe clutch plates | Date: | Tue Jul 7 19:44:38 2015 |
Response to: | 5856 |
A few reasons why installing fiber disks are superior to metal on metal plates. 1)overcoming the effects of cohesive and adhesive forces. The factory found this to be a problem and cupped the plates which worked for a while, until under spring pressure and heat they flattened out. There is also a service shot about grooving plates to attempt to solve the problem. All metal plates also require higher spring pressures to avoid slipping, which increase wear and pressure required to operate 2) Fiber creates less heat 3) less metal particles 4) Some Fiber plates require less spring pressure due to a higher coefficient of friction, also reducing pressure required to disengage. Less spring pressure also reduces load on internal parts, forks, and assembly. There are a number of different types of fiber used and I used to make kits with a green Kevlar fiber originally 25% kevlar, as time went on and the product was no longer made in North America, the offshore fiber became lower in quality and today is not much more than 2% aramid fiber which is a knock off of Kevlar. This current cheaper green fiber is also a long chopped fiber made mostly up of cellulose and resins, The problem is the long chopped fiber has, and can plug small oil passages. For these reasons I no longer use the green fiber in 4's I've been making clutch kits for antique twins and fours since 1996 and have seen the fiber market change and swing heavily over to Chinese made products. I currently use fibers based on Kevlar, carbon fiber and Feramic specifically designed for the application You can make the original metal on metal plates work just fine though, Thanks Rob ----- ORIGINAL MESSAGE FOLLOWS ----- if they are metal to metal like my racing bulls why is everyone installing kevlar linings . this only costs 30 bucks a piece to have done so then why bother doing it .?????any input on this subject appreciated ----- ORIGINAL MESSAGE FOLLOWS ----- I have some shocking news for you mike. These are metal on metal plates. Also, be cautious about just popping out new ones. Half of the plates have a warp to them which allows for the clutch to easily release in the oil bath. If you want to improve, I suggest purchasing a King Clutch. New plates with, I believe, Kevlar linings. I have one in my KJ. Very smooth. :John ----- ORIGINAL MESSAGE FOLLOWS ----- ----- ORIGINAL MESSAGE FOLLOWS ----- can anyone show me in detail how the clutch plates are properly installed . i have (9)plates but none have lining on them and need to know which ones have to be relined.all were in a box when i received this hen. none even show where lining was installed as they are scorched and i was going to laser new ones and have them relined.thanks. |