cenrtifugal clutch
cenrtifugal clutch
(OP)
HI Guys, new here and hopefully I can get some answers. Bud Warren ( RIP) has developed a (http://www.geareddrives.com/PSRU_for_Subaru.htm) new type of centrifugal clutch/pressure plate, looking at the installation manual , I can't see how is possible to look up the clutch by centrifugal motion on that arrangement. Would appreciate, if there is some explanation.
Thanks
310346
Thanks
310346
RE: cenrtifugal clutch
The assembly differs from a car clutch in that it is not spring-engaged; it is spring-released, and engagement is done by means of bobweights on the clutch fingers.
I.e., centrifugal force acts on the "fingers" (the photos don't show exactly how), and as the engine spins faster, the fingers press on the pressure plate, which gradually clamps down on the clutch disc that is trapped in the space between the flywheel and the pressure plate. As engine speed decreases, the force applied by the fingers is reduced, and at some point is overcome by the light springs shown in the loose pressure plate picture, so the pressure plate moves away from the clutch disc, and the prop is effectively disengaged from the engine..
Mike Halloran
Pembroke Pines, FL, USA
RE: cenrtifugal clutch
310346
RE: cenrtifugal clutch
Find a finger's center of mass. As that moves outward under centrifugal force, either a pivot or a cam surface must convert that to axial motion of some part of the finger toward the pressure plate. That's how it _has_ to work.
Mike Halloran
Pembroke Pines, FL, USA
RE: cenrtifugal clutch
Unfortunately don't have any illustration or drawing other that what is on the webpage. Thinking he would not have invented this and spend over 3 days looking at all the inventions, but dint find nothing even similar excepts the ball bearings pressure plate. There is another link, only made aware after your response on their web pages, perhaps if you care to look into could give you some more clues.
http://w
I have spoken today with pretty clued engineer and he agreed with your assessment but still couldn't work of how/what does make to look up the clutch plate other to say this is mind bogging. Again, I do fully appreciate you help, and hopefully you would have the answers. Thanks
Take care
310346
RE: cenrtifugal clutch
The patent _has_ to tell you how it works.
Mike Halloran
Pembroke Pines, FL, USA
RE: cenrtifugal clutch
It looks like there is a radial post fastened to the periphery of the flywheel, which has a cam roller on its inboard leg, and that the 'counterweight' is forked to guide on one leg of the L, and must have a cam surface machined into one face that interacts with the cam roller to force the pressure plate toward the flywheel.
So far I haven't found a patent for such a thing.
Page 8 has a side view that shows the edge of the clutch disc, the pressure plate, and the radial post mounted to the flywheel. Still no detail around the counterweight/cam roller interface.
Mike Halloran
Pembroke Pines, FL, USA
RE: cenrtifugal clutch
Thanks again, if this in not too much to ask could you please draw me a sketch to be able to understands this in a more objective way. I have done some drawings to your suggestions but it doesn't make any sence to me.
Respectfully
310346
RE: cenrtifugal clutch
Found more info please see here,same principle modified for a bigger engine, maybe you can decipher it now. I think the U shaped are wages and fly out thus depressing the pressure plate..?
http:
Thanks
1946
RE: cenrtifugal clutch
Mike Halloran
Pembroke Pines, FL, USA
RE: cenrtifugal clutch
rmw
RE: cenrtifugal clutch
The good engineer does not need to memorize every formula; he just needs to know where he can find them when he needs them. Old professor