tkuss
TY 4 Stroke Junkie
I understand and know how centripetal force works, and how the weights in the clutch fly out. But how does the actual sheave move back and forth. I don't understand how the clutch can compress the primary spring. To me the spinning clutch and weights are only making force in the Y direction so to speak, how does the clutch translate the Y-direction force into the X direction.
Hopefully somebody understands what I mean, it is kind of hard to describe or explain.
Thanks.
Hopefully somebody understands what I mean, it is kind of hard to describe or explain.
Thanks.
RedRocket
TY 4 Stroke Junkie
Basically as the weights spin faster they move outwards away from the engine, these weights are shaped so as they swing outwards on a pivot they push the rollers that rest on them. As they push these rollers outwards, it pushes the helix out that they are connected to and this allows the belt to slide down into the clutch center lowering the front drive ratio and spinning the belt faster and faster.
Here is a good site that shows more on how it works:
http://science.howstuffworks.com/snowmobile1.htm
Here is a good site that shows more on how it works:
http://science.howstuffworks.com/snowmobile1.htm
Len Todd
TY 4 Stroke God
The Primary is forced open by the spring. The weights force it closed.
Turk
Tech Advisor
The primary is forced to upshift by the weights overpowering the primary spring.
Heavier weights/lighter primary spring = faster upshift=lower rpm,s.
Lighter weights/softer primary spring = slower upshift/higher rpm,s.
The centrifugal force of the primary throws out the weights & forces the primaryto upshift.
When decelerating the primary downshifts from the force of the primary spring & the weights folding back into a nuetral position.
Heavier weights/lighter primary spring = faster upshift=lower rpm,s.
Lighter weights/softer primary spring = slower upshift/higher rpm,s.
The centrifugal force of the primary throws out the weights & forces the primaryto upshift.
When decelerating the primary downshifts from the force of the primary spring & the weights folding back into a nuetral position.
Len Todd
TY 4 Stroke God
Whatever you say Turk! But, you might want to think about the terms Open and Closed a bit further.
I was thinking that Open means the sheaves going further apart and Closed means sheaves going closer together. (i.e. the gap between them opening or closing.) I guess one could consider the contact points in the clutch and could say it's circle is opening up as the clutch increses RPM, etc.. But then, I presonally seldom think of a circle as opening and closing (i.e. geting larger or smaller in diameter). Come to think of it, my engineers never talked about a circle that way either.
I just have a hard time corelating the sheaves moving closer together as opening them up. But, you can call it whatever you want.
I was thinking that Open means the sheaves going further apart and Closed means sheaves going closer together. (i.e. the gap between them opening or closing.) I guess one could consider the contact points in the clutch and could say it's circle is opening up as the clutch increses RPM, etc.. But then, I presonally seldom think of a circle as opening and closing (i.e. geting larger or smaller in diameter). Come to think of it, my engineers never talked about a circle that way either.
I just have a hard time corelating the sheaves moving closer together as opening them up. But, you can call it whatever you want.
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