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So what does the weight affect in the clutch.What does the spring affect? What do the mounting hole on the clutch do?Does the pilot jet just manage low speed ie idling starting? If you jet up you richen? if you clip up you ...?What does the helix do? I have a 98 with v force 2 and slp twin 700 xc 2300 ft
 

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So what does the weight affect in the clutch.What does the spring affect? What do the mounting hole on the clutch do?Does the pilot jet just manage low speed ie idling starting? If you jet up you richen? if you clip up you ...?What does the helix do? I have a 98 with v force 2 and slp twin 700 xc 2300 ft[/b]
This is pretty much just the basics, but there is many different theorys on how to clutch a sled because all the components work together and against each other, You can clutch for different situations such as drag racing where backshift isn't much of an issue you just want to load the motor hard and only care about the upshift. Trail clutching where backshift is important because you're off and on the throttle alot and you have to make sure you have good belt grip to reduce excess heat.
Heavier weight lowers rpms, you load your motor with the weights for your suggested peak rpm. If you look at the system and think about it you can kind of visualize how the different forces in the system work together and against each other. Your weights are used in your primary to add the force of closing the primary to grip the belt to make it rotate. So you have your primary spring to act against the clutch from just slamming closed, without the spring if you started the sled the clutch would slam close and sled would take off. So thats why the primary spring effects the sleds engagement. The spring will also slightly change your peak rpm.
Now with your secondary its normally closed tight to your belt and doesn't move until the primary grips the belt and climbs up the clutch pulling the belt into the sec. making the sled move. so your spring and helix are used to open the clutch at different rates. Whick lowers the belt in the sec. to up shift. Like how a ten speed bike works, when shifting up on a bike your chain jumps to a smaller sprocket in the rear making multiple turns of the tire for every 1 revolution of the pedals, therefor increasing speed. So your secondary spring is used to grip the belt and counter act the sec. clutch from flying open climbing up the helix ramp and dropping your belt down in the sheaves making the sled bog out of the hole. (like taking off in 10 gear on a bike, takes alot more force to turn the tire) This is also why it is important for your clutch to be adjust so the belt sits slightly above the secondary sheaves so your sled will start out at the lowest gear possible. The different angles of the helix affects the rate at which the sled shifts, the shallower the angle the easier the sled will up shift but you will have less back shift. If you have a steep angle when you let off the gas the sheaves will come together faster because it has a steeper ramp to roll down. Sorry its late and I can't think anymore tonight I'll let someone else take over from here or finish sometime later. good night :beer_cheers:
 
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