07 D7 Clutching

[Schmidty]

Its that time of year again. Time for me to break out the ol' sled and attempt to learn something new. I spent all day reading up on clutching, and how to determine what is the best for you. In about 80 percent of the thread on it the ultimate answer was to experiment and note what works and what doesn't. My issue is, is that i didn't get much on how to determine which spring to use in either the primary or secondary. Didn't get anything on how elevation effects it nor did I get anything about how weight effects it.

I sorta understood that the primary springs have 2 numbers. eg. 140-330, It takes 140 lbs to engage and its at full shift at 330 lbs.
I'm fairly sure that the primary clutch needs to be balanced with proper weight?

I also sorta understood the helix. It has 3 numbers. like 48-62-48(made up) The first one in the initial angle, the second the secondary angle, and the third is the distance of the initial angle?
I'm fairly sure I'm going to get this wrong but the spring in the secondary clutch controls backshift? I'm unsure whether or not there is weight in here though. Also read something about a delrins, what are those? and what are the for?

Obviously I don't know much, I'm 17 and didn't grow up shadowing anybody to learn the ways, so this is all new to me.

Any help anyone could provide, I'm sure I will have LOADs of questions because I'm trying to learn and create the best setup for me sled.

Thanks,
Schmidty

 

[Chuck D7]

There's no need to try and figure out what works for your sled unless you wanna strictly drag race or hill climb. If you want an all around good boondocking setup go with 140/340 primary spring (team green spring) and a team black/purple secondary. Find the correct weight for your elevation. I ride 6 to 9000 ft and use 60 gram bellybusters. As far as a helix I use 60 40 .40 and works great all around. The only thing I ever change is my helix for different snow conditions and weights for different elevations. Get your clutch balanced and make sure your weights are all exactly the same with a scale. I run 19 42 gearing and it makes a noticeable difference. Oh, the derlins are for the secondary and they are just two plastic washers that go under the spring cup so that it rotates smooth and doesn't bind at all.

 

[Schmidty]

Im going to ask a few stupid questions. Do both clutches need to be balanced? Do you get them balanced after you add the weights? And how do you know how much weight to use? Im around 0-3000ft.

 

[MORSNO]

PM'd you. I have the same sled here in AK.