Ok so being a noob I need a little help. I understand there are tons of threads of what oil, shocks, tires, ect people use for jumping. My problem is I don't understand said options to make my own decision in different circumstances.

So my setup right now is blue springs in back silver in front with 50 weight oil and LT arms installed. (LT arms come out for juming I used for forck crawling)

What I don't understand is the WHY.

Let's say that jumps are in the 7 ft of air range.

Questions:
1. What is the difference in changing weights. ie going to 65 instead of 50 or even 30?

2. Why would I put certain springs on? Why blue/silver and what is the difference between lighter and heaver springs in jumping or anything.

I understand that the thicker weight provides a stiffer response and the heaver springs are harder to compress. But why do I want that versus a more plush feel.

3. finally the biggest confusion is pre load. with said settings (50 weight oil, blue/silver springs)

Why would I put the pre load to the top, why would I lower a little or why would I make it tight?

I don't understand the mechanics of this.

Answers to these questions would help me understand the "theory" of the setups and thus could make my own decisions.

also interseted in racing so I think understanding these mechanics would help me make choices for the track.

again thanks you guys are great I searched for this kind of thing and al I have found is I jump so much feet and these are my settings I race and these are mine but I don't know why people choose those settings.

I did post somewhere else and haven't got any responses plus I would like to hear more views.