Side note, if that is not the perfect add for how badass general grabber sidewalls are, idk what is....
CK5
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'81 K5, "BlaZeus"- How to NOT build the ultimate budget K5; 3 & 4 link build
Looks way better painted... 
#labelsout
Show off!!! Damn you!!
My understanding about jumping vehicles is you should lift off the throttle in the air. If your on the throttle then the tires spin faster in the air than the truck is going..then have slow down when they meet the ground to match the speed of the vehicle and the laws of physics....that shock puts a huge load on your drive train and thats how stuff breaks. what your landing on obviously effects that also.
BlaZeus
The Real Mateo
So....finally jumped it...just a little one but I feel like I can finally call it a done deal now that I have gotten some rubber off the ground.
Is it me or does it look kinda stiff?
BlaZeus
The Real Mateo
Does it feel stiff?? How bout some whoopage pics? I thought this was a Prerunner?
BlaZeus
The Real Mateo
still trying to get them from my pops. got some vids. its more of an ultra 4 type deal now. prerun and crawl stuff.
What spring rates are on it?
BlaZeus
The Real Mateo
350/450 in front. 300/400 in rear.
That is incredibly stiff for the front.. that's why it appears stiff, even more so if you have the secondary rate stops setup properly it'll be like hitting a wall once the 450 comes into play. You need 250/250 and if the back is not on the trailing arm(can't remember) it'll be even lighter than that.
It'll drive 100x better with the proper springs on there.
I have a 250 over 300, geometry of the suspension will play in as well.
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It's 1:1 so it'll probably only have 900-1100 lbs per corner. Maybe less because he doesn't have a core support.
With the shock and spring virtually straight up and down there will be little need for a crazy rate change and right now he's going from 187 in lbs to 450 in lbs, that's crazy.. and you can see it on the jump and landing.
With the shock and spring virtually straight up and down there will be little need for a crazy rate change and right now he's going from 187 in lbs to 450 in lbs, that's crazy.. and you can see it on the jump and landing.
Yours goes from 146 to 300 so not nearly the big jump and depending on where the stop is located you may not see the rate jump until late in your travel.
BlaZeus
The Real Mateo
idk...we had fun and it worked well. 
A HUGE step up from the performance at BB16! 
A HUGE step up from the performance at BB16!
BlaZeus
The Real Mateo
MOAR
Good man! Lots of good videos to analyze what's happening, ok so a couple things, the reason it's a lot better is because you actually have some droop and the spring rates actually still lower than most all lift springs which means it'll still be better than it was.
It'll not sure how much droop you have from ride height so maybe chime in on that. Also keep your eyes peeled on rdc for springs, the springs is what I would touch first because that bases some of what your rebound is going to do and if you lose spring rate you will loose some rebound force from the spring. That aside it looks like the rebound is too slow and there isn't enough compression damping which is why it falls into holes, part of that could be your going to slow. Either way it would help.
If you want help tuning this let me know.
It'll not sure how much droop you have from ride height so maybe chime in on that. Also keep your eyes peeled on rdc for springs, the springs is what I would touch first because that bases some of what your rebound is going to do and if you lose spring rate you will loose some rebound force from the spring. That aside it looks like the rebound is too slow and there isn't enough compression damping which is why it falls into holes, part of that could be your going to slow. Either way it would help.
If you want help tuning this let me know.
