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Old 01-13-2012 | 08:39 PM
  #14829  
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Mizchief
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Joined: Oct 2011
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Originally Posted by MantisWorx
Coyote, have it your way i was just trying to find the source of your problem that you asked for help with. I am moving on, let us know what fixes your problem.

Mizchief, its hard to say without seeing what your truck is doing how to fix it but in general you will get more exit push due to the wieght transfer and the dif. tuning is a compromise game, i can tell you how to eliminate it but then it will push on entry and you will have slower laptimes. You are exit pushing because now you have much more rear traction than before and the truck is not rotating on exit where as before your truck was "sliding on exit". There are a few ways to help with this one being your Roll center shims. Adding to them lowers the roll center which will give you more push on entry and more steering on exit. I run 5mm on mine. Toe in will aslo give you less entry steering but more exit steering, i run 1* of toe in on my truck.

Now onto your weight transfer, if you run the 3-3 block it will put more traction on the front and increase on power steering. But you must understand that as it is right now if you add any more rear traction the front tires will come off of the ground. Thats how a dif works, when the front tires are ballooning that means that there is max traction at the rear which goes back to why you are having exit push!!

Shock oils with the 2 stage pistons: to get the maximum potential you want to run the oil as light as you can get away with on a rough track (tight high grip is a different story). i have posted many videos of my truck jumping, landing , turning and 95% of those vids are 25/20(the other 5% are 17wt!!). My latest video (the montage) even has slow motion of jumps with flat bottom landings and the truck is no where near "slapping" or getting upset. Lately i have been running front and rear shock mounts outside on the arms. Strictly on the subject of piston reactions, running the shocks on the outside speeds up piston action and because of the way they work (piston clap) the faster they move ,the more they will pack.

The pistons actually have four stages of action. compression, rebound, low speed pack and high speed pack. Once again if you refer to the videos you will notice that no matter how high i jump or low i jump the truck settles the same way at the same height! Running thicker oils (remember when i was testing V2 piston) simply doesnt work as well no matter what size holes i would drill. So what you are doing by running 30 wt is overpacking the large jumps, it will be fine on med jumps and every where else but they will actually hydro lock for a millisecond before releasing and this will upset the truck more so than and occasional slap. If your trying to tune your truck around one or two jumps on the track you will suffer everywhere else. Even if you do slap with the 2 stage since the rebound is quicker it will not upset the truck near as bad as single stage pistons.

hope this helps
Thanks for the info! The more I learn the more I find out there is to learn. Overall I like the handling much better than I did before the center diff and dual stages.

I could push the big 90deg sweeper as hard as the tires could grip without traction rolling like I was before, it would go right into the perfect drift angle instead and with too much speed would drift to the wall gradually rather than roll or spin around.

While most of the other guys were more green than I running 2wd's it still felt great being the fastest guy out there and I got a lot of practice pacing the other cars from a few feet behind watching out for an avoiding them when they wrecked and trying out different passing lines.

I think your right about the rear traction, while the fronts would ballon, it was only at near full throttle with the 4k pro4 and the rears were laying some rubber in the process. I guess I can't ask for much more than having all 4 wheels spin at the same time.

I'm think saddle packs may be the missing ingredient in this, having that weight riding a little closer to the front should help keep it more distributed.
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