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Author Topic:   Help with 3 link in the ruts
dirttruck75
Dirt Roller

Total posts: 11
posted July 11, 2005 03:36 PM  
I am running a 2004 harris 3 link 650RF 77 750LF 76 175RR 94 200LR 93,pullbar with pr,j bar 48% cross. The car runs great when the track is smooth but later in the night the track gets ruts so deep the sprinters are rolling over. Car comes in great but mid turn the rr gets in the ruts and the car tries to rotate around it(toward the WALL).How can I get over them. Ive tryed a 96 in the RR but I get very loose coming in.1/4 high bank tacky to dry.

autoshop
Dirt Freak

Total posts: 298
posted July 11, 2005 04:32 PM  
try going to a long panhard bar behind the rearend when the track ruts up. that will settle down the rear when it hits the ruts.

dirttruck75
Dirt Roller

Total posts: 11
posted July 12, 2005 03:13 PM  
quote:
Originally posted by autoshop:
try going to a long panhard bar behind the rearend when the track ruts up. that will settle down the rear when it hits the ruts.

Do you think I can get away with only running 48% cross with a long panhard?

autoshop
Dirt Freak

Total posts: 298
posted July 13, 2005 11:00 AM  
I ran 49.5 in mine(2002 harris)

dluna
Dirt Freak

Total posts: 334
posted July 13, 2005 11:12 AM  
What are you trailing arm lengths and angles. How much rake do you have in your JBAR?

dirttruck75
Dirt Roller

Total posts: 11
posted July 13, 2005 03:48 PM  
I have 2" in the j bar about 22 degrees on the lr with the long trailing arm 21"(but thinking of going to a short one) and 16 degrees on the rr.If I lower the RR the car has a horrible throttle push and if I lower them both I have no forward bite.

[This message has been edited by dirttruck75 (edited July 13, 2005).]

dluna
Dirt Freak

Total posts: 334
posted July 13, 2005 04:05 PM  
Where do you have the jbar on the pinion? Even with the yoke?

If you can't lower each arm 1 hole, try dropping the RR back down 1 hole and add some static trail on the right side to help with the push. If you go to a shorter bar on the left side, you should be able to drop both arms 1 hole and still have forward bite.

Chad
Dirt Freak

Total posts: 269
posted July 14, 2005 10:37 AM  
The flatter you can run the j-bar or panhard bar the better the car will be through the ruts. I used to run a three link, and ran the bar almost flat (1/2" split), but this was with a long bar behind. You can accomplish some of the same effect with a j-bar by taking the split out (the difference between the pinion and frame mounts). Try running only 1/2" to 1" and see how it works. You'll lose some side bite but you'll make up for it when you're car isn't being jacked around through the ruts.

Fastride 38
Dirt Maniac

Total posts: 125
posted July 19, 2005 05:58 PM  
Have you tried runing more air pressure in all four tires? Maybe, uping the air will keep the wheel out of the ruts but not change the handling of the car. Just a thought.

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