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Author Topic:   long bar behind rear end
Dirt Maniac

Total posts: 134
posted May 12, 2005 10:56 AM  
we are looking for some help on adjusting a long panhard behind the rear end . Frame on the left side , "warthog " ? on the right side of housing, clamped on also tacked, no easy movement .

we start the night with 20* angle to the right, Where would be a good spot when the track starts to dry out , crumble , does not take rubber. Thank you

Dirt Forum Racer

Total posts: 78
posted May 12, 2005 12:33 PM  
Lowering the bar will tighten you up. We run the long bar. Seems to work the best with out much angle in it on our car.

Scott Vosevich
RDBoyz Racing

Dirt Freak

Total posts: 270
posted May 12, 2005 12:56 PM  
You will have to be able to lower it on the housing side or you will just raise your roll center when you put more angle in it on the frame side alone. Raising your roll center takes away side bite that you want to increase for dry /slick conditions. So,When the track slicks up you want more angle but you want to keep your roll center down.You cant do that with the rear end mount welded unless it has multiple holes to go down to.
When we used to run a long panhard bar we just left the rear end mount location 3 ins. below the rear end center-line and about 7 ins. up on the frame.We would then just move the rear ballast in the car for different track conditions(up,down,left,right) and even occassionally change a spring rate on the RR. A j-bar is more convenient and reactive to angle changes than a long panhard bar. The long bar will also load the RR tire patch harder on entry and can cause a loose exit condition on dry slick unless you add ballast or extreme control arm angle to the LR to tighten things up on the throttle.Then the rear steer deal comes into play. Run a 19 in (or longer) j-bar.g These are just some of the things we have tried and learned over the last 20 years of dirt racing.

doghouse racing4
Dirt Forum Racer

Total posts: 91
posted May 12, 2005 02:03 PM  
Dman...........How much angle do you run in your 19" j-bar when the track is tacky compared to when it gets slick?...

Dirt Roller

Total posts: 13
posted May 12, 2005 08:43 PM  
I also run the long bar behind and still trying to figure it out, what will it do if i just raise it on the chassis side, what will it do if i raise or lower the whole thing in accordance to side bite and roll center. just want to make sure i know what im doin before i do it.

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