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Author Topic:   Switching from long bar to J-bar on solid 3 link
UFnARacing
Dirt Maniac

Total posts: 179
posted July 02, 2004 12:42 PM  
Thinking about making a change to get more bite off the corner. This isn't a mod, it's a full bodied pro stock that I've made to a 3 link using all stock lower trailing arms. You can see pictures of it on the website below if you need to. I'm running a long (28") panhard behind the rearend now and I wonder what changing to a j-bar on the left of the pinion would do. The car setup is good now, just don't have enough bite off the corner (can only get 50% rear!).

Any help would be appreciated.

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http://webpages.charter.net/ufnaracing/

Ego Racing
Dirt Forum Champ
Total posts: 724
posted July 06, 2004 11:28 AM  
The J bar loads the rear end more equaily than the long bar as it places load at the center of the rear. The long bar loads the right rear more than the left rear, but more important, the J bar loads the rear sooner and allows more bar angle than the long bar. If you need more right rear bite you can move your top link towards the tire in need and it will transfer bite to that tire.

UFnARacing
Dirt Maniac

Total posts: 179
posted July 06, 2004 02:59 PM  
I was hoping for someone to reply, it was looking grim for awhile. Here's my thought.....my long bar attached to the axle at the beginning of the tube just to the right of the pumpkin. The J bar would attach about 4" left of the center of the pumpkin. That does seem to me that it would load the LR more and the RR less. Makes sense that the more angle would load it quicker.

What I'm wondering is the what effect the bar location front to back has on this whole deal. My long bar is about 3" rear of center, the J bar would be about 8". Keeping in mind my bars just have the rubber bushing movement, it may not do anything. The whole idea for angling the uppper link up to the rearend is to use the torque to "raise" the rear of the car, the J bar would be trying to do the opposite.

Now the question is.....would it be worth loading the LR quicker and finding a way to get more RR (side bite)? Sounds like I could do about the same just by moving my upper link to the left.

Like I said, I'm just going through scenarios trying to get some more overall bite. This weekend I lowered my entire bar about 1.5" and it seemed to hook up real good. Some new shocks may be just what I'm looking for now!

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http://webpages.charter.net/ufnaracing/

badfastjr
Dirt Maniac

Total posts: 193
posted July 06, 2004 03:58 PM  
have you thought about puting a short straight panhard bar on the front of the rearend. It loads the left rear a ton and gets great side bite. just a thought, cause i really like it on mine.

[This message has been edited by badfastjr (edited July 07, 2004).]

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