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Author Topic:   4 bar/Z link question
modified8
Dirt Roller

Total posts: 11
posted May 17, 2005 04:24 AM  
I took all my springs off of my birdcages, clammed the L rear (4 link),wondering if you put the shock behind the rearend or leave it on the birdcage. On the R rear ( Z link) do I leave the spring on the birdcage or move it to the top of the housing. I am trying to get the car freed up, no left rear heat no matter what I have tried.

dirtmod0
Dirt Maniac

Total posts: 143
posted May 17, 2005 06:24 AM  
clamp the LR in front shock behind and run the spring on top on the RR with the shock behind.
what kind of bar angles u running

boas51
Dirt Maniac

Total posts: 190
posted May 17, 2005 07:04 AM  
if you want to "free" up the car, leave the rr spring on the front of the birdcage, and move the lr spring to the front of the birdcage. you can also try moving your pullbar to the right 1-2". you can run less lr bar angle, more rr bar angle, keeping in mind that a larger difference in upper and lower bar angle on the same side will effect bircage indexing, more difference will equal more index. more index with the lr behind will equal more bite, with the lr infront it will equal less bite.

modified8
Dirt Roller

Total posts: 11
posted May 17, 2005 04:42 PM  
set up goes like this:
L side bars: 22 top,15 bottom
R side bars: 6 top, 4 bottom
LR spring 250 on rear of BC RR spring 250 on Z link
LF 800 spring RF 850 spring
54% rear ,52 % x, 53% LS with out driver
car handles good middle out can't get it coming in the corner,tried everything else
thats why thinking about clamping LR

FlyNLoIMCA17
Dirt Forum Champ
Total posts: 753
posted May 17, 2005 07:27 PM  
correct me if I wrong, but if you clamp the LR spring in front of the housing that will loosen the car on entry, because it unloads the LR when backing off the throttle. Thats what your wanting right? Is looser going in.

But it will also tighten the car when your on the throttle because your no longer relying on birdcage indexing to compress the spring, instead you are compressing it with diff. housing rotation under acceleration.

modified8
Dirt Roller

Total posts: 11
posted May 18, 2005 02:17 PM  
when adjusting the j-bar on the rear housing which way do you go(up or down) to create more body roll
any help will be great

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted May 18, 2005 02:34 PM  
Your setup doesnt look to bad except i think with the LR spring behind on the BC you need to take some lower bar angle out, down to 5* or so. Then bump up the rear % to 57 and drop the left % to about 52.

If you have no heat in the LR then it sounds like you have the car 'too free' you are using the RR too much and the LR not enough.

Clamping the LR wont make much difference on entry. It looks to me like your car would be loose on entry and sliding around a little bit, then with all the left% prob comes off good but not as good as if your entry were better.

modified8
Dirt Roller

Total posts: 11
posted May 20, 2005 06:45 PM  
Thanks for all the help, think we got it figured out, the birdcages were all messed up.Hope it works, thanks again

GRTWallbanger
Dirt Maniac

Total posts: 196
posted May 22, 2005 09:10 AM  
When the LR has no heat and the RR is hot you say the car is to free?Our car is like that?What do you suggest, seems to need forward bite?4bar-zink

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