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Author Topic:   4 Link
Dirt Dawg
Dirt Roller

Total posts: 8
posted July 30, 2000 01:05 PM
Question:

What is the maximun angle on the upper links of a 4 link setup that can be used? we're at 13 degrees L and 17R Would it be a good idea to go to 22degree? What are your experiences. We're looking for more bite on a heavey - tacky track

Thanx

FIB-BIF
Dirt Full Roller

Total posts: 29
posted July 30, 2000 04:11 PM
DO U HAVE GOOD BITE ON A SLICK??????? USUALLY A 4-BAR CAR HAS KILLER BITE ON A HEAVY TRACK, AND OFTEN U WILL HAVE TO TAKE OUT SOME ON THE L.R. TO KEEP THE L.F. ON THE GROUND, THIS IS DONE BY LOWERING THE LEFT AND RAISING THE RIGHT. THE OPPOSITE FOR A SLICK TRACK. ARE YOU USING A '00 SET-UP W/ LOTS OF L.R.???


KEVINHAMMONS@HOPKINSCHASSIS

Dirt Dawg
Dirt Roller

Total posts: 8
posted July 30, 2000 09:46 PM
Thanx for the reply,

Yes we have good bite on a slick. As for the 00, I'm not sure what you mean by this. I haven't been at this very long. I have a ton to learn. About 145 rear split, LR Heavy.

So... are you suggesting we should try lowering the RR or raising the LR or do both?
Or should we rais both leaving the LR lower than the RR?

We already have the LR lower than the right. We leave it like that all night. 13 degrees on the LR and 17 degrees on the RR.

[This message has been edited by Dirt Dawg (edited 07-30-2000).]

FIB-BIF
Dirt Full Roller

Total posts: 29
posted July 31, 2000 12:35 AM
THE MORE ANGLE, THE MORE UPHILL DRIVE. WITH MORE UPHILL DRIVE, USUALLY MORE FORWARD BITE.
THE BAR ADJUSTMENTS ARE A SIMPLE THEORY, MORE LEFT DRIVE=TIGHTER, MORE RIGHT DRIVE=LOOSER. OF COARSE WHEEL WEIGHTS,SHOCKS, AND SPRINGS ARE JUST AS IMPORTANT. THE '00 AVERAGE SET-UP IS AS FOLLOWS: LF 500# W/ A 75 SHOCK - RF 425-450# W/ A 76 SHOCK - LR 275# W/ A 94 SHOCK - RR 200# W/ A 94 SHOCK. YOUR CHASSIS MFGR. SHOULD HAVE RIDE HEIGHTS. SET RF,LF,AND RR TO THEM. SET TO 150# LR ON A HEAVY, AND AROUND 200# FOR A DRY. IF YOU HAVE THIS OPTION, PUT THE LR SHOCK/SPRING ON THE FRONT FOR A TACKY TRACK, AND PUT THE SPRING(OR BOTH) ON THE REAR FOR A SLICK TRACK. THIS SET-UP WORKS VERY WELL ON MOST 4 BAR CARS. HOPE THAT THIS HELPS YOU!!!

Dirt Dawg
Dirt Roller

Total posts: 8
posted July 31, 2000 08:38 PM
Thanx,

Yes this helps.

1.)But I'm still wondering about the angle of the uppers. Everone seams to think that 17-18 degrees is the max. The next hole up takes us to 21 1/2 degrees. Is this to much?

2.)Would it be crazy to run the left upper higher that the right upper? Does anyone ever run a set-up like this.

It's nearing the end of the season, we're in the top 3 in points. I'd hate to experiment with something that would make us look really stupid. I hate making big changes this close to the end.

As for the shock behind on the LR, we're going to try that this week.

Dirt Dawg
Dirt Roller

Total posts: 8
posted July 31, 2000 08:42 PM
Here's an after thought, or should I say question. If we try the LR shock behind, what angles should the shock be?

Thanx again

FIB-BIF
Dirt Full Roller

Total posts: 29
posted August 03, 2000 12:14 AM
hey dirtdawg, running the uppers higher on the left than the right is common practice. it usually keeps the car on the rr longer for a slick track. the 20+ deg. uphill might work well! remember the theory i mentioned!
also remember that 2 holes or more make a substantial difference. try to tune a hole at a time! the shock needs really needs to be a little forward on the top(3/4-1 1/4) and as level as you can from left to right.

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