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Author Topic:   leftr rear shock for 4-link?
avenger 11
Dirt Forum Racer

Total posts: 88
posted February 07, 2005 03:36 PM  
I switched to a 4-link left rear and I am not sure what left rear shock to go to.I am thinking a 98-3 or 99-3,would that be close to keep the left rear from dropping so violently when getting out of the gas?

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted February 07, 2005 04:12 PM  
Those might be a little extreme. Id try a 6-3 or 7-3 to start. Also how much angle your spring lays in will affect it as well.

avenger 11
Dirt Forum Racer

Total posts: 88
posted February 07, 2005 05:34 PM  
Spring is clamped in front,straight up and down,no slider.

[This message has been edited by avenger 11 (edited February 07, 2005).]

LATE MODEL 9W
Dirt Full Roller

Total posts: 66
posted February 07, 2005 09:45 PM  
Pierce cars on that setup run afco 93 or 94 depending on track conditions

sdracer12
Dirt Maniac

Total posts: 180
posted February 07, 2005 10:27 PM  
With the spring clamped in front, I assume the shock is mounted behind the axle on the birdcage. Most people start with the 6-3 or a 7-3, (compression - extension). It seems like after you get used to it, most people get back to a 5-3, or a 4-2, or even a straight rate shock. The biggest gains you can make to set the car down smoothly is with your foot.

Also remember, when the shock is mounted behind and the car is up on the bars, the indexing moves the entire shock upward with the chassis. A shock has to be in compression to control the downward movement of the chassis. If you jump out of the throttle, the car is still going to drop hard for a time, regardless of what the shock rate is.

graham cook
Dirt Roller

Total posts: 7
posted February 07, 2005 11:35 PM  
quote:
Originally posted by avenger 11:
Spring is clamped in front,straight up and down,no slider.

[This message has been edited by avenger 11 (edited February 07, 2005).]


could you please explain what clamped means?

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted February 08, 2005 07:47 AM  
Clamped up means the spring is mounted to a bracket that is clamped to the rearend housing, like many 2 link cars. On the gas the rearend will rotate thus loading the spring at the same time.

sdracer is right. with the shock behind on the birdcage, indexing will work against the shock for a short time. But depending on the angles in your 4 link bars will determine how much indexing you have. In general it seems like most clamped cars have less indexing than LR behind cars due to differences in bar angles, at least that is what i have noticed. But all in all your talking about 1" or so indexing and 4" rearend movement so it will still help calm it down. I have heard of some late models going 7-2 shocks on the left and 2-7 shocks on the right.

[This message has been edited by dirtbuster (edited February 08, 2005).]

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