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Author Topic:   3-link: rear end square, lead or trail???
BrianW
Dirt Freak

Total posts: 385
posted September 09, 2004 12:54 PM  
OK - I've been thinking about trying to run the car with the rear end a little "off square" but am having a problem visualizing the best way to go...

The background: I've got a problem on turn 2 the back end gets loose and wants to come around when the track gets slick... The track is a 1/2 mile with the typical straight front along the stands' wall and the back stretch is rounded out (exit wall pushed back) When I scaled the car I got (from memory) the settings at rear 54% cross 54% left 52%. The link on the right side is at 15* uphill, the left side is at about 6-7*, the top bar is about 18* downhill. Have played with wheel offset and tire pressures to no avail - can't get the thing to hook in turn 2 when it gets dry-slick... does fine in 3/4....

Any ideas or hints on other things to try? Once I get this sorted out the only thing I'm lacking is a lot of HP to keep up!!

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted September 09, 2004 01:05 PM  
Well right off the top of my head the angles on the trailing arms seem backwards. Most people i have seen either run them the same or with the left one higher. That would help tighten exit on dryslick. The best we got our short 2 link to work was with about 12* in both arms.

mod70
unregistered Total posts: 2007
posted September 09, 2004 04:06 PM           send a private message to dirtbuster   Edit/Delete Message   Reply w/QuoteBBBBBB
Have you tried running your rear stagger straight up or even reversed? This is a trick that I've seen on dry slick.

BrianW
Dirt Freak

Total posts: 385
posted September 10, 2004 07:51 AM  
OK - that's what I get for typing off the top of my head - the left link is the higher one and the right is flatter...

I haven't tried reverse stagger - going to have to think about that one. The RR tire runs hotter than the LR but it's probably 30-40* or so, would that help even out temps and tighten the exit?

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted September 10, 2004 08:37 AM  
Have you tried more rear%. When the track was super slick we ran close to 60% with our 2 link. Might try bumping it up a little and see if that helps.

What springs are you running? Where are the rear springs mounted in front on top or behind the axle?

Can you move the 3rd link to the left any?

[This message has been edited by dirtbuster (edited September 10, 2004).]

mod70
unregistered Total posts: 2007
posted September 10, 2004 08:56 AM           send a private message to dirtbuster   Edit/Delete Message   Reply w/QuoteBBBBBB
The reverse stagger is definatly ment to help to tighten on exit, and should help to put more temp is the LR by loading it more.

droper23
Dirt Freak

Total posts: 233
posted September 10, 2004 10:26 AM  
How much left rear bite do you run. I had a 3 link that I ran about 140 lbs. of left rear and never had any problem. Also is 52% the rear percent. I would try to raise that to at least 56%.

fastdad12
Dirt Full Roller

Total posts: 33
posted September 14, 2004 04:58 PM  
Shorten the rr 1/8in at a time until it tightens up coming off.

autoshop
Dirt Freak

Total posts: 298
posted September 15, 2004 01:16 PM  
might also try to flatten out the rr arm or even aim it downhill some

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