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Author Topic:   Burning the tires offf!!!!
Dirt-Tracker
Dirt Maniac

Total posts: 182
posted April 17, 2005 08:09 AM  
Car runs decent for first half of race then its like all forward bite is gone after half of race.

lf 1276-2 rf-1275-3
lr 1294 rr 1293

lf 650 rf 650
lr 200 rr 175

60% rear
50% cross
57# of lr
Hoffman car 2 link with short plugs
9deg of pinion

what can Ido to keep the forward bite!! Car is real good on tacky....when it starts getting slick....I start going backwards!!

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"Somedays your the dog, and somedays your the fire hydrant!!!"

www.geocities.com/albertson28racing

orange2mod
Dirt Maniac

Total posts: 113
posted April 17, 2005 09:30 AM  
Check to make sure your undersling isn't coming up against the rearend.

andykmod
Dirt Freak

Total posts: 351
posted April 17, 2005 12:00 PM  
Try more rear %

donslink1
Dirt Freak

Total posts: 318
posted April 17, 2005 05:10 PM  
check air press. after the race and see how much it is gaining, you might want to go to Nitrogen instead of air.

2870
Dirt Roller

Total posts: 14
posted April 17, 2005 06:54 PM  
I would try getting the lr bite over 100#
cross over 52%
And if she doesn't have a push in, swap shocks left to right
75-3 76-2
9-3 9-4

tilley88
Dirt Forum Champ
Total posts: 879
posted April 17, 2005 10:08 PM  
Check for air building up in the tires. My RR will gain 3-4 lbs in a feature.

N4cer5
Dirt Roller

Total posts: 13
posted April 18, 2005 09:57 AM  
You could try stiffening your front springs about 50# each,what kind of pull bar are you running and what angle is it at. Check your tire pressures after the race and if one tire is gaining more than the other than that tire isnt doing any work and needs more bite. I do agree nitrogen works better. Hope this helps

36modracer
Dirt Maniac

Total posts: 126
posted April 18, 2005 11:30 AM  
give jerry a call at the shop417-673-7426. we have a hoffman 4bar/zlink and its new to us. everytime weve called jerry has been very helpful. we have a metric car but run 800 in both fronts and 225lr and 175rr. otherwise were pretty similar, little more cross though. we have our jbar 9 inches from bottom of frame bar to bottom of sliding bracket. we run bilstein shocks. I still suggest calling jerry for a hand.

Ego Racing
Dirt Forum Champ
Total posts: 724
posted April 19, 2005 08:00 AM  
I agree with more cross! If you are running alcky you are loosing alot of rear weight, try scaling our car after a race and see where the numbers are at you might be suprised.
We found our car was loosing about 5-7% raear and our cell was mounted to the left side so we also lost left rear weight. Now our cell is a little over to the left so as we loose weight in the rear we gain left side %.

Ego Racing
Dirt Forum Champ
Total posts: 724
posted April 19, 2005 08:05 AM  
The left side weight gain works on our local track as it gets tighter as the race goes on. If your track gets slickeryou want to loose left to help the car roll onto the right rear.

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