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Re: Launch picture question...
[Re: Jeepmon]
#1053769
08/15/11 10:59 PM
08/15/11 10:59 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
I know what causes the left front to lift more than the right, but what is the fix to get both tires to lift equal ??
Its a ladder bar car, leaving at 4500 rpm, 3100 lbs and this pic was taken on a 9 second pass..
Does the car go straight on the launch
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Re: Launch picture question...
[Re: MR_P_BODY]
#1053770
08/16/11 12:20 AM
08/16/11 12:20 AM
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Joined: Jan 2003
Posts: 2,697
Renton Wa
topfueldart
master
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master
Joined: Jan 2003
Posts: 2,697
Renton Wa
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Anti Roll Bar in the rear.
11.48 @ 120 with a 1.80 60' 318, stock 1.88 heads, stock 904, Pump Gas, 13 lbs of boost.
9.94 @ 134, 318 on pump gas, 14 lbs w/ Eddies, transbrake 727, 3600 lbs, 3.54 gear and 28's.
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Re: Launch picture question...
[Re: topfueldart]
#1053771
08/16/11 12:30 AM
08/16/11 12:30 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Anti Roll Bar in the rear.
That will take care of it if its going straight now
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Re: Launch picture question...
[Re: MR_P_BODY]
#1053772
08/16/11 12:37 AM
08/16/11 12:37 AM
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Joined: Jan 2003
Posts: 5,485
SoCal
Brian Hafliger
master
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master
Joined: Jan 2003
Posts: 5,485
SoCal
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Have you scaled it? When I scaled mine I was surprised that it was actually pretty good but I had one large battery on each side of the fuel cell in the trunk.
After moving the left side battery over to the right, my car leaves level and high! What a difference it made for such a small change. It was a 108lb. swing moving it from the left to the right. So it makes sense to me that it worked so well.
Also tire pressure in the rear slicks, ladder bar adjustment, shock adjustment, tire circumference from left to right, etc....can all play a part in a crooked launch.
I would scale it first, and make it right then go from there.
Nice Duster!!
Brian
Brian Hafliger
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Re: Launch picture question...
[Re: bumps440]
#1053774
08/16/11 02:34 AM
08/16/11 02:34 AM
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Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
Jeepmon
OP
master
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OP
master
Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
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Quote:
you need just a little more preload on the right rear ladder bar. What kind of bars do you have? are they easily adjustable ? One more flat or 2 on the adjuster will fix that right up.
The car was originally built in the 80's, so I'm not sure what brand bars they are.. but yes, its easy enough to add a flat or two..
Quote:
Does the car go straight on the launch
Thats a difficult question to answer.. most of the time it will go straight, but every once in awhile, it will want to veer off to the right..
Quote:
Anti Roll Bar in the rear.
I was told that anti roll bars do not work on ladder bar set ups.. 
Quote:
Have you scaled it?
My scales moved to Las Vegas...  and I do have two batteries in the trunk, one on each side of the fuel cell.. and I also have mounts for weights in the trunk.. I can easily remove the left battery and put 70 lbs of weight on the right rear..
Quote:
now time to build a motor for it.
Would you believe a trans.. and its coming out this weekend...
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Re: Launch picture question...
[Re: Chris'sBarracuda]
#1053777
08/16/11 08:49 AM
08/16/11 08:49 AM
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Joined: Jan 2003
Posts: 10,000
Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,000
Frostbitefalls MN (Rocky&Bullw...
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I would steer clear of who told you anti roll bars don't work on a ladder bar car. They work very well. Actually they need to be stronger in a ladder setup, because of the short instant center which makes for high leverage for the twisting force. Get a ladderbar car screwed up enough, you can leave with the car on one slick. I have accomplished that!
Here is a pic of my first anti roll, that bent on the first pass. It had a .125 x 1 1/4 tube.
Last edited by gregsdart; 08/16/11 09:06 AM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Launch picture question...
[Re: Jeepmon]
#1053778
08/16/11 09:22 AM
08/16/11 09:22 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Does the car go straight on the launch
Thats a difficult question to answer.. most of the time it will go straight, but every once in awhile, it will want to veer off to the right..
Quote:
Anti Roll Bar in the rear.
I was told that anti roll bars do not work on ladder bar set ups..
I would scale it first but if you think its goes
straight most of the time it should be close...if
the car flexes (which its doing), then yes a anti
roll will correct it but the anti roll is covering
up flex... if it wasnt flexing you wouldnt need a
anti roll(the ladder bars would hold it level)
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Re: Launch picture question...
[Re: Keith Richards]
#1053781
08/16/11 02:03 PM
08/16/11 02:03 PM
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Joined: May 2004
Posts: 3,210
robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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Nice car jeepmom, the top colour looks like mine, is it prowler orange, also is there a reason you run without the hood and does it help at all.
Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36
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Re: Launch picture question...
[Re: deaks]
#1053782
08/16/11 10:42 PM
08/16/11 10:42 PM
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Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
Jeepmon
OP
master
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OP
master
Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
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Quote:
Nice car jeepmom, the top colour looks like mine, is it prowler orange, also is there a reason you run without the hood and does it help at all.
Mick
Earlier this year the hood pulled right thru the dsuz's and went a good 30' into the air.. So running the car without a hood is not done on purpose...
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Re: Launch picture question...
[Re: TC67CUDA]
#1053785
08/18/11 01:48 PM
08/18/11 01:48 PM
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Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
Jeepmon
OP
master
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OP
master
Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
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Quote:
Hey Don my buddy had the same problem and ended up putting an anti roll bar and it straightened his launch right up.I probably should put one on too. BTW what were the rest of the numbers on your 9 sec run? 
Right Lane
Don Riley
Car Number R705
Class PRO
Q/P 0
Dial In 0.00
R/T .006
60' 1.343
330' 3.985
1/8 6.221
MPH 109.600
1000' 8.162
1/4 9.819
MPH 135.62
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Re: Launch picture question...
[Re: Jeepmon]
#1053786
08/18/11 06:07 PM
08/18/11 06:07 PM
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Joined: May 2004
Posts: 3,210
robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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What does it weigh?, is it a stroker?.
Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36
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It looks pretty good to me. Glad to hear you got the 9's out of the way now time to build a motor for it.
