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weight distribution #1498905
09/09/13 12:17 PM
09/09/13 12:17 PM
Joined: Jun 2010
Posts: 3,112
LONG ISLAND
fishy340 Offline OP
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fishy340  Offline OP
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Joined: Jun 2010
Posts: 3,112
LONG ISLAND
Ok i got my abody scaled last week and the front total weight of the car equals 53.3%.I never really looked at these post cause my cars pretty much went striaght.Alot more hp in this one and the guy who scaled it..said 1 thing the car will do is go straight.My concern is it going up..lol its got limiters so they'll be real tight to start.So whatta you guys think..good or bad ? Thanks AndyB

Re: weight distribution [Re: fishy340] #1498906
09/09/13 03:45 PM
09/09/13 03:45 PM
Joined: Aug 2003
Posts: 43,163
Bend,OR USA
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Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
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Joined: Aug 2003
Posts: 43,163
Bend,OR USA
I would go run it, my Duster had almost 50% on both ends, 50.3 % front, 49.7 % on the rear with no wheelei bars It would sixty foot in the high 1.30 to low 1.40 on a good track, wheelies where around 6 to 10 inches off the ground for 20 to 40 ft, no big deal I did have the ladder bars in the lowest hole on the front and Koni SPA front shocks, Strange double adjustables on the rear with 4 clicks on extension from soft and 5 or six on compression from full soft As far as the first run be ready to either lift a little on the throttle, not all the way Or use your other foot on the brake to help control the wheelie hieght You can also short shift it you want or need to Way back in the day(mid 1970s) I was told by one of the Chrysler powered Pro Stock racers that they like to see between 54 and 56 % of the cars weight on the rear wheels He said they didn't use a W or stiff sidewall rear tire either back then, revved the motor to 7000+ RPM and let the clutch out


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: weight distribution [Re: fishy340] #1498907
09/09/13 04:12 PM
09/09/13 04:12 PM
Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
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Guitar Jones Offline
Paddle faster! I hear banjo music!
Guitar Jones  Offline
Paddle faster! I hear banjo music!
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Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
Quote:

Ok i got my abody scaled last week and the front total weight of the car equals 53.3%.I never really looked at these post cause my cars pretty much went striaght.Alot more hp in this one and the guy who scaled it..said 1 thing the car will do is go straight.My concern is it going up..lol its got limiters so they'll be real tight to start.So whatta you guys think..good or bad ? Thanks AndyB




Not much info to go on.


"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon!
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
Re: weight distribution [Re: Guitar Jones] #1498908
09/09/13 04:53 PM
09/09/13 04:53 PM
Joined: Jun 2010
Posts: 3,112
LONG ISLAND
fishy340 Offline OP
master
fishy340  Offline OP
master

Joined: Jun 2010
Posts: 3,112
LONG ISLAND
True stock susp car w cal trac and santuffs on all 4 corners.R3 block 220lbs so i see the extra weight..glide and strange 9" and anti-roll bar now.The car 60' 1.35/6 before and is set up now for spray.The converter is tight for the spray and the gears are 3.73.I think the extra weight in the front will help keep it down personally.
I know camaro and stangs like a 52% deal on weight in the front.I guess we'll see..

Re: weight distribution [Re: fishy340] #1498909
09/09/13 05:04 PM
09/09/13 05:04 PM
Joined: Jul 2004
Posts: 19,317
State of confusion
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Thumperdart Offline
I Live Here
Thumperdart  Offline
I Live Here
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Joined: Jul 2004
Posts: 19,317
State of confusion
Quote:

True stock susp car w cal trac and santuffs on all 4 corners.R3 block 220lbs so i see the extra weight..glide and strange 9" and anti-roll bar now.The car 60' 1.35/6 before and is set up now for spray.The converter is tight for the spray and the gears are 3.73.I think the extra weight in the front will help keep it down personally.
I know camaro and stangs like a 52% deal on weight in the front.I guess we'll see..




Ask Bob R. how much weight`s on the nose of the Hemistang..........


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: weight distribution [Re: fishy340] #1498910
09/09/13 06:01 PM
09/09/13 06:01 PM
Joined: Nov 2003
Posts: 1,969
Chandler, AZ
Duner Offline
top fuel
Duner  Offline
top fuel

Joined: Nov 2003
Posts: 1,969
Chandler, AZ
I sure wish I had that issue.

60/40 here.

Re: weight distribution [Re: Duner] #1498911
09/09/13 07:14 PM
09/09/13 07:14 PM
Joined: May 2008
Posts: 1,238
North Cackilacky
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sdaurity Offline
pro stock
sdaurity  Offline
pro stock
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Joined: May 2008
Posts: 1,238
North Cackilacky
Had to be 56% on the nose to work like I wanted. Went 5.16 here.



http://www.youtube.com/watch?v=zuMVU8We4r0


One day I will have something cool here.
Re: weight distribution [Re: sdaurity] #1498912
09/09/13 07:48 PM
09/09/13 07:48 PM
Joined: Jun 2010
Posts: 3,112
LONG ISLAND
fishy340 Offline OP
master
fishy340  Offline OP
master

Joined: Jun 2010
Posts: 3,112
LONG ISLAND
Im a wee bit heavier then u i think.I got on a scale at atco w me in it a yr an 1/2 ago.It said 2860, so for 2 yrs i was in fantasy land lol.I got a dose of reality this time..i mean i took out 50lb in exhaust,alt,column,i got a lithium pro lite and my weld rims and tires 40lb less,all aluminum powerglide.And this thing is a cow!! The one good thing i can tell ya is it must of been close to 3300 and ran really good for an indy headed pumpgas sb.:) 9.58 pumpgas deal.

Re: weight distribution [Re: fishy340] #1498913
09/09/13 11:01 PM
09/09/13 11:01 PM
Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
hemi-itis Offline
I Live Here
hemi-itis  Offline
I Live Here

Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
So when will put a few hits on it??


HEMI-ITIS has no cure.
My condition is fully BLOWN!!
Re: weight distribution [Re: fishy340] #1498914
09/10/13 12:09 AM
09/10/13 12:09 AM
Joined: Aug 2003
Posts: 43,163
Bend,OR USA
C
Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
C

Joined: Aug 2003
Posts: 43,163
Bend,OR USA
Quote:

True stock susp car w cal trac and santuffs on all 4 corners.R3 block 220lbs so i see the extra weight..glide and strange 9" and anti-roll bar now.The car 60' 1.35/6 before and is set up now for spray.The converter is tight for the spray and the gears are 3.73.I think the extra weight in the front will help keep it down personally.
I know camaro and stangs like a 52% deal on weight in the front.I guess we'll see..


Go run that rascal


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: weight distribution [Re: fishy340] #1498915
09/10/13 12:17 AM
09/10/13 12:17 AM
Joined: Oct 2011
Posts: 3,036
bean town ....Ca
W
WHITEDART Offline
master
WHITEDART  Offline
master
W

Joined: Oct 2011
Posts: 3,036
bean town ....Ca
would not worry about it that glide will help you out


In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
Re: weight distribution [Re: Cab_Burge] #1498916
09/10/13 08:03 AM
09/10/13 08:03 AM
Joined: Jun 2010
Posts: 3,112
LONG ISLAND
fishy340 Offline OP
master
fishy340  Offline OP
master

Joined: Jun 2010
Posts: 3,112
LONG ISLAND
Im dying to make some hits,but with this nlr progressive system i gotta bring my friend and tuner..he understands all the data and rampimg that needs to be done.

I really wanna post some good pics when i get it out.IF it runs like it LOOKS....its gonna make magazines i believe.:)

Re: weight distribution [Re: fishy340] #1498917
09/10/13 08:42 AM
09/10/13 08:42 AM
Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline
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gregsdart  Offline
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Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
I found out that going to 53 percent front weight was a positive move for my car, due to the location of the CG.(too high, too little forward ballast). Mine wanted a good hit to the tires to get weight transfer, and once the front is up, the car no longer knows what percent is on the front,cause its all on the back! Sounds kinda dumb and simplistic, but that's what it is. Figure out how hard you can hit the tires and get it out of the gate, and it will fly! With the torque of nitrous, you are probably going to be able to hit the tires as hard as my 528 I would think.
The limiters should be set loose is my idea of the right way to go. By starting dead soft on the front suspension, full travel, you can better figure out the back suspension and how much juice to throw at it at the hit. Then when you start seeing it pull the front too high, you can adjust the front to see what it will tolerate in limiting travel or stiffer shock settings to settle it down to your liking. With a little math and a few facts about the car, you could figure out how much torque can possibly be put to the back axles, and that will give you a rough idea of what the car will do. As an example, if you have enough torque to"dead lift" (no spring help) the front of the car, there is no possible way to keep it on the ground IF the tires bite. It made sense to me when I did a little math.
Example-
Big block with 760 ft lbs torque at 4800 stall plus another 500 ft lbs from a dose of juice would be 1260 x 2.1 converter multiplication or 2646 x trans low gear (1.82?) = 4816 x 3.54 rear ratio = 17,047 ft lbs at the axles, minus 10 percent driveline loss is 15432 ft lbs at the axles. If you have a 30 inch tire, that would be a radius of 15 inch, which reduces the torque -15432/15inch =1022 x 12 inch (for ft lbs)=12274 in torque at the tire surface trying to dead lift that front. At a front weight of 1700 lbs and a wheel base of 108 inches, or 9 feet, you get (9x 1700) a value of 15,300 to dead lift the front of the car. With the help of soft springs to get it moving, and the change of the CG as the front comes up, the car would easily go on the bumper with that 12274 that showed up in the first set of numbers.
With only a 1.82 low gear and a soft 3.54 rear gear, it is still a monster because of the torque of the juice. Could you imagine trying to make that car work with a 2.45 low and a 4.56 out back? Thats close to what I was battling, but without the juice.
I am looking forward to some full track reports, to see how it goes. This will be a whole lot of fun!

Last edited by gregsdart; 09/10/13 09:25 AM.

8..603 156 mph best, 2905 lbs 549, indy 572-13, alky






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