Vehicle Weights

TBULL

TBULL

Member # 010
GCC Member
Location
House Springs
First Name
Dan
Last Name
Turnbull
Please post ALL your specifics here on your vehicle weights. I'll be providing a spreadsheet at the next meeting with all the data I have. For those of you who want, I'll send out an email with the spread sheet atttached.

Here is Tim's infomation I copied from his thread:

Engine - 460 BBF
Factory Five Roadster MKII
Fuel Load - 1/4 tank
Total weight w/Driver - 2812

Front Total - 1313 - 46.7%
Rear Total - 1498 - 53.2%

Right Front - 621 - 22%
Left Front - 693 - 24.6%

Right Rear - 746 - 26.5%
Left Rear - 752 - 26.7%

Right Side Total - 1367 - 48.5%
Left Side Total - 1445 - 51.3%


Here's Mine:
Engine - Supercharged 302
Factory Five Roadster MKII
Fuel Load - Full tank 17 Gal
Total weight w/Driver - 2774

Front Total - 1186 - 42.7%
Rear Total - 1589 - 57.2%

Right Front - 574 - 20.6%
Left Front - 613 - 22.0%

Right Rear - 745 - 26.8%
Left Rear - 839 -30.2%

Right Side Total - 1316 - 47.5%
Left Side Total - 1454 - 52.4%
 
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Here is the Coupe's data. Thanks again for the weigh session!

Engine - 302 Carbed, w/Heat + A/C, power steering, Iron heads
Factory Five Coupe #340 (aka MK II)
Fuel Load - 1/3 tank
Total weight w/Driver - 2613

Front Total - 1190 - 45.5%
Rear Total - 1423 - 54.5%

Right Front - 594 - 22.7%
Left Front - 597 - 22.8%

Right Rear - 672 - 25.7%
Left Rear - 752 - 28.7%

Right Side Total - 1265 - 48.4%
Left Side Total - 1348 - 51.6%
 
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Superformance MKIII #2338

Ford 392ci w/ TKO500

Total weight with 235# driver, 7/8 full tank (15gal), 35# misc in the trunk = 2985

Right side 1420 or 47.5%
Left side 1565 or 52.4%

Right front 628 or 21.0%
Right rear 790 or 26.5%

Front 1308 or 43.8%
Rear 1674 or 56.0%

Left front 681 or 22.8%
Left rear 882 or 29.5%

When I first purchased 2338 in May 2006 I weighted it at a Cat scale with full tank of fuel (17 gal), empty trunk and no driver = 2645. Since then I have added about 30# to 40# of weight to the car (rt roll bar, puke tank, etc.). I believe the Cat scale may have been a little off (2%=53#) or perhaps the car is on the same diet as the owner.
 
Paul - he does bring up a good point. Were the scale pads tested with a known weight? Is it accurate?
 
I believe that's what he and Tom did with the fork lift. Calibrate the pads. of course, I could be wrong.:rolleyes:
 
Mark,
Paul brought the scales to my warehouse 3 different times to calibrate and we used a 679 lb. cabinet to simulate approx. 1/4 the weight of our cars which would be 2,716 lbs. so the estimate was not far off.

I forgot to bring my sheet again for full details but my car weighed 2,354 lbs. with 1/2 tank of gas. I weighed 194 with full pockets when I went to the Doctor last week so I'm at 2,548 lbs. total with driver and standard (always in there) junk in the trunk.
 
OK, I remembered to bring my sheet. Here's the weights


Engine - Supercharged 308
Factory Five Roadster MKI
Fuel Load - Half tank
Total weight without/Driver - 2354

Front Total - 1116 - 47.3%
Rear Total - 1238 - 52.6%

Right Front - 610 - 25.9%
Left Front - 506 - 21.4%

Right Rear - 584 - 24.7%
Left Rear - 654 -27.7%

Right Side Total - 1194 - 50.7%
Left Side Total - 1160 - 49.2%
 
Thanks Tom. With both of our cars being the same model and both having SC 308's then that gae me a good comaprison. My car weighed in at 420 more than yours without you. If you subtract out my weight( ahem) and the weight of the amp, 1/2 tanks of gas, the additional steel in the back for the dropped truck and the additional metal weght for the different dash, then ours are fairly close. I wonder since you have 15" rims and i have 17" rims from the same supplier, if mine are heavier. That would bring them even closer.your's is pretty evenly balanced too without you in it. I definitely think I'm going to have a day at my house where I play with the cross weights and try to move a couple of things arouns to help.

Come on guys with the additional data. Please enter your stats and I'll compile them.
 
Calibration

As Tom said, the scale was calibrated at 679 lbs, right in the area we are testing the vehicles. The scale set has a 1/2% tolerance but the weight isn't what is important, it is the percentage - the comparison of one corner to another.

With that in mind, if the scale was off 200lbs, it still wouldn't matter the percentage of a given corner would still come out the same.

Weight really only figures for bragging rights. The one who is closest to 50/50 or better yet, 25/25/25/25 is the king of the hill.

For those interested in playing, I spoke to QA1 about thread pitch on the coil-overs. They use an 8 pitch thread so one turn equals 1/8 of your spring rate (ie 500lb spring, one turn would equal 62 1/2 lbs) But remember, that is assuming your coil-over is 90 degrees to the control arm. If it is 15 degrees tilted (typical), one turn would then equate to about 60#

If you read the article, you don't want to make all the correction on one corner. If you needed to move 50#, you would adjust all four corners around 1/4 turn each; two of them tighter and two of them looser. By doing it this way, the weight balance gets closer and your ride height only changes around .030 in each corner - not noticeable.


My 2c

Paul
 
Thanks Paul. I happen to have QA1 in the back. That is exactly what I was going to do. Start playing and see how close I could get to the magical number with me in the car. This time though I'll weigh it with the half tank and all the stuff out of the trunk like it would be on the course. That was a great article by the way.
 
Sorry guys, I didn't mean that I thought your scale was off. The Cat scale that I originally weighed the car on four years ago was at a QT Truck Stop. They are calibrated for 80,000# plus. I am sure that a scale used for those weights could very easily be off when you put a cobra on it. I am impressed by all the effort that you have put into this. I thank you and appreciate all the effort. Next time I will remember to clean out the trunk (jackets, folding chairs, coolers, lead hammer etc.). It might be a good idea if I get out of the car also. Thanks again. Bruce
 
Bruce your fine. According to the article that Paul supplied, the driver should be in the car. Mine was real heavy on the left side for some reason. :rolleyes: I'm going to have to shift a little weight around and try to trim up a little of the excess. Now the car can diet with me! It is amazing the amount of tuning and adjustment that are in our cars, but that's just another reason to love the car. Thanks for posting your numbers.
 
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