REALLY dumb question

Discussion in 'A boatload of fun' started by wildriv430, Oct 27, 2005.

  1. wildriv430

    wildriv430 low budget gearhead

    hey all, i know this is stupid but im bored and it just popped into my head........has anyone with a solid 69 wildcat 2dr or similar year/model ever weighed their car? the reason i asked is im trying to figure out how much of my old wildcat has rusted away completely. last time i drove the car before it was parked i weighed it in at 4180 pounds without driver and barely a few drops in the gas tank. a book i have on these cars says its supposed to weigh 4313 pounds dry weight, whatever that means.

    could this mean that 133 pounds of metal rusted/fell off? :eek2: The frame and body are totally gone, espessially behind the rear wheels, but thats allotta steel!
     
  2. Camilla

    Camilla Well-Known Member

    I'll bet your nice modern steel belted radials are lighter than the original bias ply tires. That might account for some of the weight loss...
     
  3. wildriv430

    wildriv430 low budget gearhead

    thats very possible.........i never considered that. still they wouldnt account for more than maybe 20 pounds between the 4 id say. who knows, maybe the earths gravitational pull has gotten weaker since 1969 :bglasses:
     
  4. Phil Racicot

    Phil Racicot Well-Known Member

    I recently weighted my 65 and I was surprised to see it weighted over 4600 lbs.
    Of course, the tank wasn't empty and there were a few things in the trunk but nothing heavy. Of course, I wasn't in the car, that would have explained the overweight situation! This car has no A/C but it does have some Bondo on the body, which probably explains... I have a NOS front fender to be installed on it as soon as I have some time and I guess it will make the car a bit lighter!
     
  5. 65WILDKAT

    65WILDKAT A PROUD FATHER OF THREE!

    Depends

    I Think that the l.b.s. depends on some of the options also! With my Mother in law in the car it goes well over the 5000 lbs mark. :ball: :laugh:
    Don
    P.S. I LOVE MY MOTHER IN-LAW She is a great woman!
     
  6. Go Buick Go

    Go Buick Go Woot!

    That's not a dumb question...it's actually pretty funny! :beer Makes me wish I had weighed my old car somehow...
     
  7. JR Wills

    JR Wills Well-Known Member

    Interesting Post :Smarty:
    I just went to find the Shipping weight "Advertised" for the GS.
    Per Information I have, 72 GS 455 had a shipping weight of 3461.
    I know mine weighed in @ 3760 with 1/2 tank of fuel, and a Much thinner "ME" at 3760 @ Ennis, TX a number of years ago.
    I believe the Shipping weight was based on a BARE Bones car, NO options, and was used for shipping so as to get the lower price on transportation, as None of the cars were shipped totally Dry.
    Comparing the variations, and basing it on the same body style, this is what I came up with for 1972:
    43337 Skylark 350 Base 3442
    44437 Skylark Custom 3487
    43437 GS 350/GS455 3487*
    * no difference between the 2 cars. (right)
    No Options are Considered, all are 2 dr HDTPS, so I think that a base line was set, then used as a flat line for charges, actual weight depended on the additional options or Deletions that were available on the specific car.
     
  8. wildriv430

    wildriv430 low budget gearhead

    wouldn't the GS455 weigh considerably more than the GS350, somewhere in the neighborhood of 200 pounds? :puzzled:
     
  9. doc

    doc Well-Known Member

    dry wt

    Dry wt means without coolant in the radiator, oil in the trans, oil in the eng, fuel in the tank, washer fluid. brake fluid, oil in the diff. this all adds up when lumped together. then add sound deadner, and under coating and you can come up with a lot of weight that aint "car".
    Shipping wt. means "as Shipped" Includes all of the above along with books , papers, spare tire, jack, ect. If I remember right. :laugh:
     
  10. Camilla

    Camilla Well-Known Member

    You can get an approximate weight of your car by shoving a piece of thin cardboard under the front, rear, and side edges of one tire and measuring the width and length of the footprint of one tire. Multiply length and width together and you get the area in square inches. Now take the tire pressue, and multiply that number (pounds per square inch) by the square inches. That will tell you how many pounds are supported by that tire. Now repeat for all the tires and add up all 4 numbers. That will be the weight of the car. The more precise you are in measuring, the closer the weight will be...
     
  11. wildcat4

    wildcat4 Well-Known Member

    Wow Ron,
    This actually works? Sounds cool. :TU:
    Does it matter what kind or brand of tire, like would a Bias-ply hold a different pattern than radials? Seems like they would be different.
    :Do No:
    I want to try this tonight and see.
     
  12. Camilla

    Camilla Well-Known Member

    PSI measures pounds per square inch supported by that tire. Doesn't matter what kind of tire you use. Of course, if it's completely flat, the weight is on the rim, so you can't measure it. And your tire footprint isn't a perfect rectangle, so that might throw things off just a bit. Worth a try for the heck of it.
     
  13. 2manybuicks

    2manybuicks Founders Club Member

    Uh, but you'lld have to use the actual contact area, not the rectangular area of contact, due to all the grooves in the tire treads. Coupled with the inherit inaccuracy of most tire-type pressure gauges (+/- 2 to 5 PSI in 30 PSI), I would really doubt that this method would give you any results that are in any way reliable. An accuracy of +/- 1,000 lbs is probably the best you would get.

    -- Steve
     
  14. 2manybuicks

    2manybuicks Founders Club Member

    And hey, suppose I've got a tire in my driveway with 30 PSI in it. The contact area does not decrease by half if I up the pressure to 60 PSI.

    That is frigging nonsense -- the shape stays essentailly the same despite doubling the pressure, no matter waht the supported weight is. Trying to link contact area with tire pressure in a 1:1 ratio with supported weight is, in the words of Mike Tyson, "ludricrisp".

    -- Steve
     
  15. Camilla

    Camilla Well-Known Member

    The area making contact with the ground does indeed change with the air pressure. That's why tires go flat, y'know? Tell you what, you pump your tires up to 60 psi, and I'll try mine at 35 and let's compare notes. Only one way to see if it works, just try it. Besides, the original question was posed by someone with too much time on his hands...
     
  16. Camilla

    Camilla Well-Known Member

    Forgot to mention, we actually tried this in my high school science class years ago. Our calculation on our teacher's Plymouth Reliant was within 200 pounds of the actual weight, not bad for such crude methods. Maybe it only works on K cars... :Smarty:
     
  17. Bad Boattail

    Bad Boattail Guest

    Here in the Netherlands the weight of the car is in your car papers.
    Road tax is depending on the weight of the car.
     
  18. Bad Boattail

    Bad Boattail Guest

    Shipping weight for a 1969 model year Wildcat 2 drs coupe is 1845 kilo.

    Shipping weight for a 1969 model year Wildcat Custom 2 drs coupe is 1853 kilo.

    So you're not far off with 4180 pounds.
     

Share This Page