E3 vs. E9 Weight

HB Chris

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The e3 always gets credited for weighing less than an e9 so today at my friend Rey’s we put both cars on corner scales. The difference was close to 150 pounds but my 73 coupe weighs more than a 72 e9 with its reinforced bumper irons and b35 injection/manifolds plus I had about 3 gallons more fuel than the 72 Bavaria so call it roughly 100lbs lighter than a coupe. Still pretty close. And I was surprised that my coupe was almost perfectly corner weighted.
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With the battery, steering box, spare tire, all on the left side of the cars, I would expect both LF and LR to be heavier than RF and RR. What is counterbalancing these items on both ends of the E9 and especially the rear of the E3?
 
Well, engine leans towards passenger side and gas tank holds 18g at 8lbs/gal.
The engine and accessories are pretty much the same in both cars. I'd expect the front R to L difference to be about the same with both cars, but the E9 is equal R to L and the E3 is 65 pounds heavier on the left.

Good point on the gas tank countering the spare, etc, but the E9 had 3 more gallons of gas (18 pounds) than the E3 but the E3 was heavier in the RR than the LR compared to the E9. The rear weight difference R to L between the cars was the opposite of what I would expect.

They weighed what they weighed, I just can't figure out why.
 
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Does anyone know how accurate total vehicle weight is with corner scales? Obviously they all talk to each other but the concept makes my brain hurt a little. Im not good with technology. :D
 
Does anyone know how accurate total vehicle weight is with corner scales? Obviously they all talk to each other but the concept makes my brain hurt a little. Im not good with technology. :D
I don't know that they have to talk to each other so much as report their measurements to a central point - in this case the 1 Weight unit with the graphics that look left over from a run of pinball machines in the early 90s. But yes, that's a good question. Seems like each scale would be measuring at least some weight that was also being sensed by another scale.
 
I don't know that they have to talk to each other so much as report their measurements to a central point - in this case the 1 Weight unit with the graphics that look left over from a run of pinball machines in the early 90s. But yes, that's a good question. Seems like each scale would be measuring at least some weight that was also being sensed by another scale.

Yeah you paraphrased what I meant well. It’s a curiousity of mine for sure. I wonder if you can rent these anywhere. I can throw all of my CSL bits into the car and see what it weighs. :D
 
Yeah you paraphrased what I meant well. It’s a curiousity of mine for sure. I wonder if you can rent these anywhere. I can throw all of my CSL bits into the car and see what it weighs. :D
Here in Oregon we have some small roadside weight stations that are easily accessible. Often times the scales are left on even when they aren't in use. Easy way to find out what your car weighs as there's a digital readout that points right at you. Probably wouldn't work with yours though as I don't think it's mobile?
 
Does anyone know how accurate total vehicle weight is with corner scales? Obviously they all talk to each other but the concept makes my brain hurt a little. Im not good with technology. :D
The location of the center of gravity of the car relative to the four wheels determines what each scale measures. As long as each corner scale is accurate the sum has to add up to the total weight in a static situation. If it didn’t the car would be moving. Weight equals mass times acceleration. When an object is at rest the acceleration it is experiencing is gravity or one g. Corner weights are constantly shifting while driving because all the different accelerations taking place in addition to gravity.
 
They weighed what they weighed, I just can't figure out why.
I've never found much use for Ockham's Razor. It only has one blade after all. Who can even think about shaving without a minimum of four? But in light of this rejection of the simplest explanation, here is your answer:

The original owner of this particular E3 just happened to be a narcotraficante who lived in the Baja peninsula. He had titled and registered the car in California mainly because he frequently traveled north of the border to visit his mistress. She was a US citizen who lived in El Cajon, but the location is neither here nor there.

One day, after having heard that he was going to leave his wife any day now (for at least the 100th time), his girlfriend decided she'd had enough. She drove across the border in the E3, which didn't raise any suspicions because of the local registration. After a few weeks she proceeded to, in essence, petition for custody of the vehicle. Her attorney argued that she was entitled to the car on the basis of her long-standing relationship with the owner. The judge was sympathetic to this line of reasoning and awarded the title to the ex-girlfriend. This case would come to serve as a minor precedent in the famous "palimony" case that was to come a few years later.

Having received the title in her name, the ex decided to sell the E3 out of a mixture of spite and needing some cash. She didn't have too much trouble finding a buyer and the sale was quickly made. But there was something special about this car that neither the seller nor the buyer was aware of: the PO had fabricated secret compartments in the car. One was located in the left front fender and the other was in the right rear wrapping around the gas tank. Not only did the vehicle have these secret compartments, but they happened to be filled with about 30 and 10 kilos of coke respectively.

I'd suggest Rey make like a suspicious border crossing agent and disassemble that car ASAP. There might be an early retirement hidden away in there!
 
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That's where your story comes off the tracks. It is, afterall, an E3.

;)
You have a point there, but remember - this was the mid-70s. I can hear that E3 calling out to me from down the road in Albany though, so clearly I'm susceptible to their siren song. That's why I'm tying myself to the mast and stuffing wax in my dog's ears. He really likes riding in the E9. Just think how thrilled he'd be to have all that extra room and his very own door in the back (although I think he'd complain a lot about the b-pillar).
 
The original owner of this particular E3 just happened to be a narcotraficante who lived in the Baja peninsula
Or it could have been a Baader-Meinhoff Gang getaway car.

 
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