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Old 08-24-2019, 05:59 PM   #1 (permalink)
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Science!

Objective proof that weight reduction improves performance, with significant implications for general engine efficiency! Science!


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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.

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Old 08-24-2019, 07:50 PM   #2 (permalink)
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Been done before :-)

With lots of numbers....
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Where they started...

Last edited by samwichse; 08-24-2019 at 07:56 PM..
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Old 08-25-2019, 11:38 AM   #3 (permalink)
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Actually one of Hot Rod magazine's most famous articles 'Caddy Hack' from 1987.
"The staff took a ’70 Cadillac Coupe De Ville, loaded it with dudes and surfboards to make it weigh 6,780 pounds and ran 17.22 at 80.01 mph at the dragstrip. Then they cut the entire body off the car, reducing weight to 2,900 pounds and improving e.t. to 13.55 at 100.83"
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Old 08-25-2019, 04:51 PM   #4 (permalink)
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Problem with weight reduction is it pretty much has to be designed into the car from the ground up then use the power of mass production and buying in bulk to make it cost effective.
If I wanted to put lighter wheels on my leaf it would cost hundreds of dollars per wheel even after I factor in selling my old ones.
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Old 08-26-2019, 06:20 PM   #5 (permalink)
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I always refer to this guy on the TL forum. He cut 800 lbs from his ride.

https://acurazine.com/forums/3g-tl-p...st-1-a-610974/

If I ever want to go faster, I'll take the motorcycle.
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Old 08-26-2019, 06:31 PM   #6 (permalink)
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Colin Furze did some weight reduction here:
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Old 08-28-2019, 09:15 AM   #7 (permalink)
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Quote:
Originally Posted by Xist View Post
Colin Furze did some weight reduction here:
So this one made me laugh out loud with the surprise victory. You knew they were in trouble when they declared but their front splitter would produce more downforce and help them get traction at launch. How does a splitter create downforce when the car is still? Weight reduction with everything in this particular contest.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.

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Old 08-28-2019, 05:27 PM   #8 (permalink)
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Quote:
Originally Posted by oil pan 4 View Post
Problem with weight reduction is it pretty much has to be designed into the car from the ground up then use the power of mass production and buying in bulk to make it cost effective.
Besides the bean-counters not willing to spend a little more on each new car, which on the other hand could enable selling light-alloy wheels for more as an option, explaining the benefits of weight reduction for the average Joe seems harder than doing so for a commercial operator who would benefit from both the increased fuel efficiency but also from a slight increase to the payload of a vehicle, or in performance-oriented specialty models.

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