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Old 09-12-05, 01:57 AM   #26
SteveRogers
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Quote:
Originally Posted by DannoXYZ
"I don't know how much those engines weigh but we could say 500lbs (They go in motorcycles, this is probably way over the actual weight)."

Stock Busa motor weighs about 175lbs... Add about 50-lbs for the extra plumbing of turbos.
I miss my Busa....
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Old 09-12-05, 09:02 AM   #27
JBehrmann
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Quote:
Originally Posted by edp773
My 1985 Honda CRX HI got 51 MPG. It used less gas than my Honda motorcycle. The motorcycle only got 44 MPG. Some impressive technology for 1985.
The US hit a fuel efficiency peak in the 80s for overall car production. I'd like to see us get back there.
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Old 09-12-05, 01:43 PM   #28
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I have always wondered why cars weigh so much. Then, recently, I read an article about how cars in the US have been getting heavier and heavier in the past 10 years. Consumers want a quiet, smooth ride; they equate this with quality. The cheapest way for designers to satisfy this is with big wheels and heavy bodies. As a result, 30mpg is considered good gas mileage these days.

Motorcycles have been getting lighter and lighter, as more motorcycle buyers are looking for sport performance. Maybe with the high gas prices, we will start seeing lighter cars based on the same technology.

I recently got a dent in the hood of my car, and I looked on the internet to find a replacement. The only hood I could find was a carbon fiber "performance" hood that cost over 500 dollars (ha), and claimed to be 40 lbs lighter than the stock hood. FORTY POUNDS? Why the heck do cars weigh so much?
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Old 09-12-05, 03:34 PM   #29
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Cost... in materials, in design time, in engineering... You can build a car with pervasive use of carbon-fibre/aluminium/titanium and have it be 1/2 the weight of current cars, with similar impact-safety and better performance and gas-mileage. But it will cost $200k and the ride won't be quite as smooth or nice as the current 4000lb tanks. It's all market-driven, the manufacturers are building what the people want... cheap tanks...
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Old 09-12-05, 03:40 PM   #30
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Originally Posted by same time
I have always wondered why cars weigh so much. Then, recently, I read an article about how cars in the US have been getting heavier and heavier in the past 10 years.
Another contributing factor is the growing list of safety equipment. Requirements by law for dual airbags for all US spec cars. Stronger bumpers to pass the collisions tests (for example. On my car, the bumper beam is 25lbs heavier than the ones sold in Japan). Some cars also have side airbags.

Cars are also loaded up with so many unnecessary toys. Four or more LCD screens, DVD player. SUV's and trucks are moving from 16" rims to 20-24" rims. All they're missing is the kitchen sink.
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Old 09-12-05, 08:51 PM   #31
SteveRogers
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Originally Posted by Cyclon
Another contributing factor is the growing list of safety equipment. Requirements by law for dual airbags for all US spec cars. Stronger bumpers to pass the collisions tests (for example. On my car, the bumper beam is 25lbs heavier than the ones sold in Japan). Some cars also have side airbags.

Cars are also loaded up with so many unnecessary toys. Four or more LCD screens, DVD player. SUV's and trucks are moving from 16" rims to 20-24" rims. All they're missing is the kitchen sink.
Hmmmm....define "unnecessary". If it's what the people want, then is it "unnecessary"? Are padded bike shorts "unnecessary"? Are multiple chain-rings "unnecessary"? Is a DVD player in the mini-van "unnecessary"? Sure. They are all unnecessary. But are they convenient? Yes. Do those who buy them find value in them? Absolutely.

Just because you don't value the DVD player in the vehicle doesn't make it any more "unnecessary" than a non-cyclist's view of bicycle shorts. And really, are you proposing that we get rid of airbags for the fuel-consumption benefits? Please.... C'mon, how much do LCD screens weigh? My Honda Odyssey has one, and it is AWESOME on long trips with my two toddlers. Do I value it more than a carbon frame for my bike? You betcha.
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