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Old 06-20-2011, 10:50 AM   #51 (permalink)
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A carb helps control cumbustion. It can't help the drivetrain, aero, weight, hills or technique. There's no such thing as a 200 mpg carb because the concept itself is faulty. A "super efficient" carb I'll believe, but one with a specific mileage claim is a fake because it credits all the great mileage to one part of the combustion process and not to the rest of the picture.

I'll believe a lot of things. I even believe that there's a new, highly efficient carb design out there, but I can't bring myself to believe that swapping out one bit of hardware will radically increase mpgs.

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Transmission type Efficiency
Manual neutral engine off.100% @MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%

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Old 06-20-2011, 11:13 AM   #52 (permalink)
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Can a 200 MPG Carb exist? Yes. Can a 200 MPG DROP-IN Carb exist(meaning can be install on any car)? No, for the reasons Fat Charlie mentioned. If you build the engine and car around the carb(which would be hard enough as it is) it can be done, but there is no way you can build a carb that can be installed on any engine to magically make it get 200 MPG, you'd be hard pressed to make a carb that could be installed on any engine period.
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Old 06-20-2011, 12:48 PM   #53 (permalink)
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I'm sure you guys are just joking about the origins of crude oil whether it came from this dinosaur or that...I once saw where 98% of the oil is from dead Algae. This has always made me wonder why we don't utilize the live ones for their oil. No doubt PETA would put up a huge resistance (People for the Ethical Treatment of Algae), but this energy resource could be gangbusters.
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Old 06-20-2011, 01:20 PM   #54 (permalink)
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Kinda like this?
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Old 06-20-2011, 05:27 PM   #55 (permalink)
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found my errors.
200mpg is .005 mpg, 180 watt-hours per mile. whatever. I don't know much about energy units, but that sounds like an awful small amount of energy to move a several hundred pound object.
Don't think a special carb would help a car much, especially considering what Fat Charlie said.
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Old 06-20-2011, 06:28 PM   #56 (permalink)
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Quote:
Originally Posted by Joenavy85 View Post
... If you build the engine and car around the carb(which would be hard enough as it is) it can be done...
It has been done. The better "Shell Challenge" cars did beat that figure. From what I can tell, they took a stock car of some type and then totally gutted it, swapping out just about everything mechanical in it. One such was a Fiat 600, which was selected because it was lightweight and inexpensive. The car was rebuilt only to run the Challenge, and was totally unsuited for the street. (I don't think it even had a reverse gear.)

They proceeded to drive it at something like a maximum of 35 MPH for many many hours, and evidently achieved well over 200 MPG.


That doesn't make the carb that was fitted to it a "200 MPG carburetor", though. It makes that particular car a 200 MPG car under very specific circumstances and keeping a rather large set of compromises in mind.

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Old 06-20-2011, 08:53 PM   #57 (permalink)
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DEFINITELY EVERYTHING is POSSIBLE
If that were true ... it must therefore also be possible that you are wrong ... as that concept falls into the all inclusive category of "EVERYTHING"...

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As I have already stated the naysayers would be out in droves to dispute claims of 200 mpg.
correction ... they are not out to dispute claims of 200 MPG ... just some more specific claims about some fictional methods of achieving 200 MPG.

I'll take the real world tested 2,564.8 MPG Prototype Class and 646.7 MPG Urban Concept Class from what science has achieved ... science is producing real world products that perform better than your claimed 200 MPG ... even if you could manage to get 200 MPG ... and you managed to have it independently verified by a 3rd party like shell did in the ECO Marathon ... 200 MPG is still inferior to the 646 MPG that the science you reject has already achieved.

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Going off of how much energy is in a gallon of gas, the most mpg one can possibly achieve would be 80 mpg.
Thanks for finding your own error ... You beat me to posting it.


The only thing that limits the upper end maximum MPG from the finite amount of energy per gallon is how low you can get your energy needs for a given vehicle to move ... See above ECO Marathon examples.
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Old 03-29-2012, 08:22 AM   #58 (permalink)
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All I want to say here is...who cares if a home built carb doesn't produce 200mpg as claimed?
Hell if it improved my mileage by any significant amount I'd be happy.
Who likes paying out anymore than they have to for gas?
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Old 03-29-2012, 09:05 AM   #59 (permalink)
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Quote:
All I want to say here is...who cares if a home built carb doesn't produce 200mpg as claimed?
I think I speak for most when I say we (all) care because such a claim is so ludicrous as to be nothing but a lie and a sham and probably as scam as well.

People making/marketing fuel saving gadgets need to get real or get lost.
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Old 03-29-2012, 11:43 AM   #60 (permalink)
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I agree, but the ideas are sometimes sound.
The point I was making was, if they(AS IN THE ONES THAT DO SOME IMPROVING) did some mpg improving what would it matter?
Yes, it still could be far from what is claimed, but when one looks to improve mileage some improvements are better than none...are they not. And fuel to air mixtures in cars even at the best are far from being pushed to the limit.. So there is plenty of room for improvements.

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