It almost sounds like there was no accelerator pump. . .makes for very slow
accel. In Europe in the 50's, 60's, and 70's a side draft vacuum actuated
variable venturi design was very popular as it was much more efficient than
most US designs. . .I'm more into American stuff, but I'm sure there are
others here that could us in on the design.
Generally the IC engine is an air pump; pumping a certain volume of air thru
the system per mile based on cubic inches, transmissions, and final drive,
and considering the 15.7:1 optimum air fuel mixture, you can caculate a rough
sense of what minimum fuel consumption could be ideally, but then there's all
the inefficiencies due to thermodynamics of the heat cycle, friction on all
the moving parts including wheel rolling resistance, aerodynamic losses,
richening of mixtures for cold starting, accleration, etc, etc. . . you can't
get something for nothing.
What it comes down to is that today's fuel injected engines aren't too far
off what technology can do today considering practical performance and use
constraints and cost.
Sure there have been competitions where specially trained drivers and
specially prepped cars have gotten huge gas mileage numbers over relatively
short distances, but nobody on this list could ever stand to drive that way
and the cars wouldn't be practical or safe outside of those tests.
Mark Noakes
Knoxville, TN
58/56 Chevy Suburban 2wd 350 V8 3speed w/OD in progress
59 GMC Suburban V8/Hydramatic looking for a 1/2 ton NAPCO kit and a V8,
destined for straight stock resto
In a message dated 1/26/01 1:36:30 PM, varanus@phoenix.net writes:
<< I think that is what this specific prototype I saw is called. I was
selling a 56 cad a few weeks ago and a potential buyer started to
tell me about this carb design with only 1 moving part. He said it
was designed like 10-15 years ago but the design was purchased
(stolen?) and suppressed by the petro/auto companies because
the carb increased mileage so significantly. >>
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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