What beetle had gravity feed? Every one I ever saw/owned/worked on
needed the fuel pump as the tank was at about the same level as the
carb and roughly 8 feet ahead of it. A front mounted pump pushing the
fuel would have reduced the tendancy for the system to vapour lock,
which my '49 did all too regularly in warm weather (and there was
seldom anything OTHER than warm weather in Zambia) running on the
optimistically 70 something octane regular leaded fuel available in
the early seventies.
Now a Model "T" ford was gravity feed. I believe the model "A" was
too. My 1928 Chevy National had a pump that drew the fuel from the
rear mounted tank by engine vacuum, and then fed it from the #48 juice
can sized pump reservoir to the carb by gravity.
The early Fords would occaisionally run out of gas going up a hill, so
you needed to BACK up steep hills. It also helped that reverse was
geared lower than 1st.
On Sun, 31 Oct 2004 01:56:46 -0400, email@example.com
If I recall correctly quite a few with the gas heaters used that
system for the heaters. But I wouldn't doubt but that there's
regional differences & my memory may be cloudy as virtually all
original beetle's in this area have returned to mother nature many
many years ago.
I'm not sure what you saw, but that wasn't a gas heater. Gas heaters were
mounted inside and parallel to the left front quarter panel, under the front
deck lid. They were/are roughly the shape and size of an old Electolux
Personally thought it was a
Actually the heaters were ok but the defrosters were horrible. Add a gas
heater and you could almost cook a roast in one.:-)
Btw, I still have two, a '62 sunroof and a '69 vert.
wouldn't the arcing be only where the actual motor assembly would be?
could this not be a sealed unit? Would you even want gas in there? I
would think gas does a poor job of lubrication - you'd have some kind of
grease in the actual motor assembly, wouldn't you?
the gears that pump the gasoline won't be arcing...
fwiw, my fish tank pump uses a sealed pump assy with a magnetic drive
assembly - no chance of water touching the electrical parts.
Hey hey hey! One question at a time! 8^)
Actually, the commutation (brushes) are in the fuel that is flowing thru
the pump. The motor armature, magnets, pumping elements, and commutator
are in the same compartment swimmimg/spinning in the fuel.
Nope. The "bearings" in the ones I worked with (supplied to GM and
Ford) were simply holes molded into the plastic end caps of the motors -
again - in fuel. That is typical of the modern automotive fuel pump.
One reason fuel pumps can become noisy is that those plastic bushings
wear (actually, usually the metal shafts wear a lot faster than the
plastic due to abrassive glass fibers in the plastic) and the armature
starts rattling around.
No - but there are brushes.
Magnetic drives are a great way of eliminating rotating seals, but that
magnetic drive wouldn't transmit the torque needed to develop 60-90 psi.
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