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Jimi or others.
I recently installed a carb ice gauge in my coupe. I did not
get what I expected for results. When I start up at say 60F, that's
what it reads. Within 30 seconds it's up to about 68F. As I proceed to
run the engine the heat increases to around 75F. The thing that amazed
me was how much heat the carb heat produced. I can get a reading on
carb
heat of over 150F. In cruise the average reading is around 95F to
100F.
This plane has always suffered from "carb ice" with regular dying
sessions. I think I have solved the problem, but more on that when
I've
got a few more happy hours on it. Now, hears the crux of my problem. I
put the ice probe in place of the bolt that holds the venturi in
place.
This appeared to be the logical place. After getting only higher
temperatures instead the near ice readings I expeced, I talked it over
with a friend, and concluded the probe was not in the correct place.
As
it stands, the probe is right in the middle of the venturi, level with
the fuel inlet nozzle. After reading some aircraft manuals, they talk
about the heat being sucked out of the air by the atomization of the
fuel, and causing a considerable temp drop. I feel where the probe is,
the fuel is not yet atomized, and so the cooling has not yet taken
place. There is a plug between the venturi and the throttle butterfly
valve. It appears that this could be threaded, and the probe
installed.
On after thought, this is most likely the correct place for the probe.
The carb is a Stromberg NA-S3A1 . If any one has any light to shine on
this, I would sure appreciate it.
Thanks Jon Page.
FLAK MAGNET.
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