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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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 Posted: Mon Sep 01, 2008 1:48 pm Post subject: In Flight Mixture Control |
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> Someone sells a mixture control for Bings...and likely Mikuni's
Herb
Herb:
CPS sold remote main jet adjustment kits back in 1984. I bought one for my
Mikuni mounted Cuyuna. It worked great as long as you remembered where you
adjusted it during the last adjustment. Cuyunas and Mikunis were very
sensitive to over rich conditions. Indications were............the engine
quit immediately. Would run right up to the point it got over rich, then
die, door knob dead.
My idea was to be able to fine tune the main jet at cruise, attempting to
get max power and max fuel economy for my cross country flights.
First unintentional engine out in the US was because of that main jet
adjuster. Had stopped at Tuskegee to get fuel. Went inside to pay for my
fuel. When I got back to the gas pump several men were looking at my US. I
got in, took off on the parking pad, and the engine failed at about 100
feet. Turned back to the ramp to hard and too steep, got into a mush and
smacked Mother Earth pretty hard. Bent some stuff to include my ego. Also
learned the hard way to not try and return to the departure point with a
dead engine at low altitude, especially if you are a very low time fixed
wing pilot with no formal training. Well........no fixed wing training
except what I got out of books. I don't know if one of the men turned the
adjustment knob next to the ignition switch on the left side of the
fuselage by the throttle, or I inadvertently enrichened it. Either way,
result was a bent airplane.
My experimentation with the main jet adjuster resulted in my decision to
remove and sell it to someone else that had to have the capability to adjust
their main jet in flight. I decided that it was not necessary, added to the
work load of the pilot, and was an engine out waiting to happen. I was
depending on a cheap Westach EGT instrument and my ear and feel to help me
keep the engine tuned where I thought it ought to be in flight. Cost me a
lot of heart ache, money and extra work.
If your game is to screw with your engine whether it needs screwing with or
not, you may need, not one, but multiple in flight mixture controllers.
Personally, I don't need one. Flew many hours after the adjuster was gone
and never could justify the expenditure or requirement for it.
Mike Jacober of Birchwood Airport, Alaska, designed an in flight mixture
adjuster for the Bing Carb before he was killed in an aircraft accident
several years ago. Think someone else is selling it now.
The less a pilot has to perform to keep the airplane in the air, the better
job he will do as the pilot. Too easy to get preoccupied with trivial stuff
and forget to fly.
john h - Who once transitioned from pilot to bombadier in flight with a one
man crew. Who's flying the Firestar? ;-(
mkIII
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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herbgh(at)nctc.com
Guest
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| Posted: Mon Sep 01, 2008 4:56 pm Post subject: In Flight Mixture Control |
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My Idea was that the jet needle could be adjusted the limits of the
clip.. and no more... and would have stops at both ends. I think
that the fellow you mentioned designed his mod along those lines.. Herb
At 04:47 PM 9/1/2008, you wrote:
| Quote: |
> Someone sells a mixture control for Bings...and likely Mikuni's
Herb
Herb:
CPS sold remote main jet adjustment kits back in 1984. I bought one
for my Mikuni mounted Cuyuna. It worked great as long as you
remembered where you adjusted it during the last
adjustment. Cuyunas and Mikunis were very sensitive to over rich
conditions. Indications were............the engine quit
immediately. Would run right up to the point it got over rich, then
die, door knob dead.
My idea was to be able to fine tune the main jet at cruise,
attempting to get max power and max fuel economy for my cross country flights.
First unintentional engine out in the US was because of that main
jet adjuster. Had stopped at Tuskegee to get fuel. Went inside to
pay for my fuel. When I got back to the gas pump several men were
looking at my US. I got in, took off on the parking pad, and the
engine failed at about 100 feet. Turned back to the ramp to hard
and too steep, got into a mush and smacked Mother Earth pretty
hard. Bent some stuff to include my ego. Also learned the hard way
to not try and return to the departure point with a dead engine at
low altitude, especially if you are a very low time fixed wing pilot
with no formal training. Well........no fixed wing training except
what I got out of books. I don't know if one of the men turned the
adjustment knob next to the ignition switch on the left side of the
fuselage by the throttle, or I inadvertently enrichened it. Either
way, result was a bent airplane.
My experimentation with the main jet adjuster resulted in my
decision to remove and sell it to someone else that had to have the
capability to adjust their main jet in flight. I decided that it
was not necessary, added to the work load of the pilot, and was an
engine out waiting to happen. I was depending on a cheap Westach
EGT instrument and my ear and feel to help me keep the engine tuned
where I thought it ought to be in flight. Cost me a lot of heart
ache, money and extra work.
If your game is to screw with your engine whether it needs screwing
with or not, you may need, not one, but multiple in flight mixture controllers.
Personally, I don't need one. Flew many hours after the adjuster
was gone and never could justify the expenditure or requirement for it.
Mike Jacober of Birchwood Airport, Alaska, designed an in flight
mixture adjuster for the Bing Carb before he was killed in an
aircraft accident several years ago. Think someone else is selling it now.
The less a pilot has to perform to keep the airplane in the air, the
better job he will do as the pilot. Too easy to get preoccupied
with trivial stuff and forget to fly.
john h - Who once transitioned from pilot to bombadier in flight
with a one man crew. Who's flying the Firestar? ;-(
mkIII
|
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jvanlaak(at)aol.com
Guest
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| Posted: Mon Sep 01, 2008 5:34 pm Post subject: In Flight Mixture Control |
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I have a pair of HAC modified carbs setup for a 582. They are very low time - almost like new. Anyone interested contact me off list.
Jim Van Laak
DNA
--
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ceengland(at)bellsouth.ne
Guest
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| Posted: Mon Sep 01, 2008 6:50 pm Post subject: In Flight Mixture Control |
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John Hauck wrote:
| Quote: |
> Someone sells a mixture control for Bings...and likely Mikuni's
Herb
Herb:
CPS sold remote main jet adjustment kits back in 1984. I bought one
for my Mikuni mounted Cuyuna. It worked great as long as you
remembered where you adjusted it during the last adjustment. Cuyunas
and Mikunis were very sensitive to over rich conditions. Indications
were............the engine quit immediately. Would run right up to
the point it got over rich, then die, door knob dead.
My idea was to be able to fine tune the main jet at cruise, attempting
to get max power and max fuel economy for my cross country flights.
First unintentional engine out in the US was because of that main jet
adjuster. Had stopped at Tuskegee to get fuel. Went inside to pay
for my fuel. When I got back to the gas pump several men were looking
at my US. I got in, took off on the parking pad, and the engine
failed at about 100 feet. Turned back to the ramp to hard and too
steep, got into a mush and smacked Mother Earth pretty hard. Bent
some stuff to include my ego. Also learned the hard way to not try
and return to the departure point with a dead engine at low altitude,
especially if you are a very low time fixed wing pilot with no formal
training. Well........no fixed wing training except what I got out of
books. I don't know if one of the men turned the adjustment knob next
to the ignition switch on the left side of the fuselage by the
throttle, or I inadvertently enrichened it. Either way, result was a
bent airplane.
My experimentation with the main jet adjuster resulted in my decision
to remove and sell it to someone else that had to have the capability
to adjust their main jet in flight. I decided that it was not
necessary, added to the work load of the pilot, and was an engine out
waiting to happen. I was depending on a cheap Westach EGT instrument
and my ear and feel to help me keep the engine tuned where I thought
it ought to be in flight. Cost me a lot of heart ache, money and
extra work.
If your game is to screw with your engine whether it needs screwing
with or not, you may need, not one, but multiple in flight mixture
controllers.
Personally, I don't need one. Flew many hours after the adjuster was
gone and never could justify the expenditure or requirement for it.
Mike Jacober of Birchwood Airport, Alaska, designed an in flight
mixture adjuster for the Bing Carb before he was killed in an aircraft
accident several years ago. Think someone else is selling it now.
The less a pilot has to perform to keep the airplane in the air, the
better job he will do as the pilot. Too easy to get preoccupied with
trivial stuff and forget to fly.
john h - Who once transitioned from pilot to bombadier in flight with
a one man crew. Who's flying the Firestar? ;-(
mkIII
|
At least one of the brands can be leaned by 'pinching off' the air vent
on the fuel bowl with a needle valve. No change to the full-rich
setting; it can only go lean. This is 2nd hand info, but I can try to
get details if anyone wants them. (Friends are using the larger ones on
some high-horsepower alternative engines.)
Charlie
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