Today's Message Index:
----------------------
1. 07:06 AM - Bing 94 carb question (Thom Riddle)
2. 07:49 AM - Re: Bing 94 carb question (j. davis)
3. 08:15 AM - Re: Bing 94 carb question (Thom Riddle)
4. 11:32 AM - 2200A EGT monitoring (Thom Riddle)
5. 12:05 PM - Re: Bing 94 carb question (zeprep251@aol.com)
6. 12:17 PM - Re: Bing 94 carb question (Thom Riddle)
7. 01:20 PM - Re: Re: Bing 94 carb question (zeprep251@aol.com)
8. 01:33 PM - Re: Bing 94 carb question (Thom Riddle)
9. 01:44 PM - Re: Re: Bing 94 carb question (Lynn Matteson)
10. 06:25 PM - Re: Re: Bing 94 carb question (Deb and Peter Zweck)
Message 1
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| Subject: | Bing 94 carb question |
I recently dissasembled, inspected and cleaned the Bing 94 carb on my Jabiru 2200A
#1574. All is well after 240 hours.
Yesterday, I did the same for a customer's carb from Jabiru 2200A #2058. It is
in great shape but I found one anomaly (or so it seems to me) and would like to
find out if any of your Bing 94 carbs have this same thing. In the brass tube
that receives fuel from starting chamber in the float bowl (not the main jet
area but the small diameter chamber at one corner) there is a tiny hole in the
side of this brass tube about 3/16" below the top of the fuel bowl, and thus
above the normal fuel level in the bowl. If this hole is not supposed to be
there it could be contributing to the cold start problem he is having by allowing
excess air to be drawn in and less than full rich fuel charge during engine
start.
My question is this: Have any of you seen this tiny hole in the side of the brass
tube that picks up fuel in the start chamber? My Bing 94 does not have this
nor does any Bing 64 carb on which i've worked (lots of them).
I spolke to Pete yesterday about this and he said he has never noticed this but
would be looking at one of his carbs to see. I'd like to hear from any other
Jabiru operators with Bing 94 carbs to see if this tiny hole is a manufacturing
anomaly or "as designed" in the later engines.
I've attached a photo of the carb with the hole I'm asking about.
http://riddletr.googlepages.com/a%26pmechanix
--------
Thom Riddle
Buffalo, NY
Kolb Slingshot SS-021
Jabiru 2200A #1574
Tennessee Prop 64x31
In a country well governed, poverty is something to be ashamed of. In a country
badly governed, wealth is something to be ashamed of.
- Confuscious
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=272443#272443
Attachments:
http://forums.matronics.com//files/bing_94_starting_tube_hole_220.jpg
Message 2
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| Subject: | Re: Bing 94 carb question |
Thom Riddle wrote:
>
>
> My question is this: Have any of you seen this tiny hole in the side of the
> brass tube that picks up fuel in the start chamber? My Bing 94 does not have
> this nor does any Bing 64 carb on which i've worked (lots of them).
Just checked the Bing (guess its a 94...) that came with my 3300a s.n. 1053
It does indeed have the hole as per your pic. Bing is unused/unneeded.
--
Regards, J.
Sonex #325 C-FJNJ, Jabiru 3300a, Prince P-Tip, Aerocarb
restoring the Johnston Special
http://cleco.ca
+-------------------------------------------------------------+
| J. Davis, M.Sc. | (computer science) |
| *NIX consulting, SysAdmin | email: jd at lawsonimaging.ca |
+-------------------------------------------------------------+
and now... Deep Thought #24, by Jack Handy
I don't think I'm alone when I say I'd like to see more and more planets fall
under the ruthless domination of our solar system.
Message 3
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| Subject: | Re: Bing 94 carb question |
J.
Thanks for your quick reply. It is unlikely that this hole is in more than one
carb if it is not intentional, so it is beginning to appear to me that this is
a design change implemented sometime after mine was built.
--------
Thom Riddle
Buffalo, NY
Kolb Slingshot SS-021
Jabiru 2200A #1574
Tennessee Prop 64x31
In a country well governed, poverty is something to be ashamed of. In a country
badly governed, wealth is something to be ashamed of.
- Confuscious
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=272457#272457
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| Subject: | 2200A EGT monitoring |
I have an Grand Rapids Technology EIS 2000 with 4 CHT readings on my Jabiru 2200A
(#1574). I plan to exchange two of these CHTs for two EGTs. This is a pusher
configuration and I'm would like to know which of the four cylinders should
I monitor for Max and Min EGT.
Are any of the four cylinders likely to show a higher or lower EGT than the others
in a pusher configuration?
If there is not a lot of consistency or much difference between max and min, then
it should not make that much difference which ones I monitor.
I may end up drilling holes for EGTs in all four exhaust tubes and monitor them
all selectively with a switch.
Thanks in advance.
--------
Thom Riddle
Buffalo, NY
Kolb Slingshot SS-021
Jabiru 2200A #1574
Tennessee Prop 64x31
In a country well governed, poverty is something to be ashamed of. In a country
badly governed, wealth is something to be ashamed of.
- Confuscious
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=272469#272469
Message 5
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| Subject: | Re: Bing 94 carb question |
Thom,
Looks like the bottom of the tube has had a taper machined on it,like you
would do to assist pressing it into the carb body.
G.Aman
-----Original Message-----
From: Thom Riddle <riddletr@gmail.com>
Sent: Thu, Nov 12, 2009 10:05 am
Subject: JabiruEngine-List: Bing 94 carb question
>
I recently dissasembled, inspected and cleaned the Bing 94 carb on my Jabi
ru
2200A #1574. All is well after 240 hours.
Yesterday, I did the same for a customer's carb from Jabiru 2200A #2058.
It is
in great shape but I found one anomaly (or so it seems to me) and would li
ke to
find out if any of your Bing 94 carbs have this same thing. In the brass
tube
that receives fuel from starting chamber in the float bowl (not the main
jet
area but the small diameter chamber at one corner) there is a tiny hole in
the
side of this brass tube about 3/16" below the top of the fuel bowl, and th
us
above the normal fuel level in the bowl. If this hole is not supposed to
be
there it could be contributing to the cold start problem he is having by
allowing excess air to be drawn in and less than full rich fuel charge dur
ing
engine start.
My question is this: Have any of you seen this tiny hole in the side of th
e
brass tube that picks up fuel in the start chamber? My Bing 94 does not ha
ve
this nor does any Bing 64 carb on which i've worked (lots of them).
I spolke to Pete yesterday about this and he said he has never noticed thi
s but
would be looking at one of his carbs to see. I'd like to hear from any oth
er
Jabiru operators with Bing 94 carbs to see if this tiny hole is a manufact
uring
anomaly or "as designed" in the later engines.
I've attached a photo of the carb with the hole I'm asking about.
http://riddletr.googlepages.com/a%26pmechanix
--------
Thom Riddle
Buffalo, NY
Kolb Slingshot SS-021
Jabiru 2200A #1574
Tennessee Prop 64x31
In a country well governed, poverty is something to be ashamed of. In a co
untry
badly governed, wealth is something to be ashamed of.
- Confuscious
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=272443#272443
Attachments:
http://forums.matronics.com//files/bing_94_starting_tube_hole_220.jpg
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Message 6
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| Subject: | Re: Bing 94 carb question |
Yes, Gary. I noticed that too. My guess is they make both ends tapered so that
it does not matter which end is pickup by the robot that presses the other end
into the base of the carb. Nothing is made by hand anymore.... other than our
airplanes :-).
--------
Thom Riddle
Buffalo, NY
Kolb Slingshot SS-021
Jabiru 2200A #1574
Tennessee Prop 64x31
In a country well governed, poverty is something to be ashamed of. In a country
badly governed, wealth is something to be ashamed of.
- Confuscious
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=272482#272482
Message 7
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| Subject: | Re: Bing 94 carb question |
Just thought the hole would be below the float level if it were reversed.
-----Original Message-----
From: Thom Riddle <riddletr@gmail.com>
Sent: Thu, Nov 12, 2009 3:16 pm
Subject: JabiruEngine-List: Re: Bing 94 carb question
>
Yes, Gary. I noticed that too. My guess is they make both ends tapered so
that
it does not matter which end is pickup by the robot that presses the other
end
into the base of the carb. Nothing is made by hand anymore.... other than
our
airplanes :-).
--------
Thom Riddle
Buffalo, NY
Kolb Slingshot SS-021
Jabiru 2200A #1574
Tennessee Prop 64x31
In a country well governed, poverty is something to be ashamed of. In a co
untry
badly governed, wealth is something to be ashamed of.
- Confuscious
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=272482#272482
========================
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========================
===========
========================
===========
========================
===========
Message 8
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| Subject: | Re: Bing 94 carb question |
Now that I know that this one carb is not the only one with this hole, I must assume
that it is there by design and performs some desirable function. Since it
is above the fuel level its purpose must be to allow some air to be drawn in
along with the fuel in the starting chamber, in effect either leaning it somewhat
or perhaps it helps to aerate or atomize it a bit. Only the Bing engineers
will know the real reason it is there. My thoughts are pure speculation.
--------
Thom Riddle
Buffalo, NY
Kolb Slingshot SS-021
Jabiru 2200A #1574
Tennessee Prop 64x31
"Rules are for the guidance of wise men and the obedience of fools."
- Pablo Mason
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=272495#272495
Message 9
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| Subject: | Re: Bing 94 carb question |
The Bing that was once on my engine (#2062) also has this hole, for
what it's worth.
Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, #2062, 814.7 hrs
Countdown to 1000 hrs~185 to go
Sensenich 62"x46" Wood prop
Electroair direct-fire ignition system
Rotec TBI-40 injection
Status: flying (and learning)
do not archive
On Nov 12, 2009, at 4:33 PM, Thom Riddle wrote:
> <riddletr@gmail.com>
>
> Now that I know that this one carb is not the only one with this
> hole, I must assume that it is there by design and performs some
> desirable function. Since it is above the fuel level its purpose
> must be to allow some air to be drawn in along with the fuel in the
> starting chamber, in effect either leaning it somewhat or perhaps
> it helps to aerate or atomize it a bit. Only the Bing engineers
> will know the real reason it is there. My thoughts are pure
> speculation.
>
> --------
> Thom Riddle
> Buffalo, NY
> Kolb Slingshot SS-021
> Jabiru 2200A #1574
> Tennessee Prop 64x31
>
> "Rules are for the guidance of wise men and the obedience of
> fools."
> - Pablo Mason
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=272495#272495
>
>
Message 10
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| Subject: | Re: Bing 94 carb question |
I have seen these holes above fuel level on many carbs and yes, it is to
aerate the fuel to assist in vaporisation.
Cheers,
Peter
On 13/11/09 08:33, Thom Riddle wrote:
> --> JabiruEngine-List message posted by: "Thom Riddle"<riddletr@gmail.com>
>
> Now that I know that this one carb is not the only one with this hole, I must
assume that it is there by design and performs some desirable function. Since
it is above the fuel level its purpose must be to allow some air to be drawn
in along with the fuel in the starting chamber, in effect either leaning it somewhat
or perhaps it helps to aerate or atomize it a bit. Only the Bing engineers
will know the real reason it is there. My thoughts are pure speculation.
>
> --------
> Thom Riddle
> Buffalo, NY
> Kolb Slingshot SS-021
> Jabiru 2200A #1574
> Tennessee Prop 64x31
>
> "Rules are for the guidance of wise men and the obedience of fools."
> - Pablo Mason
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=272495#272495
>
>
>
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