Today's Message Index:
----------------------
1. 03:35 AM - Re: "MAG" Check (James, Clive R)
2. 10:48 AM - Re: "MAG" Check (JohnDRead@AOL.COM)
3. 11:25 AM - Re: "MAG" Check (Jim Crowder)
4. 11:35 AM - Mag Check (BobbyPaulk@comcast.net)
5. 03:48 PM - Re: "MAG" Check (fiveonepw@aol.com)
Message 1
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The Jab engine doesn't drop like a Lycoming when you earth one side.
It's more of a sensation than a drop, on an analogue tach it's only a
quiver on the needle.
Something to do with spark plug positions I imagine. On a big ole gas
guzzler they are a lot further apart.
The carb heat again doesn't do much on the ground, both tests show a
little more clearly in the air.
I usually use 1800 as well to answer your question.
Regards, Clive
-----Original Message-----
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of Ivan
Sent: 08 August 2010 05:19
Subject: Re: JabiruEngine-List: "MAG" Check
The Jab engine manual has all these operating limitation parameters. I
do
my mag check at about 2000RPM and the drop parameters I think are less
than 100RPM drop and less than 100 from side to side. This is from
memory but I know the manual states these figures. I have these figures
printed in my engine run up checklist. I never get a carb heat drop
unless there is some icing in the carburetor. Not exactly sure why but
I think it has something to do with the Bing being set up as "altitude
compensating."
Ivan
Phoenix, AZ
----- Original Message -----
From: "MHerder" <michaelherder@beckgroup.com>
Sent: Saturday, August 07, 2010 8:28 PM
Subject: JabiruEngine-List: "MAG" Check
> <michaelherder@beckgroup.com>
>
> What RPM are you doing your "Mag" Check at? What's a normal drop? I
was
> trying 1800 RPM and am not getting a noticable drop, also not getting
a
> noticeable drop when I kick in the carb heat?
>
> Engine has about .9 hr of ground run time on it and we're still
working
> out some kinks.
>
> I guess we call a "mag" check a coil or orgnition check on a Jab?
>
> I'm using the Grand Rapids EIS and noticed that there are two
sensitivity
> settings on the tach, but I want to get some go no go parameters from
some
> folks.
>
> Thanks
>
> --------
> One Rivet at a Time!
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=307893#307893
>
>
>
Message 2
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Hi Guys;
I recall from the Jabiru installation instructions the carb
heat is always on so there should not be any RPM drop.
do not archive
Regards, John
CH701 - Colorado - Jabiru 3300
Cell: 719-494-4567
Home: 303-648-3261
In a message dated 8/7/2010 10:19:51 P.M. Mountain Daylight Time,
imap8ntr@cox.net writes:
--> JabiruEngine-List message posted by: "Ivan" <imap8ntr@cox.net>
The Jab engine manual has all these operating limitation parameters. I
do
my mag check at about 2000RPM and the drop parameters I think are less
than
100RPM drop and less than 100 from side to side. This is from memory but
I
know the manual states these figures. I have these figures printed in my
engine run up checklist. I never get a carb heat drop unless there is
some
icing in the carburetor. Not exactly sure why but I think it has
something
to do with the Bing being set up as "altitude compensating."
Ivan
Phoenix, AZ
----- Original Message -----
From: "MHerder" <michaelherder@beckgroup.com>
Sent: Saturday, August 07, 2010 8:28 PM
Subject: JabiruEngine-List: "MAG" Check
> --> JabiruEngine-List message posted by: "MHerder"
> <michaelherder@beckgroup.com>
>
> What RPM are you doing your "Mag" Check at? What's a normal drop? I
was
> trying 1800 RPM and am not getting a noticable drop, also not getting a
> noticeable drop when I kick in the carb heat?
>
> Engine has about .9 hr of ground run time on it and we're still working
> out some kinks.
>
> I guess we call a "mag" check a coil or orgnition check on a Jab?
>
> I'm using the Grand Rapids EIS and noticed that there are two
sensitivity
> settings on the tach, but I want to get some go no go parameters from
some
> folks.
>
> Thanks
>
> --------
> One Rivet at a Time!
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=307893#307893
>
>
>
Message 3
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Not on mine. I am finishing my 3300 install and my air box has a diverter
flap controlled by a push/pull cable I have installed.
Jim Crowder
Installing a 3300 in a Kitfox 5
Northern Colorado
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
JohnDRead@aol.com
Sent: Sunday, August 08, 2010 10:47 AM
Subject: Re: JabiruEngine-List: "MAG" Check
Hi Guys;
I recall from the Jabiru installation instructions the carb heat
is always on so there should not be any RPM drop.
do not archive
Regards, John
CH701 - Colorado - Jabiru 3300
Cell: 719-494-4567
Home: 303-648-3261
In a message dated 8/7/2010 10:19:51 P.M. Mountain Daylight Time,
imap8ntr@cox.net writes:
The Jab engine manual has all these operating limitation parameters. I do
my mag check at about 2000RPM and the drop parameters I think are less than
100RPM drop and less than 100 from side to side. This is from memory but I
know the manual states these figures. I have these figures printed in my
engine run up checklist. I never get a carb heat drop unless there is some
icing in the carburetor. Not exactly sure why but I think it has something
to do with the Bing being set up as "altitude compensating."
Ivan
Phoenix, AZ
----- Original Message -----
From: "MHerder" <michaelherder@beckgroup.com>
Sent: Saturday, August 07, 2010 8:28 PM
Subject: JabiruEngine-List: "MAG" Check
> <michaelherder@beckgroup.com>
>
> What RPM are you doing your "Mag" Check at? What's a normal drop? I was
> trying 1800 RPM and am not getting a noticable drop, also not getting a
> noticeable drop when I kick in the carb heat?
>
> Engine has about .9 hr of ground run time on it and we're still working
> out some kinks.
>
> I guess we call a "mag" check a coil or orgnition check on a Jab?
>
> I'm using the Grand Rapids EIS and noticed that there are two sensitivity
> settings on the tach, but I want to get some go no go parameters from some
> folks.
>
> Thanks
>
> --------
> One Rivet at a Time!
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=307893#307893
>
>
> ========================= Use utilities Day
================================================ - MATRONICS
WEB FORUMS ================================================ -
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Message 4
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Michael,
I get 20 to 30 rpm drop on each side. ( 3300 ) This is after break-in ( 96 hrs
). The first few hours my mag drop was inconsistent due to rings not seated and
uneven oil consumption. Still not close to a hundred except when mixture was
VERY rich and plugs sooted up. My first 15~45 hrs was spent trying to get mixture
and cooling problems solved. Now if I get more than a 40 rpm drop it is usually
a plug and will clear up after a good flight.
Bobby
Jacksonville, Fl.
Message 5
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Try your mag check at different, typically lower, rpms- 1100-1300 range wi
ll normally result in 10-30 rpm drop.? Try it at idle or in cruise flight
and it's pretty obvious as well.? You should also be able to hear a chang
e in engine sound even if no evidence showing on tach...
?
Possum
-----Original Message-----
From: Jim Crowder <jcrowder@lpbroadband.net>
Sent: Sun, Aug 8, 2010 2:25 pm
Subject: RE: JabiruEngine-List: "MAG" Check
Not on mine.? I am finishing my 3300 install and my air box has a diverter
flap controlled by a push/pull cable I have installed.
Jim Crowder
?
Installing a 3300 in a Kitfox 5
Northern Colorado
?
From: owner-jabiruengine-list-server@matronics.com [mailto:owner-jabirueng
ine-list-server@matronics.com] On Behalf Of JohnDRead@aol.com
Sent: Sunday, August 08, 2010 10:47 AM
Subject: Re: JabiruEngine-List: "MAG" Check
?
Hi Guys;
????????????I recall from the Jabiru installation instructions the carb he
at is always on so there should not be any RPM drop.
?
do not archive
?
Regards, John
CH701 - Colorado - Jabiru 3300
Cell: 719-494-4567
Home: 303-648-3261
?
In a message dated 8/7/2010 10:19:51 P.M. Mountain Daylight Time, imap8ntr
@cox.net writes:
--> JabiruEngine-List message posted by: "Ivan" <imap8ntr@cox.net>
;
The Jab engine manual has all these operating limitation parameters.?? I
do
my mag check at about 2000RPM and the drop parameters I think are less tha
n
100RPM drop and less than 100 from side to side.? This is from memory but
I
know the manual states these figures.? I have these figures printed in my
engine run up checklist.? I never get a carb heat drop unless there is som
e
icing in the carburetor.? Not exactly sure why but I think it has somethin
g
to do with the Bing being set up as "altitude compensating."
Ivan
Phoenix, AZ
----- Original Message -----
From: "MHerder" <michaelherder@beckgroup.com>
Sent: Saturday, August 07, 2010 8:28 PM
Subject: JabiruEngine-List: "MAG" Check
> --> JabiruEngine-List message posted by: "MHerder"
> <michaelherder@beckgroup.com>
>
> What RPM are you doing your "Mag" Check at?? What's a normal drop??
I was
> trying 1800 RPM and am not getting a noticable drop, also not getting
a
> noticeable drop when I kick in the carb heat?
>
> Engine has about .9 hr of ground run time on it and we're still worki
ng
> out some kinks.
>
> I guess we call a "mag" check a? coil or orgnition check on a Jab?
>
> I'm using the Grand Rapids EIS and noticed that there are two sensiti
vity
> settings on the tach, but I want to get some go no go parameters from
some
> folks.
>
> Thanks
>
> --------
> One Rivet at a Time!
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=307893#307893
>
>
>
>
>
>
>
>
>
> Use utilities Day =================
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