Today's Message Index:
----------------------
1. 09:57 AM - Re: Uplock mounting plate broken (A. Dennis Savarese)
2. 10:51 AM - Mag Drops (Mike Fagan)
3. 10:51 AM - Boost on 400 hp >........ M14PF (Mike Fagan)
4. 01:30 PM - Re: Uplock mounting plate broken (Doug)
5. 02:32 PM - Re: Uplock mounting plate broken (A. Dennis Savarese)
6. 02:37 PM - Re: Boost on 400 hp >........ M14PF (A. Dennis Savarese)
7. 02:47 PM - Re: Mag Drops (A. Dennis Savarese)
8. 04:48 PM - Re: Uplock mounting plate broken (Doug)
9. 07:41 PM - NAME (FamilyGage@aol.com)
10. 08:10 PM - Random Hobbes Times (Jon Boede)
11. 08:20 PM - Re: Random Hobbes Times (Wes Warner)
12. 08:54 PM - Re: Uplock mounting plate broken (Frank Haertlein)
Message 1
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| Subject: | Re: Uplock mounting plate broken |
--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
Thanks Frank. Excellent tip. Glad you found it during a gear retraction
test.
Dennis Savarese
----- Original Message -----
From: "Frank Haertlein" <yak52driver@earthlink.net>
Subject: Yak-List: Uplock mounting plate broken
> --> Yak-List message posted by: "Frank Haertlein"
<yak52driver@earthlink.net>
>
> Yaksters;
> Had what seemed like a harder than usual gear retraction this morning.
> The nose wheel gave a good "BANG" as it went up. It came up hard enough
> that it burned out one of my uplock lights.
>
> Extended the gear and all looked well from the cockpit. A slow fly-by
> with friends looking on indicated that the gear looked normal. Made a
> non-eventful landing. Gear retraction tests on the ground indicated the
> following problem as detailed in the following link.................
>
> http://home.earthlink.net/~yak52driver/wheel_well.html
>
> Frank
> N9110M
>
>
Message 2
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--> Yak-List message posted by: "Mike Fagan" <sashalee@iafrica.com>
Hi there
This issue has probably gone around the bush a few dozen times..... Yak 52.....
Low time engine... New aircraft
Aircraft arrived with a mag drop of 4 - 5 % on the number one magneto....Plugs
cleaned and the aircraft ground tested...... On the ground...... Normal mag drop
of less than 3 % during test..... No abnormal symptoms during flight... After
flight a mag test conducted and a high mag drop of 5 - 8 %.... floating mag
drop noticed......
Ignition harness on front plugs opened and harness sprayed to remove any moisture....
Plugs replaced with new plugs.
Aircraft ground tested and normal mag drop of less than 3% noticed...... Test flown..
After test flight a mag test conducted and a mag drop of a flickering 5
% flcutuating sometimes to 8% and then back to 3 - 4 % noticed.....
Ignition harness tested with HT lead tester..... No indiction of breakage in the
leads....
Lots if ideas.......... Anybody give me a straight solution please..... Where to
next...... What is the most likely cause of this mag drop
Further point : Tested the mags in flight.... High cruise power or 80% prop RPM
and 650mm boost....No fluctuation on Mag 2...... Mag 1 indicates a fluctuating
drop of 2 - 3 % associated slight rough running
Anybody else experienced this......... Where to next please
Kind regards
Mike
Message 3
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| Subject: | Boost on 400 hp >........ M14PF |
--> Yak-List message posted by: "Mike Fagan" <sashalee@iafrica.com>
Question...... At full thrust what is the "normal" indication on the M14PF engine......
Message 4
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| Subject: | Re: Uplock mounting plate broken |
--> Yak-List message posted by: "Doug" <rvfltd@televar.com>
Frank,
Does the 52 use the air line restrictors like the CJ? These restrictors
keep the gear from slamming up or down by metering the amount of air acting
on the actuator. From the looks of the type of damage in your photos, I
would guess that your gear is simply entering the well with a bit to much
horse power, the restrictors might solve this problem. It'll only cost you
$2.00 to find out.
I have them in stock.
Always yakin,
Doug Sapp
----- Original Message -----
From: "Frank Haertlein" <yak52driver@earthlink.net>
Subject: Yak-List: Uplock mounting plate broken
> --> Yak-List message posted by: "Frank Haertlein"
<yak52driver@earthlink.net>
>
> Yaksters;
> Had what seemed like a harder than usual gear retraction this morning.
> The nose wheel gave a good "BANG" as it went up. It came up hard enough
> that it burned out one of my uplock lights.
>
> Extended the gear and all looked well from the cockpit. A slow fly-by
> with friends looking on indicated that the gear looked normal. Made a
> non-eventful landing. Gear retraction tests on the ground indicated the
> following problem as detailed in the following link.................
>
> http://home.earthlink.net/~yak52driver/wheel_well.html
>
> Frank
> N9110M
>
>
Message 5
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| Subject: | Re: Uplock mounting plate broken |
--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
Yes, the 52 does use the restrictors.
Dennis Savarese
----- Original Message -----
From: "Doug" <rvfltd@televar.com>
Subject: Re: Yak-List: Uplock mounting plate broken
> --> Yak-List message posted by: "Doug" <rvfltd@televar.com>
>
> Frank,
> Does the 52 use the air line restrictors like the CJ? These restrictors
> keep the gear from slamming up or down by metering the amount of air
acting
> on the actuator. From the looks of the type of damage in your photos, I
> would guess that your gear is simply entering the well with a bit to much
> horse power, the restrictors might solve this problem. It'll only cost
you
> $2.00 to find out.
>
> I have them in stock.
>
> Always yakin,
> Doug Sapp
>
> ----- Original Message -----
> From: "Frank Haertlein" <yak52driver@earthlink.net>
> To: <yak-list@matronics.com>
> Subject: Yak-List: Uplock mounting plate broken
>
>
> > --> Yak-List message posted by: "Frank Haertlein"
> <yak52driver@earthlink.net>
> >
> > Yaksters;
> > Had what seemed like a harder than usual gear retraction this morning.
> > The nose wheel gave a good "BANG" as it went up. It came up hard enough
> > that it burned out one of my uplock lights.
> >
> > Extended the gear and all looked well from the cockpit. A slow fly-by
> > with friends looking on indicated that the gear looked normal. Made a
> > non-eventful landing. Gear retraction tests on the ground indicated the
> > following problem as detailed in the following link.................
> >
> > http://home.earthlink.net/~yak52driver/wheel_well.html
> >
> > Frank
> > N9110M
> >
> >
>
>
Message 6
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| Subject: | Re: Boost on 400 hp >........ M14PF |
--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
About 39-39.5 inches of MP or 990-1000 mm HG, if you still have the original
manifold pressure gauge.
Dennis Savarese
----- Original Message -----
From: "Mike Fagan" <sashalee@iafrica.com>
Subject: Yak-List: Boost on 400 hp >........ M14PF
> --> Yak-List message posted by: "Mike Fagan" <sashalee@iafrica.com>
>
> Question...... At full thrust what is the "normal" indication on the M14PF
engine......
>
>
Message 7
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--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
Looks like you've done pretty much all of the logical things associated with
the problem. From my perspective there is no finite answer. You could have
a bad/cracked cap in the mag. You could have a loose rotor (3 screws hold
it down should be secure). You could simply swap the mags and if the
problem follows the mag, you will know precisely where the problem is.
When you have the misfiring on #1, run the engine on that mag for a few
minutes. Then immediately check the temperature of each cylinder. The cold
cylinder will be your starting point.
Dennis Savarese
----- Original Message -----
From: "Mike Fagan" <sashalee@iafrica.com>
Subject: Yak-List: Mag Drops
> --> Yak-List message posted by: "Mike Fagan" <sashalee@iafrica.com>
>
> Hi there
>
> This issue has probably gone around the bush a few dozen times..... Yak
52..... Low time engine... New aircraft
>
> Aircraft arrived with a mag drop of 4 - 5 % on the number one
magneto....Plugs cleaned and the aircraft ground tested...... On the
ground...... Normal mag drop of less than 3 % during test..... No abnormal
symptoms during flight... After flight a mag test conducted and a high mag
drop of 5 - 8 %.... floating mag drop noticed......
>
> Ignition harness on front plugs opened and harness sprayed to remove any
moisture.... Plugs replaced with new plugs.
>
> Aircraft ground tested and normal mag drop of less than 3% noticed......
Test flown.. After test flight a mag test conducted and a mag drop of a
flickering 5 % flcutuating sometimes to 8% and then back to 3 - 4 %
noticed.....
>
> Ignition harness tested with HT lead tester..... No indiction of breakage
in the leads....
>
> Lots if ideas.......... Anybody give me a straight solution please.....
Where to next...... What is the most likely cause of this mag drop
>
> Further point : Tested the mags in flight.... High cruise power or 80%
prop RPM and 650mm boost....No fluctuation on Mag 2...... Mag 1 indicates a
fluctuating drop of 2 - 3 % associated slight rough running
>
>
> Anybody else experienced this......... Where to next please
>
> Kind regards
>
> Mike
>
>
Message 8
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| Subject: | Re: Uplock mounting plate broken |
--> Yak-List message posted by: "Doug" <rvfltd@televar.com>
Frank,
Does the 52 use the air line restrictors like the CJ? These restrictors
keep the gear from slamming up or down by metering the amount of air acting
on the actuator. From the looks of the type of damage in your photos, I
would guess that your gear is simply entering the well with a bit to much
horse power, the restrictors might solve this problem. It'll only cost you
$2.00 to find out.
I have them in stock.
Always yakin,
Doug Sapp
----- Original Message -----
From: "Frank Haertlein" <yak52driver@earthlink.net>
Subject: Yak-List: Uplock mounting plate broken
> --> Yak-List message posted by: "Frank Haertlein"
<yak52driver@earthlink.net>
>
> Yaksters;
> Had what seemed like a harder than usual gear retraction this morning.
> The nose wheel gave a good "BANG" as it went up. It came up hard enough
> that it burned out one of my uplock lights.
>
> Extended the gear and all looked well from the cockpit. A slow fly-by
> with friends looking on indicated that the gear looked normal. Made a
> non-eventful landing. Gear retraction tests on the ground indicated the
> following problem as detailed in the following link.................
>
> http://home.earthlink.net/~yak52driver/wheel_well.html
>
> Frank
> N9110M
>
>
Message 9
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--> Yak-List message posted by: FamilyGage@aol.com
How about "RedStar Aviation Group" or RAG, since the other groups seem to
rag on us until they see us fly!
Have a 52-TW or order. Anyone that could refer for a good home for my 2000
52-W would be appreciated.
Ray
Message 10
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| Subject: | Random Hobbes Times |
--> Yak-List message posted by: "Jon Boede" <jon@email.net>
I had a Hobbes meter installed on the Battery switch in my CJ some 375
hours ago (about 18 months) and it's begun keeping random times...
reporting between 50% and 100% of the actual time the battery switch was
on.
Is there something about the generator in the CJ (stock 285hp engine) that
would scramble a Hobbes meter's brain, or do we suspect that I simply have
a flaky meter? Nothing else electrical is misbehaving.
Jon
Message 11
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| Subject: | Re: Random Hobbes Times |
Mail-Followup-To: Wes Warner <wes@lppcs.com>, yak-list@matronics.com
--> Yak-List message posted by: Wes Warner <wes@lppcs.com>
Jon,
I have a friend at the airport that is/was experiencing the same problem.
It was the hobbs meter.
Wes
On Mon, Aug 18, 2003 at 10:05:34PM -0500, Jon Boede wrote:
> --> Yak-List message posted by: "Jon Boede" <jon@email.net>
>
> I had a Hobbes meter installed on the Battery switch in my CJ some 375
> hours ago (about 18 months) and it's begun keeping random times...
> reporting between 50% and 100% of the actual time the battery switch was
> on.
>
> Is there something about the generator in the CJ (stock 285hp engine) that
> would scramble a Hobbes meter's brain, or do we suspect that I simply have
> a flaky meter? Nothing else electrical is misbehaving.
>
> Jon
>
--
Time to go to... Group Therapy.
Message 12
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| Subject: | Uplock mounting plate broken |
--> Yak-List message posted by: "Frank Haertlein" <yak52driver@earthlink.net>
Doug;
Excellent point.........
"Does the 52 use the air line restrictors like the CJ? These
restrictors keep the gear from slamming up or down by metering the
amount of air acting
on the actuator".
Doug, as it was, the only thing different about gear retraction this
particular morning was that I had the GIB do the gear
retraction......something I don't normally do. He stopped for a second
in the neutral position before continuing to the retracted position. I
think that this allowed air pressure to build in the retraction side of
the line so that when he finally reached the retracted position, full
air pressure had built up and was thus acting on the retract
cylinders.....almost as though it were an emergency retraction.....BANG!
I normally operate the retraction lever from full up to full down (or
vic-a-versa) without any lag or stopping in the neutral position with a
usual, resultant smooth retraction or extension. Maybe restrictors would
be an option in this case????? The problem doesn't happen if you
actuate the gear levers properly by not stopping in neutral position
before going to retracted to extended position.
Frank
N9110M
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