Today's Message Index:
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1. 02:16 PM - Re: Radio Interference ()
2. 02:40 PM - V541 Propeller ()
3. 03:00 PM - Prop for sale (sjbeaver)
Message 1
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| Subject: | Radio Interference |
Thank you very much for the input, on my installation the slickstart is on
the left mag looking forward. I will start by swapping the "P" leads, did
not think of that, will let you know
Keep well
Mike
From: owner-lom-list-server@matronics.com
<owner-lom-list-server@matronics.com> On Behalf Of sjbeaver
Sent: Thursday, March 28, 2024 5:52 AM
Subject: Re: Lom-List: Radio Interference
A few thoughts:
1) The right mag is equipped with an external starting device, either a
buzzer or a SlickStart presumably. I would be inclined to carefully inspect
the shielding of the wiring related to that. The HT leads and plugs also
need careful inspection of course. A loose cap, a corroded lead etc may
cause a spark to occur where it shouldn't and so generate a tick.
2) Can you tell if you hear one tick per revolution of one tick per four
revolutions? That would tell you whether you are looking for a primary side,
or an HT/plug related issue
3) Are your 'P' leads long enough to swap from side to side? Doing so would
again isolate the issue to the starter system and wiring, or the magneto.
I suspect you are going to have to narrow things down by
swapping/replacing/inspecting.
Steve
--
Stephen Beaver
Als ik kan
Tel: 614-937 4189
On Mar 28, 2024, at 1:29 AM, <mike@vision499.com <mailto:mike@vision499.com>
> <mike@vision499.com <mailto:mike@vision499.com> > wrote:
Hello
I have a LOM M332 aircraft engine with 2 factory magnetos and an MGL V16
radio.
Antenna is copper foil with balun epoxied into the VS
There are no filters installed.
While listening to ATIS (118.1) there is a ticking sound that is linked to
the right magneto, it goes away when right mag is switched off.
No noise when running only on left mag
While listening to ATIS I can also hear static that is not there on the
other frequencies
I cannot be 100% certain but I think the noise is new.
This noise is not present when listening to Tower (121.9) or other
frequencies.
Any ideas on what could cause this
Thanks
Mike
Mike Pienaar
mike@vision499.com <mailto:ike@vision499.com>
Home: +1 250-999-8121
Mike cell: +1 250-885-0554
1-1100 Tulip Ave, Victoria, BC, V8Z 0A2
Message 2
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Hello
Had a real close call yesterday.
I have the V541 constant speed propeller with reverse thrust capability.
Reverse thrust is activated by pulling the throttle control back past idle,
this then reverses the throttle and
Activates a valve that I presume reverses the oil flow to the propeller.
I deactivated the reverse thrust capability by removing the lever attached
to the throttle that activates the reverse thrust valve and wired in the
forward thrust position, the throttle lever also
Has a stop that prevents it from being pulled back.
About a year ago I ran the engine on the ground and it went into reverse
thrust mode and I shut it off immediately and on inspection found that the
cup seals at the base of the prop blade
Where it enters the hub had failed and oil was leaking out. The propeller is
20 years old but has never been used other than ground runs and I presumed
that the seals have hardened over time.
I also thought that the leaking seals caused the propeller to go into
reverse thrust mode.
I did think that it strange that in failure mode the propeller would go into
reverse thrust and not into full fine forward thrust.
Yesterday on our 3rd flight the pilot wanted to do a touch and go and when
we were at about 500 feet he pushed the propeller lever to fine and the
propeller went into reverse thrust mode, we were
Carrying extra speed as he intended touching down long
We touched down on the numbers and the plane started going backwards. When
he pulled the propeller control to "coarse" the propeller went into forward
thrust and we managed to get off the runway
I will e-mail aviapropellers and see if somebody there has an explanation
If anybody has any thoughts I would love to hear them
Thanks
Mike
Message 3
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I have converted my LOM332AK to fixed pitch operation so the V500A
constant speed prop, governor, spinner, oil lines and crankshaft seal
assembly are available for sale.
Steve
--
Stephen Beaver
Als ik kan
Tel: 614-937 4189
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