Today's Message Index:
----------------------
1. 11:50 AM - MT Prop Update (Aucountry@aol.com)
2. 11:55 AM - Cowling Update 7.1 (Aucountry@aol.com)
3. 11:56 AM - Cowling Update 7.1.1 (Aucountry@aol.com)
4. 01:33 PM - Re: MT Prop Update (Bruce Smith)
5. 03:30 PM - Interference to a Grumman III Pilot GPS (FLYaDIVE@aol.com)
6. 06:03 PM - ELT Antenna (Aucountry@aol.com)
7. 06:08 PM - Re: Interference to a Grumman III Pilot GPS (Aucountry@aol.com)
8. 06:11 PM - Re: MT Prop Update (Aucountry@aol.com)
Message 1
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--> TeamGrumman-List message posted by: Aucountry@aol.com
I received the manifold pressure gauge and the prop controller about 5 days
ago. I just opened the box yesterday. OK, so, I've been busy.
The plan... is to mount the gauge at the bottom of the avionics stack.
Because this Tiger has a 430 and one other nav/com, there is a lot of room in the
stack.
The gauge and the prop controller will just barely fit side by side in the
stack. If I can't make it work this way, I'll put the manifold pressure gauge
in the space where the autopilot switches are and leave the controller in the
radio stack.
More to come
Message 2
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| Subject: | Cowling Update 7.1 |
--> TeamGrumman-List message posted by: Aucountry@aol.com
We completed the tooling for the new bottom cowling portions. They look
really bitchin'. Dave likes the shallow one, I like the other one. We'll see
which is faster and which cools better. The ones without the nose gear boot
will be able to remove in about 10 minutes. Putting them on takes a bit
longer because the baffle seals are a little short yet. I'll probable change
that in the next go round.
So, now, I have essentially three cowlings to flight test. I should be
getting the test plane in a couple of weeks.
I got about 6-10 more knots out of the new cowling with the original cooling
ramps and nose gear boot. I'm anxious to see what difference the new
cowlings make.
Message 3
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| Subject: | Cowling Update 7.1.1 |
--> TeamGrumman-List message posted by: Aucountry@aol.com
Oh, yea, the new cowling only has ONE exit ramp! It's 16 inches wide, but
there is only one.
Message 4
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| Subject: | Re: MT Prop Update |
--> TeamGrumman-List message posted by: Bruce Smith <res02p3h@verizon.net>
Gary,
Does the diameter of the MT spinner match the diameter of the Grumman
spinner? If not, how much difference?
Thanks.
Bruce Smith
On Nov 26, 2003, at 2:50 PM, Aucountry@aol.com wrote:
> --> TeamGrumman-List message posted by: Aucountry@aol.com
>
> I received the manifold pressure gauge and the prop controller about 5
> days
> ago. I just opened the box yesterday. OK, so, I've been busy.
>
> The plan... is to mount the gauge at the bottom of the avionics stack.
> Because this Tiger has a 430 and one other nav/com, there is a lot of
> room in the
> stack.
>
> The gauge and the prop controller will just barely fit side by side in
> the
> stack. If I can't make it work this way, I'll put the manifold
> pressure gauge
> in the space where the autopilot switches are and leave the controller
> in the
> radio stack.
>
> More to come
>
>
> _-
> =======================================================================
> _-> _-
> =======================================================================
> _-
> =======================================================================
> _-
> =======================================================================
> _-
> =======================================================================
> >
>
>
Message 5
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| Subject: | Interference to a Grumman III Pilot GPS |
--> TeamGrumman-List message posted by: FLYaDIVE@aol.com
--------
> I have a Garmin III pilot GPS that looses it's signal strength the
> minute I turn on the master. That is, the bars on the satellite status
> page drop. I have moved the antenna to the rear side window of my 72
> traveler and now it drops but not all the way and so the GPS is of some
> use.
>
> I have turned off all radios, VORs, X'ponder, Lorane and I have
> disconnected the Gyro and Electronic tach. The strobe is also off and
> nav lights are off. I have removed all removable fuses and still I have
> the interference with my GPS.
>
> The alternator is off and therefore the regulator is also off. I
> suppose my next test would be to use some other receiver tuned to the
> GPS's LO frequency to find the source.
>
> I have not disconnected the ceramic breakers and I don't know how to
> make them come out and disconnect, but then I have everything turned off
> anyway. I know some equipment is hot all the time (to maintain memory)
> but the interference only happens when I turn on the master, the hot
> feed always stays hot..
>
> Anyone have this problem? Anyone know the source of the interference?
> Any ideas?
==========================
Very interesting .....
Can you answer a couple of things?
1 - You say you disconnected your Gyros ... are you referring to the T&B?
2 - You say you have ALL electronics OFF ... Well, I assume that is true ..
But, what frequency is set in your VOR?
If you see any frequency between 109.00 to 109.95 and you have a NARCO, I
know it is a problem with NARCO, maybe others? It will interfere with the
signal
strength and you will get a LOST SATELLITE message.
Now, here are a couple of other tests you can make:
a> Run off the internal GPS BATTERY and see if you still get the same
problem.
b> Check your supply voltage for the plane, are you at or above 12.5 V DC at
the GPS connection?
The WARM FUZZY voltmeter will show you supply (battery) and charge system
condition at all times. <Sales Pitch>
c> Swap GPS Antenna's. Does the signal drop off, do you get the same signal
strength with both antennas?
I found with the interference given off by the NARCO VORs I had to move the
antenna all the way to the turtle deck before it was not a factor.
OK, That's all for now ... Let us know how you made out.
Barry
"Chop'd Liver"
Message 6
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--> TeamGrumman-List message posted by: Aucountry@aol.com
Anyone have an ELT antenna for one of the original Narco ELTs?
Message 7
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| Subject: | Re: Interference to a Grumman III Pilot GPS |
--> TeamGrumman-List message posted by: Aucountry@aol.com
In a message dated 11/26/03 03:30:38 PM, FLYaDIVE@aol.com writes:
> a> Run off the internal GPS BATTERY and see if you still get the same
> problem.=A0
>
this was my thought. I had some problems with the line voltage being around
11.9 volts.
Message 8
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| Subject: | Re: MT Prop Update |
--> TeamGrumman-List message posted by: Aucountry@aol.com
In a message dated 11/26/03 01:34:34 PM, res02p3h@verizon.net writes:
> Gary,
>
> Does the diameter of the MT spinner match the diameter of the Grumman=A0
> spinner? If not, how much difference?
>
> Thanks.
>
> Bruce Smith
>
Bruce, I haven't received the prop/spinner yet. I'll let the Tema know what
my opinion of the MT prop is. That's a given. Have you ever known me not
to say what I was thinking?
I was against the PowerFlow when it first came out. Now, I really like it.
My only complaint with the PowerFlow is that they screwed up the alignment of
how the exhaust gets from the collector to the muffler. If I put one in my
own plane, I'd cut the s-bend and reweld in a different alignment. Too bad
the PowerFlow guys fell down on the final fit and finish of the tail-pipe.
Gary
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