Today's Message Index:
----------------------
1. 10:41 AM - Re: more info on electrical mystery (ThomasTholmes512@aol.com)
2. 03:10 PM - Cowling update: The Before Tests (Aucountry@aol.com)
3. 04:10 PM - Re: Cowling update: The Before Tests (ThomasTholmes512@aol.com)
4. 04:57 PM - Re: Cowling update: The Before Tests (FLYaDIVE@aol.com)
5. 05:51 PM - (Aucountry@aol.com)
6. 05:59 PM - (Aucountry@aol.com)
7. 08:11 PM - Re: (ThomasTholmes512@aol.com)
8. 08:26 PM - Re: Re: (Bradley Kidder)
9. 09:41 PM - Re: Re: (Aucountry@aol.com)
10. 09:45 PM - (Aucountry@aol.com)
11. 09:46 PM - (Aucountry@aol.com)
12. 09:54 PM - trying to reply to cowling update (Aucountry@aol.com)
13. 09:55 PM - trying to respond to cowling update (Aucountry@aol.com)
Message 1
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| Subject: | Re: more info on electrical mystery |
--> TeamGrumman-List message posted by: ThomasTholmes512@aol.com
Mike,
I just went thru a similar episode on my Turn and Bank. Turns out that there
was an inline fuse in addition to the CB. The fuse just gave up. It was
under the panel and I found it by visually tracing the wiring from the CB to the
instrument.
Tom
Message 2
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| Subject: | Cowling update: The Before Tests |
--> TeamGrumman-List message posted by: Aucountry@aol.com
As with any good research project, there needs to be a baseline for the data.
I did these tests after I finished the cowling intital evaluation.
condition/Alt/OAT/IAS/delta P (pressure drop across cylinders)/TAS
.... New cowling tests in parenthesis
Idle/2350/108/0/0.375 (0.75)/0;
1800/2350/108/0/0.75 (1.50)/0
Climb out at 100 knots/ ... /103/100/3-3.50 (4.5-5.0)/ ...
Straight & Level/4500/94/122/4-4.5 (6.5)/137 (143)
Straight & Level/5500/88/119/5.0 (6.5)/136 (144)
Straight & Level/6500/84/117/5.0 (6.5)/138 (147)
Straight & Level/7500/79/116/4.5 (6.5 - 7.0)/137 (147-153; several different
tests)
Straight & Level/8500/74/114/4.5 (6.5 -7.0)/140 (145-151; several differnt
tests)
In general, the new cowling produced up to an additional 2 inches of water
pressure drop across the cylinders. The CHTs, surprisingly, were only about
10-20 degrees higher with the original cowling and having less pressre drop
across the cylinders. #3 CHT was rarely below 450 below 5500 feet. At 8500
feet, it cooled to 428. The new cowl ran about 415 under similar conditions.
The really noticeable result was the wide temperature variations between the
four cylinders with the original cowling. With the new cowling, CHTs were
withn a few degrees of each other (with the exception of #3). Clearly more work
needs to be done to lower CHTs on #3.
The differences in TAS can be seen. It was interesting to note that I could
NOT turn over redline (2700 rpm) at (or above) 6500 feet with the original
cowling. I could run redline to 8500 feet with the new cowling.
All things being equal, the new cowling is worth 8-10 knots.
Gary
www.AuCountry.com
Home of "Team Grumman"
TeamGrumman-List@matronics.com
http://www.matronics.com/subscribe
Message 3
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| Subject: | Re: Cowling update: The Before Tests |
--> TeamGrumman-List message posted by: ThomasTholmes512@aol.com
In a message dated 8/28/2003 3:15:40 PM Pacific Standard Time,
Aucountry@aol.com writes:
> The differences in TAS can be seen. It was interesting to note that I
> could
> NOT turn over redline (2700 rpm) at (or above) 6500 feet with the original
> cowling. I could run redline to 8500 feet with the new cowling.
>
>
> All things being equal, the new cowling is worth 8-10 knots.
>
>
> Gary
> www.AuCountry.com
>
And, it is really pretty!
Tom
Message 4
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| Subject: | Re: Cowling update: The Before Tests |
--> TeamGrumman-List message posted by: FLYaDIVE@aol.com
Hi Gary:
I'm sitting here DROOLING and saving my pennies. When is the AA-5 Cowl going
to be ready? If you are getting 7 Kts for an AA-5A&B I would guess you
should do the same or even BETTER for the AA-5 (Big Blunt Nose Bowl).
Barry
Message 5
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--> TeamGrumman-List message posted by: Aucountry@aol.com
In a message dated 08/28/03 04:11:09 PM, ThomasTholmes512@aol.com writes:
> And, it is really pretty!
> Tom
>
>
thanks
Message 6
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--> TeamGrumman-List message posted by: Aucountry@aol.com
In a message dated 08/28/03 04:57:36 PM, FLYaDIVE@aol.com writes:
> I'm sitting here DROOLING and saving my pennies.=A0 When is the AA-5 Cowl
> going
> to be ready?=A0 If you are getting 7 Kts for an AA-5A&B I would guess you
> should do the same or even BETTER for the AA-5 (Big Blunt Nose Bowl).
>
The next step is to investigate removing the nose gear boot and developing a
carb/injector inlet that will work with AA5s, AA5As and AA5Bs (and AG5Bs...).
be easy to service, and produce a respectable increase in pressure to the
carb.
I haven't said too much about it but, one person can remove this cowling,
left or right half, at a time by simply removing the required screws, holding the
cowling by the inlet and where it attached to the fuselage, and taking one
step backwards. Getting rid of the nose gear boot will make R&R of the cowling
easier too.
The biggest and bestest part is a replacement for the metal cowlings which
are fatiguing and cracking all over the place. Not to mention, I think it
looks a lot more contemporary than the original cowling.
Gary
www.AuCountry.com
Home of "Team Grumman"
TeamGrumman-List@matronics.com
http://www.matronics.com/subscribe
Message 7
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--> TeamGrumman-List message posted by: ThomasTholmes512@aol.com
Gary,
have you given any thought to a version for the two seaters?
Tom
Message 8
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--> TeamGrumman-List message posted by: Bradley Kidder <sparksnmagic@usa.net>
We're here, Tom... we just haven't had any discussions yet.
><((((=BA>`=B7.=B8=B8.=B7=B4=AF`=B7.=B8.=B7=B4=AF`=B7...=B8><((((=BA>
=B7=B4=AF`=B7.=B8. , . .=B7=B4=AF`=B7.. ><((((=BA>`=B7.=B8=B8.=B7=B4=AF`=B7.=B8.=B7=B4=AF`=B7...=B8><((((=BA>
Bradley Kidder
N188FW AA-1 #124 "Hawg One"
NTSB / EAA / AOPA / AYA
Message 9
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--> TeamGrumman-List message posted by: Aucountry@aol.com
In a message dated 08/28/03 08:11:48 PM, ThomasTholmes512@aol.com writes:
> Gary,
> have you given any thought to a version for the two seaters?
> Tom
>
>
I hope this email goes through. The last 4 ... well, I haven't seen them.
As for the 2 seaters, ken Blackman was supposedly working on a fiberglas
cowling for the two seaters. Not sure if he still is.
Gary
www.AuCountry.com
Home of "Team Grumman"
TeamGrumman-List@matronics.com
http://www.matronics.com/subscribe
Message 10
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--> TeamGrumman-List message posted by: Aucountry@aol.com
In a message dated 08/28/03 04:57:36 PM, FLYaDIVE@aol.com writes:
> Hi Gary:
>
> I'm sitting here DROOLING and saving my pennies.=A0 When is the AA-5 Cowl
> going
> to be ready?=A0 If you are getting 7 Kts for an AA-5A&B I would guess you
> should do the same or even BETTER for the AA-5 (Big Blunt Nose Bowl).
>
>
> Barry
>
>
Let's try this again...
The next step is to investigate removing the nose gear boot and developing=20a
carb/injector inlet that will work with AA5s, AA5As and AA5Bs (and AG5Bs...).
be easy to service, and produce a respectable increase in pressure to the
carb.=A0
I haven't said too much about it but, one person can remove this cowling,
left or right half, at a time by simply removing the required screws, holding the
cowling by the inlet and where it attached to the fuselage, and taking one
step backwards.=A0 Getting rid of the nose gear boot will make R&R of the cowling
easier too.=A0
The biggest and bestest part is a replacement for the metal cowlings which
are fatiguing and cracking all over the place.=A0 Not to mention, I think it looks
a lot more contemporary than the original cowling.
Gary
www.AuCountry.com
Home of "Team Grumman"
TeamGrumman-List@matronics.com
http://www.matronics.com/subscribe
Message 11
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--> TeamGrumman-List message posted by: Aucountry@aol.com
In a message dated 08/28/03 04:11:09 PM, ThomasTholmes512@aol.com writes:
> And, it is really pretty!
> Tom
>
>
Thanks Tom
Message 12
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| Subject: | trying to reply to cowling update |
--> TeamGrumman-List message posted by: Aucountry@aol.com
--> TeamGrumman-List message posted by: Aucountry@aol.com
In a message dated 08/28/03 04:11:09 PM, ThomasTholmes512@aol.com writes:
> And, it is really pretty!
> Tom
>
>
Thanks Tom
Message 13
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| Subject: | trying to respond to cowling update |
--> TeamGrumman-List message posted by: Aucountry@aol.com
--> TeamGrumman-List message posted by: Aucountry@aol.com
In a message dated 08/28/03 04:57:36 PM, FLYaDIVE@aol.com writes:
> Hi Gary:
>
> I'm sitting here DROOLING and saving my pennies.=A0 When is the AA-5 Cowl
> going
> to be ready?=A0 If you are getting 7 Kts for an AA-5A&B I would guess you
> should do the same or even BETTER for the AA-5 (Big Blunt Nose Bowl).
>
>
> Barry
>
>
Let's try this again...
The next step is to investigate removing the nose gear boot and
developing=20a
carb/injector inlet that will work with AA5s, AA5As and AA5Bs (and AG5Bs...).
be easy to service, and produce a respectable increase in pressure to the
carb.=A0
I haven't said too much about it but, one person can remove this cowling,
left or right half, at a time by simply removing the required screws, holding
the
cowling by the inlet and where it attached to the fuselage, and taking one
step backwards.=A0 Getting rid of the nose gear boot will make R&R of the
cowling
easier too.=A0
The biggest and bestest part is a replacement for the metal cowlings which
are fatiguing and cracking all over the place.=A0 Not to mention, I think it
looks
a lot more contemporary than the original cowling.
Gary
www.AuCountry.com
Home of "Team Grumman"
TeamGrumman-List@matronics.com
http://www.matronics.com/subscribe
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