Today's Message Index:
----------------------
1. 09:19 AM - Cowling update 2 (Aucountry@aol.com)
2. 09:37 AM - Re: Engine temps and cooling for Cheetah (Aucountry@aol.com)
3. 09:39 AM - Re: Fw: Hoses (Aucountry@aol.com)
4. 10:03 AM - Re: Re: Engine temps and cooling for Cheetah (bob milligan)
5. 12:15 PM - Cowling update 2 (owner-teamgrumman-list-server@matronics.com)
6. 06:56 PM - Re: Lost Cylinder (Aucountry@aol.com)
7. 07:03 PM - Cowling (Aucountry@aol.com)
8. 07:04 PM - Re: Re: Engine temps and cooling for Cheetah (Aucountry@aol.com)
9. 07:15 PM - Re: Re: Engine temps and cooling for Cheetah (bob milligan)
Message 1
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| Subject: | Cowling update 2 |
--> TeamGrumman-List message posted by: Aucountry@aol.com
Well, last week was very busy.
I finished resealing the wing tank on a Tiger. This is a Tiger with just
751 TT since new. I also did a lot of other thngs on this plane, but,
resealing the left wing was the most time consuming.
I rigged a Cheetah, repaired its tail tie-down, and replaced its cylinder
baffles.
I modified the baffles on a Tiger and did a lot of other little odds and
ends.
On Friday, Tammy, the boys and I, went fishing. We drove to Big Bear Lake
and rented a pontoon boat. It was the first time I went fishing in 38 years.
Tammy is a real fishergirl, so, if I go fishing, then she'll go to fly-ins.
'Course, I need a plane too. Anyway, I was the only one who caught a
fish. A 14 inch rainbow trout!
Today, we're going to put the new cowling on the Brian's 75 Tiger. With any
luck, we'll do taxi tests and maybe fly it. I'm anxious. I've been
working on this for 3 years. It's taken a year to fit the inlets.
Wish me luck.
Gary
www.AuCountry.com
Home of "Team Grumman"
TeamGrumman-List@matronics.com
http://www.matronics.com/subscribe
Message 2
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| Subject: | Re: Engine temps and cooling for Cheetah |
--> TeamGrumman-List message posted by: Aucountry@aol.com
In a message dated 07/20/03 08:07:55 AM, tjurik@opencagesoftware.com writes:
> I recently got a JPI engine analyzer and find myself concerned with the
> temps on the rear two cylinders.=A0 I flew for about 3 hours (1.5 each way)
> and had the following results:
>
> 7500 feet - 1 and 2 were not a problem at all.=A0 3 and 4 were around 1300 to
> 1390 EGT and CHTs were around 390 to 420.=A0 The older analog gauge showed
> about 400.=A0 I was leaned pretty well.
>
> on the return trip 4500 minimal leaning was even worse - 3 and 4 were about
> 1375 and 400 or more and the analog gauge showed just about redline (450).
>
Several months ago I sent a post indicating that I had dropped the CHTs 30
degrees in a Tiger. Yesterday, I flew two Tigers. I had modified the rear
baffles (the ones that wrap around the bottom of the cylinder head) on both=20#3
and #4 on both Tigers. One of the Tigers has my larger fiberglass exit ramps.
On the Tiger without the larger exit ramps, Temps were down to 405-420 on
climbout with an ambient temp of 98 and a relative humidity of 65% (extremely
humid for the desert). The Tiger with the larger exit ramps was easily 20
degrees cooler.
The mod to the metal baffles consists of cutting both baffles back about 1
inch to 1 1/4 inch and cutting the edge toward the outside on a 45 degree angle.
Make sure ALL of the baffles UNDER the motor are tied together. Close all
leaks. Make sure all of the baffles are sealing well.
Note: on the hotter of the two Tigers, the baffles are adequate, they aren't
great.
Gary
www.AuCountry.com
Home of "Team Grumman"
TeamGrumman-List@matronics.com
http://www.matronics.com/subscribe
Message 3
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--> TeamGrumman-List message posted by: Aucountry@aol.com
In a message dated 07/19/03 02:04:01 PM, lauri.mattila@multi.fi writes:
> Hi
>
> Does somebody have same problem than I have.
> One hose are too short. This hose are between firewall and fuelpump.
> I still waiting answer from Fletchair...
>
> Lauri
> www.multi.fi/kik/grumman
>
Look at my web site under technical, you'll see the recommended hoes for a
Tiger.
Gary
www.AuCountry.com
Home of "Team Grumman"
TeamGrumman-List@matronics.com
http://www.matronics.com/subscribe
Message 4
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| Subject: | Re: Engine temps and cooling for Cheetah |
--> TeamGrumman-List message posted by: bob milligan <flyer.bob@verizon.net>
on 7/20/03 9:36 AM, Aucountry@aol.com at Aucountry@aol.com wrote:
> --> TeamGrumman-List message posted by: Aucountry@aol.com
>
> In a message dated 07/20/03 08:07:55 AM, tjurik@opencagesoftware.com writes:
>
>> I recently got a JPI engine analyzer and find myself concerned with the
>> temps on the rear two cylinders.=A0 I flew for about 3 hours (1.5 each way)
>> and had the following results:
>>
>> 7500 feet - 1 and 2 were not a problem at all.=A0 3 and 4 were around 1300 to
>> 1390 EGT and CHTs were around 390 to 420.=A0 The older analog gauge showed
>> about 400.=A0 I was leaned pretty well.
>>
>> on the return trip 4500 minimal leaning was even worse - 3 and 4 were about
>> 1375 and 400 or more and the analog gauge showed just about redline (450).
>>
>
> Several months ago I sent a post indicating that I had dropped the CHTs 30
> degrees in a Tiger. Yesterday, I flew two Tigers. I had modified the rear
> baffles (the ones that wrap around the bottom of the cylinder head) on
> both=20#3
> and #4 on both Tigers. One of the Tigers has my larger fiberglass exit
> ramps.
> On the Tiger without the larger exit ramps, Temps were down to 405-420 on
> climbout with an ambient temp of 98 and a relative humidity of 65% (extremely
> humid for the desert). The Tiger with the larger exit ramps was easily 20
> degrees cooler.
>
> The mod to the metal baffles consists of cutting both baffles back about 1
> inch to 1 1/4 inch and cutting the edge toward the outside on a 45 degree
> angle.
> Make sure ALL of the baffles UNDER the motor are tied together. Close all
> leaks. Make sure all of the baffles are sealing well.
>
> Note: on the hotter of the two Tigers, the baffles are adequate, they aren't
> great.
>
>
> Gary
> www.AuCountry.com
>
> Home of "Team Grumman"
> TeamGrumman-List@matronics.com
>
>
>
>
>
>
Gary,
Next time you have a Tiger or Cheetah with the lower cowl off, could you
take some pics of your rear baffle mod? It sounds like that could just be
the one remaining thing I need to do to get the HC Cheetah temps where they
should be.
Thanks,
Bob Milligan
Message 5
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--> TeamGrumman-List message posted by:
Subject: Cowling update 2
Good luck! Can't wait to see the pictures of the rhinoplasty, and hear how
the temps faired.
I'm still willing to work with you on more experimentation time. I
certainly won't be availible to take it back until 15 August, and don't need
a plane (really, any plane) until the 24th. After that trip through
September 5th I will be flying CH-46s all over the southwest and won't
likely need my plane. My other proposed time period would be from
mid-October through the annual inspection (hopefully owner-assisted again),
due in November. I'd like to see this project completed in time for me to
buy one of your first cowls to replace mine, so let me know how I can help.
-Brian
-----Original Message-----
From: Aucountry@aol.com [mailto:Aucountry@aol.com]
Subject: TeamGrumman-List: Cowling update 2
Today, we're going to put the new cowling on the Brian's 75 Tiger. With
any
luck, we'll do taxi tests and maybe fly it. I'm anxious. I've been
working on this for 3 years. It's taken a year to fit the inlets.
Wish me luck.
Gary
Message 6
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| Subject: | Re: Lost Cylinder |
--> TeamGrumman-List message posted by: Aucountry@aol.com
In a message dated 07/20/03 11:38:10 AM, roscoeman@fuse.net writes:
> 1) I had heard a noise after oil change that my mechanic said was probably
> a
> collapsed lifter (I thought exhaust leak).
>
> 2) Glad I had altitude
>
> 3) Glad I diverted when I did.
>
> Roscoe
>
>
Was this just a spark plug? Was it something you could easily fix by
replacing the plug?
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: Aucountry@aol.com
In a message dated 07/20/03 12:15:57 PM,
owner-teamgrumman-list-server@matronics.com writes:
> I'm still willing to work with you on more experimentation time.=A0 I
> certainly won't be availible to take it back until 15 August, and don't need
> a plane (really, any plane) until the 24th.=A0 After that trip through
> September 5th I will be flying CH-46s all over the southwest and won't
> likely need my plane.=A0 My other proposed time period would be from
> mid-October through the annual inspection (hopefully owner-assisted again),
> due in November.=A0 I'd like to see this project completed in time for me=20to
> buy one of your first cowls to replace mine, so let me know how I can help.
>
Hey Brian,
As I read your email, it looks like youhave plans for the plane around the
24th of August. Is that true?
The cowling is prepped to prime and sand out little imperfections. Then,
I'm going to paint it. The guy doing the fiberglass work is going to West
'by-God' Virginia someimte during August through September so I won't be doing
any
changes to the cowling then.
We'll work something out.
The cowling looks good.
Gary
www.AuCountry.com
Home of "Team Grumman"
TeamGrumman-List@matronics.com
http://www.matronics.com/subscribe
Message 8
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| Subject: | Re: Engine temps and cooling for Cheetah |
--> TeamGrumman-List message posted by: Aucountry@aol.com
In a message dated 07/20/03 10:03:37 AM, flyer.bob@verizon.net writes:
> Gary,
>
> Next time you have a Tiger or Cheetah with the lower cowl off, could you
> take some pics of your rear baffle mod?=A0 It sounds like that could just=20be
> the one remaining thing I need to do to get the HC Cheetah temps where they
> should be.
>
> Thanks,
>
> Bob=A0 Milligan
>
>
Bring it up and let's get it fixed.
Gary
www.AuCountry.com
Home of "Team Grumman"
TeamGrumman-List@matronics.com
http://www.matronics.com/subscribe
Message 9
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| Subject: | Re: Engine temps and cooling for Cheetah |
--> TeamGrumman-List message posted by: bob milligan <flyer.bob@verizon.net>
on 7/20/03 7:03 PM, Aucountry@aol.com at Aucountry@aol.com wrote:
> --> TeamGrumman-List message posted by: Aucountry@aol.com
>
>
> In a message dated 07/20/03 10:03:37 AM, flyer.bob@verizon.net writes:
>
>
>> Gary,
>>
>> Next time you have a Tiger or Cheetah with the lower cowl off, could you
>> take some pics of your rear baffle mod?=A0 It sounds like that could
>> just=20be
>> the one remaining thing I need to do to get the HC Cheetah temps where they
>> should be.
>>
>> Thanks,
>>
>> Bob=A0 Milligan
>>
>>
>
> Bring it up and let's get it fixed.
>
>
> Gary
> www.AuCountry.com
>
> Home of "Team Grumman"
> TeamGrumman-List@matronics.com
>
>
>
>
>
>
Good idea.
I also have a few more projects:
Install my Au Country Eyebrow.
Overhaul the canopy with new plastic which I have on hand.
Paint and install my Kokaska overlay.
Bob
(Congratulations on the Trout!)
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