Today's Message Index:
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1. 06:41 PM - Re: If You Got This Email, You Haven't Made A Contribution Yet! :-) (Davie Alison)
2. 06:51 PM - Re: Homebuilt Grumman (teamgrumman@aol.com)
Message 1
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| Subject: | Re: If You Got This Email, You Haven't Made A Contribution |
Yet! :-)
27% off of all avgas downloaded from the web site.
"Ronald Millman,CPA" <ronmillmancpa@msn.com> wrote:
I read that you are asking for money. I have a 1977 tiger. What
benefit would I receive?
Ron Millman AA5B N28560.
----- Original Message -----
From: Matt Dralle
To: teamgrumman-list@matronicscom
Sent: Friday, November 09, 2007 12:36 AM
Subject: TeamGrumman-List: If You Got This Email, You Haven't Made A Contribution
Yet! :-)
Dear Listers,
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Message 2
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| Subject: | Re: Homebuilt Grumman |
If your intention is to make the Cheetah go slower, the cowl flaps make
sense. As designed, there are NO over-heating problems with Grummans.
The design of the cooling air exit ramp is one of the better designs on
the entire plane. Trust me. I've tried 6 different designs for the
cooling air exit. THe stock design is the least parasitic and cooling
drag.
-----Original Message-----
From: Ray Toews <raytoews@yahoo.com>
Sent: Mon, 12 Nov 2007 14:39:14 -0800 (PST)
Subject: Homebuilt Grumman
My name is Ray, I live in Fort Vermilion, AB Canada.
I own a 1977 Grumman Cheetah with 2500 hrs TT, 500 smoh.
I recently installed a Blue Mountain Avionics EFISand will be
installing their autopilot soon.
How can I do this in a certified airplane?
InCanada we have a fairly new category called Owner Maintenance. In OM
I can do anything to my airplane except violate the original Type
Certificate, but as the owner/pilot I sign offall
maintenance/modifications myself.
Mine is the first Grumman in Canada into OM. The main requirement is to
stamp an X onto all the data plates, airframe, engine and propellor and
it can't be reversed.
Which, for all intents and purposes turns it into a homebuilt.
I see you are doing all kinds of mods, cowlings etc. and needan
airplane to do them to.
The downside is I live a long ways away, the very top of Alberta,and I
am not allowed to fly into the USA as you don't have OM category and
don't recognize it. Ironicif I had an airplane I had built entirely
myself I could fly it into USA with very little restriction but because
itWAS a certified airplane which I can maintain myself it is not
allowed.
I think it is because the FAA doesn't want you to know about it because
it makes so much sense :)
If I can be of any help to you I would be willing to do what I could. I
own three business's and am into local politics so time is my greatest
issuebut I enjoy trying to make my Grumman go faster.
I have been contemplating doing something with the exhaust pipe
sticking out the bottom of the cowl, I am not an aerodynamics expert
but I do know that anything sticking out into the wind creats drag so
eliminating that pipe and bending it back to come out the rear of the
cowl would help. A small piece of stainless on the belly would
eliminate problems with that. I have looked at Power Flow and think $4k
is too much to pay, equal length headers are not rocket science and
mufflers are not hard to build.
Also I have been contemplating removing the ducts on the bottom of the
cowl and installing cowl flaps instead. I did this on a Citabria many
years ago with dramatic positiveresults as regards cylinder head temps
and cabin heat. Overheating is not a problem, it seldom gets that warm
up here.
Ray Toews
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