Today's Message Index:
----------------------
1. 07:06 AM - Re: dented wing (flyv35b)
2. 07:49 AM - Re: Cowling update (Phil Kelsey)
3. 04:26 PM - Re: Cowling update (Gary Vogt)
Message 1
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The spar may not be bent but the skin appears to be buckled in front of
the flap rub strip. The flap also looks like it has a depression in it.
Makes me wonder if the flap didn't hang up and cause the damage some
time in the past.
Cliff
----- Original Message -----
From: Gary Vogt
To: Teamgrumman List
Sent: Monday, January 17, 2011 4:24 PM
Subject: TeamGrumman-List: dented wing
Three pics. I set a straight edge along the rear spar. It isn't
bent. Just looks weird.
Message 2
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Gary, Seems pretty clear to me. Use your trim lines, install cowl then shim
motor mount to achieve correct spinner position. Am I missing something?
Phil
From: owner-teamgrumman-list-server@matronics.com
[mailto:owner-teamgrumman-list-server@matronics.com] On Behalf Of Gary Vogt
Sent: Monday, January 17, 2011 19:22
Subject: TeamGrumman-List: Cowling update
This is just for the two people who ordered a cowling. {grin}
This weekend, Composite Dave and I fitted a cowling to my Tiger to verify
the scribe lines. For all practical purposes, we fitted the cowling (all
but the trim to fit on the upper cowlings) in two days; probably 10 hours
total.
I wanted to fit a cowling to my plane because the 'trim-to-fit' scribe lines
on the four cowlings I installed early last year were close, but not close
enough. I probably spent WAAAAY too much time fitting the cowlings to those
4 planes because I didn't trust the trim lines. For these next two
cowlings, I wanted to know where the trims lines were supposed to be. After
installing one of the cowlings last year, I asked the Team for dimensions
and spacers particular to different planes. I got a half-dozen responses;
not really enough to make a statistical judgement.
My concern was that if I sent out a bunch of cowlings to be installed by
someone not familiar with the installation, serious fitting mistakes might
be made.
The final trimming, filing, sanding and fitting of a new Jaguar cowling to
my plane came out to be right on the original trim lines (with the exception
of the lower right hand corner). On the lower right hand corner, we had to
sand/file 'into' the trim line by about .050 inches. So, if you drew a line
between the top of the right side of the lower cowling (where it fits
adjacent to the fuselage) and the bottom of the lower cowling, you'll see
the new trim line taper to make the bottom a little shorter. Less than 16th
of an inch. As fit, using 7/64 inch holes for #8 screws (so, there is a
little play in the screw holes) the trim lines were very close. I was very
surprised.
So, if you want to install the cowling with the cowling as fitted to my
plane, installation is very straight forward. I'd trim to the outside of
the trim lines on the sides and to the trim lines on the bottom. The
biggest trial and error step is trying to work with something too big in two
planes. (Geometric planes) Your most difficult decision will be how many
shims to add/subtract from your engine mount to make your installation fit
the Jaguar cowling.
If none of this makes any sense, don't worry. You're probably not alone.
By-the-way, Composite Dave was VERY surprised how difficult it was to decide
where to file/trim and by how much. We must have spent a combined two hours
discussing how much material to remove.
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Message 3
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| Subject: | Re: Cowling update |
Hi Phil,
No, that's the bottom line. I made it way too hard in the past.
Gary
________________________________
From: Phil Kelsey <Phil@ReliantAir.com>
Sent: Tue, January 18, 2011 7:47:28 AM
Subject: RE: TeamGrumman-List: Cowling update
Gary, Seems pretty clear to me. Use your trim lines, install cowl then shim
motor mount to achieve correct spinner position. Am I missing something?
Phil
From:owner-teamgrumman-list-server@matronics.com
[mailto:owner-teamgrumman-list-server@matronics.com] On Behalf Of Gary Vogt
Sent: Monday, January 17, 2011 19:22
Subject: TeamGrumman-List: Cowling update
This is just for the two people who ordered a cowling. {grin}
This weekend, Composite Dave and I fitted a cowling to my Tiger to verify the
scribe lines. For all practical purposes, we fitted the cowling (all but the
trim to fit on the upper cowlings) in two days; probably 10 hours total.
I wanted to fit a cowling to my plane because the 'trim-to-fit' scribe lines on
the four cowlings I installed early last year were close, but not close enough.
I probably spent WAAAAY too much time fitting the cowlings to those 4 planes
because I didn't trust the trim lines. For these next two cowlings, I wanted to
know where the trims lines were supposed to be. After installing one of the
cowlings last year, I asked the Team for dimensions and spacers particular to
different planes. I got a half-dozen responses; not really enough to make a
statistical judgement.
My concern was that if I sent out a bunch of cowlings to be installed by someone
not familiar with the installation, serious fitting mistakes might be made.
The final trimming, filing, sanding and fitting of a new Jaguar cowling to my
plane came out to be right on the original trim lines (with the exception of the
lower right hand corner). On the lower right hand corner, we had to sand/file
'into' the trim line by about .050 inches. So, if you drew a line between the
top of the right side of the lower cowling (where it fits adjacent to the
fuselage) and the bottom of the lower cowling, you'll see the new trim line
taper to make the bottom a little shorter. Less than 16th of an inch. As fit,
using 7/64 inch holes for #8 screws (so, there is a little play in the screw
holes) the trim lines were very close. I was very surprised.
So, if you want to install the cowling with the cowling as fitted to my plane,
installation is very straight forward. I'd trim to the outside of the trim
lines on the sides and to the trim lines on the bottom. The biggest trial and
error step is trying to work with something too big in two planes. (Geometric
planes) Your most difficult decision will be how many shims to add/subtract
from your engine mount to make your installation fit the Jaguar cowling.
If none of this makes any sense, don't worry. You're probably not alone.
By-the-way, Composite Dave was VERY surprised how difficult it was to decide
where to file/trim and by how much. We must have spent a combined two hours
discussing how much material to remove.
http://www.matronics.com/Navigator?TeamGrumman-List
http://forums.matronics.com
http://www.matronics.com/contribution
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