Today's Message Index:
----------------------
1. 08:20 AM - Jaguar cowl, Gap on top near flywheel (bvnj@yahoo.com)
2. 10:59 AM - Contact cement (Gary Vogt)
3. 11:38 AM - Re: Jaguar cowl, Gap on top near flywheel (Gary Vogt)
4. 11:39 AM - Re: Jaguar cowl, Gap on top near flywheel (Gary Vogt)
Message 1
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| Subject: | Jaguar cowl, Gap on top near flywheel |
Hi Gary,
There is an unsealed gap between the cowl and the on top of the engine. Plea
se see the pic. I imagine it lets some cooling air escape. Have you been sea
ling it somehow? If you have, could you please post some pics?
Thank you,
-Boris
Message 2
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I tried the 3M 1300 contact cement something like 16 or 20 years ago. I didn't
like it. It dried too fast. It gummed into little balls if you tried to brush
it out even. And it didn't stick worth a damn. So, what the hell, I'm game for
trying it again.
Why?
Customer came in with a canopy seal that needed replacing. The dreaded glued on
canopy seal. He also brought in some 3M 1300.
Side note: I used the 1 1/4 inch foam tape on a guys plane 5 years ago. Other
than the edge getting frayed, it has held up well.
So, I followed the instructions on the can. 4 minute working time is a bit
short . . . by, hey, let's give it a go. Lot's of people swear by (at) this
stuff.
I got the seal, laid it out on masking paper taped to the wing, and proceeded to
clean the seal's mating surface. Then I wiped the canopy with MEK and surface
cleaner. Then wiped down the seal with the MEK one last time.
I used a short bristled brush to apply the 1300 to the canopy bow. As long as
I
just brushed once, no problem. Then to the seal. By now, the canopy was dry.
By the time I lifted the seal from the masking paper, it was dry too.
I then climbed into the cabin and proceeded to install. At first, the 1300
worked pretty well. It seamed to stick fine. When finished, I thought, "This
just might work." Using a homemade roller, I pressed the seal against the
canopy as hard as I could. I worked the entire mounting surface back and forth
about 6 times.
I cleaned up the making tape I used for a guide, cleaned up all the excess glue,
and thought, "That was too easy."
20 minutes later, I noticed the corners were pulling down. I'd seen this on
other installs so I taped the corners in place. I closed the canopy to hold it
against the bow. 24 hours later, I opened the canopy and removed the tape. The
glue seamed to be holding at the edge which had been pressed against the bow.
"Good enough." Some 30 minutes later and the entire seal was coming off.
After spending the next hour removing the 1300 with MEK, I wiped off the surface
of the bow using the same previous techniques, cleaned the seal using the same
previous techniques, and applied my favorite contact cement.
I started using DAP Weldwood Original contact cement about 15 years ago. I
gives about 20 minutes of working time and sticks very well.
Message 3
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| Subject: | Re: Jaguar cowl, Gap on top near flywheel |
OOps. Isn't that mentioned in the Instructions?
Use baffle seal material and fabricate the seal. You can rivet into the
fiberglass. Use the broad head baffle seal rivets. I'll see if I can attach a
photo. After loading 2000 photos from my trip to Philippines, Yahoo crashes
when I open iPhoto. Can't sort through the pics I guess.
________________________________
From: "bvnj@yahoo.com" <bvnj@yahoo.com>
Sent: Sat, August 6, 2011 8:16:06 AM
Subject: TeamGrumman-List: Jaguar cowl, Gap on top near flywheel
Hi Gary,
There is an unsealed gap between the cowl and the on top of the engine. Please
see the pic. I imagine it lets some cooling air escape. Have you been sealing it
somehow? If you have, could you please post some pics?
Thank you,
-Boris
Message 4
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| Subject: | Re: Jaguar cowl, Gap on top near flywheel |
Boris,
I talked to the FAA LA-ACO and I can make the baffle with the smaller opening
for the oil cooler. I need to get the minor change approved, but, I think that
will go pretty quickly.
Gary
________________________________
From: "bvnj@yahoo.com" <bvnj@yahoo.com>
Sent: Sat, August 6, 2011 8:16:06 AM
Subject: TeamGrumman-List: Jaguar cowl, Gap on top near flywheel
Hi Gary,
There is an unsealed gap between the cowl and the on top of the engine. Please
see the pic. I imagine it lets some cooling air escape. Have you been sealing it
somehow? If you have, could you please post some pics?
Thank you,
-Boris
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