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[rebel-builders] windsield install

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Ron Shannon

[rebel-builders] windsield install

Post by Ron Shannon » Sun Feb 19, 2012 8:05 pm

My channel goes all the way around. The channel does more than just support
vertical load. When carried all around, it makes layup of the fiberglass
retainer more uniform, and provides a uniform line between outside sealant
under the lower retainer flange and the topside sealant between the
windshield and retainer. The acrylic windshield moves quite a bit with
thermal expansion. Without rubber channel on the sides, the edge of the
acrylic will chafe against the fuselage metal there too, as it expands and
contracts.

For more info, search my web site using "windshield" and "retainer" "rubber
channel"

Ron
http://n254mr.com


On Tue, Sep 14, 2010 at 7:51 AM, Jones, Michael <
Michael.Jones@snclavalin.com> wrote:
hi guys

by the manual the windshield has a rubber u channel on the bottom to
protect it.

my question is how far around the bottom have others installed this
rubber, for example on where it sits on top dash, or all the way around
the bottom edge of windshiled so the windshield does not touch fuselage
anywhere

cheers

mike#007


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Jones, Michael

[rebel-builders] windsield install

Post by Jones, Michael » Sun Feb 19, 2012 8:05 pm

Did you glue the channel on place on windshield, before my windshield
broke I found the channel kept slipping off

Cheers

mike

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
Ron Shannon
Sent: September 14, 2010 11:50 AM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] windsield install

My channel goes all the way around. The channel does more than just
support
vertical load. When carried all around, it makes layup of the fiberglass
retainer more uniform, and provides a uniform line between outside
sealant
under the lower retainer flange and the topside sealant between the
windshield and retainer. The acrylic windshield moves quite a bit with
thermal expansion. Without rubber channel on the sides, the edge of the
acrylic will chafe against the fuselage metal there too, as it expands
and
contracts.

For more info, search my web site using "windshield" and "retainer"
"rubber
channel"

Ron
http://n254mr.com


On Tue, Sep 14, 2010 at 7:51 AM, Jones, Michael <
Michael.Jones@snclavalin.com> wrote:
hi guys

by the manual the windshield has a rubber u channel on the bottom to
protect it.

my question is how far around the bottom have others installed this
rubber, for example on where it sits on top dash, or all the way
around
the bottom edge of windshiled so the windshield does not touch
fuselage
anywhere

cheers

mike#007


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Ron Shannon

[rebel-builders] windsield install

Post by Ron Shannon » Sun Feb 19, 2012 8:05 pm

Nope. That's partly because as you do the trimming, sanding, and fitting of
the windshield, the rubber channel will probably have to go on and off the
windshield several times as you trim and fit the bottom edge. (As I recall,
mine went on and off the bottom so many times, it got a little dinged up, so
I cut another for final assembly.) I don't see why you shouldn't use 3-4
strips of blue painter's tape to hold it on during the fitting process,
except you might run a risk of pulling the protective covering off the
windshield before you want to. As per the manual, after trimming and
fitting, the windshield and the rubber channel are heavily taped into
position before layup of the fiberglass retainer. The retainer is formed
over the taped channel and holds it in place.

The vertical side edges -- which do not have rubber channel, of course --
may need to be clamped to the fuse during the retainer layup process. After
protecting the acrylic surface with lots of tape and paper, I used bar
clamps and pieces of plywood. See http://n254mr.com/node/1214, which shows
the clamps and beginning of the taping. Roger Hoffman also has good photos
of this (and everything else!) on his site, at
http://tincantimes.dcsol.com/default4.htm . He managed to get the side edges
pulled in with tape -- much better if you can do it.

I'm sorry your windshield broke. When it's trimmed and fitted, very little,
if any, pressure should be required for it to sit properly in place all by
itself. My own "clamp persuasion" to curl the side vertical edges around may
not be needed by others, depending on the "set" the windshield has taken
during storage, etc. I sure wouldn't have tried to clamp it anywhere else.
If the windshield is properly trimmed and fitted, tape should be adequate to
hold it everywhere else -- and in most cases, probably along the side edges
too.

Takes a ton of patience to trim and fit. An extra set of hands and eyes sure
helps. My windshield probably went on and off the fuse 50-60 times to get it
to where I finally decided it was good enough.

Ron


On Tue, Sep 14, 2010 at 10:04 AM, Jones, Michael <
Michael.Jones@snclavalin.com> wrote:
Did you glue the channel on place on windshield, before my windshield
broke I found the channel kept slipping off

Cheers

mike



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