The Murphy Builders Site

I have started covering the flapperon and am presently attaching the
flannel batten material to the leading edge. Could some body please define
the term "sufficient adhesive to secure the batten"? I would assume the
batten material should be able to move freely as the fabric is being heat
shrunk so it does not bunch up under the fabric?

Charlie E. 802R




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Hi Charlie !

You should use spots of Poly-Tack all around and a few spots
in the middle. If you don't glue it down, it could bunch up ....

I'm assuming it is Polyester Batting (1/4 or 1/2" thick ...)

Not too much adhesive, because the air has to flow through
the batting & out .... to avoid pinholes in the fabric. Don't worry
about it touching the top wing skin - you can use a long piece
of slotted wood to bend it up - OR -- better yet, add Mylar tape
to the flapperon top front, to you can have a tight fit with
no wear. Anyplace that sells stuff for gliders will have the tape -
it's SOP for gliders .... air gaps are drag ....


......bobp
bobp@prosumers.ca
bobp@pattersys.com
http://www.Pattersys.com
http://www.amway.ca/BobPatterson

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On Thursday 18 August 2011 22:39:57 Charlie Eubanks wrote:

I have started covering the flapperon and am presently attaching the
flannel batten material to the leading edge. Could some body please
define
the term "sufficient adhesive to secure the batten"? I would assume the
batten material should be able to move freely as the fabric is being heat
shrunk so it does not bunch up under the fabric?

Charlie E. 802R




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Hi Keith & Bob P.
As you can see there is a lot I don't know about using the polyester
padding. I have covered my Luscombe and J-3 wings over the years but the
fabric was cemented at both the leading and trailing edges (not a sewed
envelope). As I understand it, the padding can only be used under the
fabric when the fabric just wraps around the leading edge, it should not
be used under a overlapped cemented seam. The padding is supposed to
provide an escape route for the coating solvent vapors and prevent
pinholes thru the finish. The padding I am using is 1/8 thick but compress
to .020 under load. My concern was if I glued it down to well it might not
be able to move during the shrinking process and cause wrinkles in the
fabric.
Thanks for help.
Charlie E. 802R
----- Original Message -----
From: "Bob Patterson" <bobp@prosumers.ca>
To: <rebel-builders@dcsol.com>
Sent: Friday, August 19, 2011 12:07 AM
Subject: Re: [rebel-builders] Covering Flapperon

Hi Charlie !

You should use spots of Poly-Tack all around and a few spots

in the middle. If you don't glue it down, it could bunch up ....

I'm assuming it is Polyester Batting (1/4 or 1/2" thick ...)

Not too much adhesive, because the air has to flow through

the batting & out .... to avoid pinholes in the fabric. Don't worry
about it touching the top wing skin - you can use a long piece
of slotted wood to bend it up - OR -- better yet, add Mylar tape
to the flapperon top front, to you can have a tight fit with
no wear. Anyplace that sells stuff for gliders will have the tape -
it's SOP for gliders .... air gaps are drag ....

......bobp

bobp@prosumers.ca
bobp@pattersys.com

http://www.Pattersys.com

http://www.amway.ca/BobPatterson

De-fenestrate now ! Linux is the answer !

Any views expressed in this message are those of the individual sender
and do not necessarily reflect the views of any other entities or

persons.

Any action taken as a result of the contents of this email is totally
the responsibility of the reader.

http://www.danasoft.com/sig/pssignTux.jpg

On Thursday 18 August 2011 22:39:57 Charlie Eubanks wrote:

I have started covering the flapperon and am presently attaching the
flannel batten material to the leading edge. Could some body please
define
the term "sufficient adhesive to secure the batten"? I would assume the
batten material should be able to move freely as the fabric is being
heat shrunk so it does not bunch up under the fabric?

Charlie E. 802R