Parachute silk as material for Internal "S" sealing

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Dear All,
What is the opinion about using Parachute silk, as material for
Internal "S" sealing ? I have an old parachute, think its material
would be ideal for the aileron sealing of a PIK-20D.
Any comment, god or bad idea ?

[Bob Korves]

Parachute fabric would maybe be OK as long as it is zero porosity.
Permeable materials are called _filters_, not seals. The other question is
whether you can find long enough pieces without seams, etc. that would make
the job more difficult. Considering the total scope of the job, why don't
you just break down and buy some coated ripstop from an outdoor supplier?
$10-20 worth should easily do the entire job.
-Bob Korves

> wrote in message
oups.com...
> Dear All,
> What is the opinion about using Parachute silk, as material for
> Internal "S" sealing ? I have an old parachute, think its material
> would be ideal for the aileron sealing of a PIK-20D.
> Any comment, god or bad idea ?
>

[[email protected]]

Bob Korves wrote:
> Parachute fabric would maybe be OK as long as it is zero porosity.
> Permeable materials are called _filters_, not seals. The other
question is
> whether you can find long enough pieces without seams, etc. that
would make
> the job more difficult. Considering the total scope of the job, why
don't
> you just break down and buy some coated ripstop from an outdoor
supplier?
> $10-20 worth should easily do the entire job.
> -Bob Korves
>
> > wrote in message
> oups.com...
> > Dear All,
> > What is the opinion about using Parachute silk, as material for
> > Internal "S" sealing ? I have an old parachute, think its material
> > would be ideal for the aileron sealing of a PIK-20D.
> > Any comment, god or bad idea ?
> >
Good advise, Bob. Most balloon repair stations will have coated ripstop
nylon.
Clay Thomas

[[email protected]]

Hi Bob,
The size is not a problem, because the seal consists of many smaller
pieces.
What does it mean "coated ropstop" ?

[Eric Greenwell]

wrote:

> Dear All,
> What is the opinion about using Parachute silk, as material for
> Internal "S" sealing ? I have an old parachute, think its material
> would be ideal for the aileron sealing of a PIK-20D.
> Any comment, god or bad idea ?

My ASH 26 has a "Teflon sealing/slip adhesive tape", made by 3M. I
suggest you consider that, as it is impermeable and easy to apply (I'm
told).


--
Change "netto" to "net" to email me directly

Eric Greenwell
Washington State
USA

[Ken Kochanski (KK)]

Aircraft dacron works fine ... see the last page of this article.

http://sailplane-racing.org/Articles/ASW20/asw20_wing.htm

[Bob Korves]

Ripstop nylon has heavier threads every few millimeters to help stop rips
from propagating in the fabric. Coated means that a coating (typically
urethane) has been added to stop air and/or water from passing through the
fabric. REI sells it.
-Bob Korves (former Pik-20d owner -- s/n 20589)
5K LAK-17a
5H Duo Discus

> wrote in message
oups.com...
> Hi Bob,
> The size is not a problem, because the seal consists of many smaller
> pieces.
> What does it mean "coated ropstop" ?
>

[Chuck Lohre]

I couldn't figure out how to install "S" seals in my PIK20D because the
ailerons slide sideways into place and the space was very small. I had
top mylar seals. I added bottom mylar seals and that lowered thermally
speeds by 3 kts. Improved climb as well.

Eric Greenwell wrote:
>
> wrote:
>
> > Dear All,
> > What is the opinion about using Parachute silk, as material for
> > Internal "S" sealing ? I have an old parachute, think its material
> > would be ideal for the aileron sealing of a PIK-20D.
> > Any comment, god or bad idea ?
>
> My ASH 26 has a "Teflon sealing/slip adhesive tape", made by 3M. I
> suggest you consider that, as it is impermeable and easy to apply (I'm
> told).
>
> --
> Change "netto" to "net" to email me directly
>
> Eric Greenwell
> Washington State
> USA

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