[RocketsNW] Silk Lay-Ups

[Robert Braibish]

This may be all well and good, just make sure to get something "silky" for the Mrs!  Especially if one is going to be "dressing" your rockets in silk!  It may be cheaper than CF but that is little consolation when one starts cuttin' up the summer PJ's and gets caught!  ;-o
-----Original Message-----
From: Sam Grado <vonrang at yahoo.com>
Date: Mon, 1 Feb 2010 11:53:35 
To: CAMERON Kenneth A<CAMERON.Kenneth at deq.state.or.us>; <greg at blastzone.com>
Cc: <rockets at rocketsnw.com>
Subject: Re: [RocketsNW] Silk Lay-Ups

Silk is less expensive than CF. About the same to a little less in cost than some grades of seaglass cloth. It may possess better flexural strength than 'glass cloth with less overall weight. Just something to explore in view of the cost of CF. Could be a good augment to CF.

Sam Grado
TRA L2

"If you're going to build it, build it from scratch"!

sales at pvconly.com
http://www.pvconly.com
http://www.sugarshot.org/bios/sgrado.html
http://groups.google.com/group/PVC-Motor-Rockets

--- On Mon, 2/1/10, greg at blastzone.com <greg at blastzone.com> wrote:


From: greg at blastzone.com <greg at blastzone.com>
Subject: Re: [RocketsNW] Silk Lay-Ups
To: "CAMERON Kenneth A" <CAMERON.Kenneth at deq.state.or.us>
Cc: rockets at rocketsnw.com
Date: Monday, February 1, 2010, 1:39 PM


So whats the upside here?  Is silk less expensive than fiberglass or other
composites?  Better in some way?  Or is this just a desire to try something
different for fun?


On Mon, 1 Feb 2010 11:16:45 -0800, "CAMERON Kenneth A"
<CAMERON.Kenneth at deq.state.or.us> wrote:
> Greetings
> While not directly tied to rocketry, I can attest to the fact that silk
> can increase resistance to flexing in some instances.  As a traditional
> archer who teaches folks how to make wooden longbows and flatbows, I've
> used silk as backing on an English longbow and it increased the pull
> weight (i.e. stiffness) from 55 pounds to 75 pounds.  This was with two
> layers of raw silk cloth attached with carpenters glue.  I also know
> that multi-layer varnished silk was used as light armor (though I prefer
> chain mail, I teach classes in that, too).  Imagine the look on the
> clerk's face at the fabric store when you ask if she knows how well silk
> stands up to speeds above mach one.
> Ken Cameron
> Brewer to the Gods of Valhalla (at least that's who the said they were)
> 
> -----Original Message-----
> From: rockets-bounces at rocketsnw.com
> [mailto:rockets-bounces at rocketsnw.com] On Behalf Of Bill Munds
> Sent: Monday, February 01, 2010 10:53 AM
> To: vonrang at yahoo.com; Dave Randall; rockets at rocketsnw.com
> Subject: Re: [RocketsNW] Silk Lay-Ups
> 
> 
> Sam,
> 
> Why not test it?  Newspaper and white glue work pretty well structurally
> (Jr. High science project).
> 
> I would think that silk being pretty strong by itself would work if in
> multiple layers in different directions.
> 
>  
> 
> Hmmm.......
> 
> 
> 
> 
> 
>  
>> Date: Mon, 1 Feb 2010 07:33:48 -0800
>> From: vonrang at yahoo.com
>> To: dmrandall at gmail.com; rockets at rocketsnw.com
>> Subject: Re: [RocketsNW] Silk Lay-Ups
>> 
>> Yes, silk fabric for axial flexture and sheer strength.
>> 
>> 
>> Sam Grado
>> TRA L2
>> 
>> "If you're going to build it, build it from scratch"!
>> 
>> sales at pvconly.com
>> http://www.pvconly.com
>> http://www.sugarshot.org/bios/sgrado.html
>> http://groups.google.com/group/PVC-Motor-Rockets
>> 
>> --- On Mon, 2/1/10, Dave Randall <dmrandall at gmail.com> wrote:
>> 
>> 
>> From: Dave Randall <dmrandall at gmail.com>
>> Subject: Re: [RocketsNW] Silk Lay-Ups
>> To: "Sam Grado" <vonrang at yahoo.com>
>> Date: Monday, February 1, 2010, 8:40 AM
>> 
>> 
>> Sam,
>> 
>> I've embedded different cloths in a couple of rockets for decorative
>> purposes (not strength)... Is that what you're asking about, or is it
>> for strength?
>> 
>> Dave
>> 
>> On Mon, Feb 1, 2010 at 4:56 AM, Sam Grado <vonrang at yahoo.com> wrote:
>> > Has anyone here worked with silk cloth for airframe lay-ups?
>> >
>> > Sam Grado
>> > TRA L2
>> >
>> > "If you're going to build it, build it from scratch"!
>> >
>> > sales at pvconly.com
>> > http://www.pvconly.com
>> > http://www.sugarshot.org/bios/sgrado.html
>> > http://groups.google.com/group/PVC-Motor-Rockets
>> >
>> >
>> >
>> >_______________________________________________
>> > Rockets mailing list
>> > Rockets at rocketsnw.com
>> > http://mx1.blastzone.com/mailman/listinfo/rockets
>> >
>> >
>> 
>> 
>> 
>> -- 
>> - Dave
>> 
>> 
>> 
>> 
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