[SPAM] Re: fiberglass mesh in foam wings

[Ron Van Putte]

On Dec 21, 2004, at 7:43 PM, Jerry Stebbins wrote:

> Matt, I like your "nice balance in properties", too bad we cannot get 
> them to a known margin. Maybe we should apply for a $100,00.00 Gvt. 
> grant to destruction test a few planes and get some data to play with.

That reminds me of some of my grandmother's recipes, which called for a 
'pinch'  of this and a 'dab' of that.  The most quantitative was 'a 
ball of butter as big as a walnut'.

Ron Van Putte

> From: Rcmaster199 at aol.com
> To: discussion at nsrca.org
> Sent: Tuesday, December 21, 2004 4:00 PM
> Subject: Re: fiberglass mesh in foam wings
>
>
> Carbon Fiber mat or veil, in substantial weight rating, will absorb a 
> great deal of glue. The only reasonable way to do a carbon veiled wing 
> is as Jerry suggests, to roll out practically all the glue and vacuum 
> bag it.
>   
> Be that as it may, in my experience it is an unecessary weight 
> addition. Sure it adds stiffness but for what purpose? These models 
> are not jets or racers that need to be strong at 200+mph. A little 
> more flexibility in the wing is not a bad thing for pattern models. 
> The trick is knowing when the nice balance in properties has been 
> reached.  
>  
> MattK
>  
>  
> In a message dated 12/21/2004 3:48:58 PM Eastern Standard Time, 
> Richard.Fletcher at gs.com writes:
>
> The most expensive solution in this case I believe is the best. CF 
> mesh from Aerospace Composites.
>  
>  
>
> Thanks, Rich
>
>
> -----Original Message-----
> From: discussion-request at nsrca.org 
> [mailto:discussion-request at nsrca.org] On Behalf Of John Ferrell
> Sent: Tuesday, December 21, 2004 3:35 PM
> To: discussion at nsrca.org
> Subject: Re: fiberglass mesh in foam wings
>
> Sounds good to me. There are a lot of ways that work well.
> BTW, some of the drywall mesh is made with very short fibers: if you 
> can tear it easily, don't use it.
> Pattern flyers will prefer the most expensive solution. I think that 
> is a paraphrase of something Dick Hanson said...
>  
> John Ferrell   
>  http://DixieNC.US
> ----- Original Message -----
>  From: Jerry Stebbins
> To: discussion at nsrca.org
> Sent: Tuesday, December 21, 2004 12:37 PM
> Subject: Re: fiberglass mesh in foam wings
>
> John, we put 0.5 oz carbon mat between the foam and sheeting, same 
> amount of slow epoxy ( really thin rolled on to the mat ), with a 
> little brushed around the edges of the foam, and bag them. Gives an 
> incredibly strong wing,almost monocaque, with little added weight. 
> Also add a small piece at fuse end TE to prevent the "pick up bends" .
> Jerry
>  
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