[NSRCA-discussion] Firewall Material

[Bob Kane]

I have made very light and strong firewall material by laminating 1/64 plywood on both sides of 1/4" end grain balsa using polyurethane glue.  Add 3/32" balsa disks where you need a blind nut.  This system has worked very well in my now 4 season old Temptation with a YS160DZ/Hyde mount. It also offers a wide gluing surface to attach the firewall to the inside of the fuselage.

You have to use a lot of weight to hold everything together while the polyurethane cures.


Bob Kane
getterflash at yahoo.com


--- On Thu, 1/28/10, Pascoe,Tim [Burlington] <Tim.Pascoe at ec.gc.ca> wrote:

> From: Pascoe,Tim [Burlington] <Tim.Pascoe at ec.gc.ca>
> Subject: [NSRCA-discussion] Firewall Material
> To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org>
> Date: Thursday, January 28, 2010, 10:29 AM
> 
> 
> 
>  
>  
> 
> 
> 
> 
> 
> 
>  
> 
> 
> 
> I’m
> working on a pair of Genesis’ for next
> season. In the past, most of my airplanes have been wood,
> and while I have some
> experience with composite airframes, I’m far from
> being an expert. I’m
> ready to put in the firewalls, and I’d like some
> suggestions as to what
> the best material will be for this. I’d like to keep
> the weight down (don’t
> we all), and was wondering if laminated carbon/balsa panels
> such as those
> available at the Composites Store (http://www.cstsales.com/carbon_sandwich_panel.html)
>  are worth it, difficult to work with, etc. Also, do
> panels like this
> require some special reinforcement where the bolts go
> through? Special epoxies
> for adhering to the fuse, etc.? Or should I just be using
> aircraft grade
> plywood? 
> 
> 
>   
> 
> Any suggestions
> would be great. 
> 
> 
>   
> 
> Tim
> Pascoe 
> 
>    
> 
> 
> 
>  
> 
> 
> 
> -----Inline Attachment Follows-----
> 
> _______________________________________________
> NSRCA-discussion mailing list
> NSRCA-discussion at lists.nsrca.org
> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion