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<DIV><FONT size=2> Reeves, I did install 1/2 inch wooden
dowels in the honeycomb carbon firewall, and well as 1/8 ply on the backside to
hold the 6-32 blind nuts. If you send me your e-mail address I can send
you some pics of my set-up.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Mike</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>mdarr00@comcast.net</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=reeves@mtaonline.net href="mailto:reeves@mtaonline.net">Reeves</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, September 08, 2003 7:06
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Firewall for Hyde
Mount</DIV>
<DIV><BR></DIV>
<DIV><FONT size=2>Hi Mike, Thanks for the help. Did you place dowels or wood
inserts for the engine mount bolts inside the carbon nomex to prevent it
from crushing? Reeves.</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=mdarr00@comcast.net
href="mailto:mdarr00@comcast.net">mdarr00@comcast.net</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, September 07, 2003 1:26
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Firewall for Hyde
Mount</DIV>
<DIV><BR></DIV>
<DIV><FONT size=2> Reeves, correct me if I am wrong.
The way I understand it, you are applying carbon fiber to both sides of 1/4
inch balsa to form your firewall. If that is correct, I would say that
would be more than sufficient. I do not have any experience with that
exact set-up, but I use 1/8 inch honeycomb carbon fiber sheet for my
firewalls, and using the same engine mount you are that supports an O.S. 140
RX. I am building a new plane with the same set-up with a 3M 170, and
I am very confident that it will be plenty strong enough. The Hyde
mount eliminates enough of the vibration from the firewall, that you would
be surprised what you would be able to get away with. You may want to
add a vertical piece of 1/2 inch aluminum angle stock to the back side of
the firewall for the two bolts that support the nose ring support, to help
prevent any flexing that may occur in the firewall. I do not use that
method on my plane, but that was a suggestion to me from Merle Hyde when
mounting that mount on a thin firewall. The carbon fiber is so strong,
I do not feel it is necessary, but you may feel it is.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Just my two cents, hope this helps,</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Mike Darr</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=reeves@mtaonline.net
href="mailto:reeves@mtaonline.net">Reeves</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, September 07, 2003 5:46
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Firewall for Hyde
Mount</DIV>
<DIV><BR></DIV>
<DIV><FONT size=2>Hi, I plan to install a Hyde ARI (A) mount in a new
Synergy I am building. This is the mount with the nose ring incorporated
on an aluminum yoke. I was going to use carbon fiber end grain balsa
composite 1/4" thick for the firewall material. Is this material
stiff enough? Anyone else using this setup with success? Thanks,
Reeves in Alaska. </FONT></DIV></BLOCKQUOTE>
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