Firewall for Hyde Mount

[Troy Newman]

1/4" nomex alone is not sufficient either. I tried this on my original 
Smaragd

Use the AR (A) its the lightweight AR mount and stick the nose ring in the 
fuse it so much lighter and easier to do......

The ARI works great in a Focus type model with no nose and only a 
cowling....

The best and lightest setup is the AR (A) and a fuse mounted nose ring....

As ffor beefing up the CF nomex firewall with metal or ply strips...why are 
you using a Nomex CF firewall...weight right? Well if weight is the issue 
why add it in the form of the ARI mount and the beefy firewall to support 
it.

Your defeating the purpose of using a $20 chunck of composite material for 
the firewall....and then top that off with the fact you're going to spend an 
extra $40-50 on a motor mount that in the end gives a setup that is heavier 
than just doing it right to begin with

Don't get me wrong the ARI is a good mount...but require a stiff 
firewall....Are you going to save an oz in the material you use just to add 
another 1.5-2ozs back into it just to say you have a cool CF-Nomex 
firewall...its not doing anything for you. The Ar style mounts work perfect 
on the cf-nomex firewall....I use 1/8th" Aircraft grade firewalls in most of 
my models and venture out into the CF-Nomex ones at times.....

My personal opinion, your milage may vary

TN


>From: "Dave Smith" <dfs at navnet.net>
>Reply-To: discussion at nsrca.org
>To: <discussion at nsrca.org>
>Subject: Re: Firewall for Hyde Mount
>Date: Mon, 8 Sep 2003 09:41:56 -0300
>
>Will 1/4"  Nomex be satisfactory as a firewall with this mount?   If
>not,could it be re-enforced with aluminum or plywood strips across the back
>and be O.K?
>
>Dave
>
>----- Original Message -----
>From: "Troy Newman" <troy_newman at msn.com>
>To: <discussion at nsrca.org>
>Sent: Monday, September 08, 2003 1:36 AM
>Subject: Re: Firewall for Hyde Mount
>
>
> > Nope!
> >
> > Been there and tried that with the ARI mount.....need a min of about 
>1/4"
> > Aircraft grade ply for the ARI mount....1/4" CF end Grain will hold it 
>in
> > place but the firewall will flex and change the thrust ine in pulls and
> > pushes. Over time it will start to flex more and more. I found 
>out....and
> > replaced the mount with a nose ring in the fuse style....on that model
> > anyway.
> >
> > This is enough structurally to hold the mount...but no where near stiff
> > enough to keep things lined up properly.
> >
> > TN
> >
> >
> > >From: "Reeves" <reeves at mtaonline.net>
> > >Reply-To: discussion at nsrca.org
> > >To: <discussion at nsrca.org>
> > >Subject: Firewall for Hyde Mount
> > >Date: Sun, 7 Sep 2003 01:46:23 -0800
> > >
> > >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.
> >
> > _________________________________________________________________
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> >
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