Firewall for Hyde Mount

[Dave Smith]

The airplane is a G-202 from Gator plans. With removable front end,nothing
suitable to attach an in- fuselage nose ring to. Yes,it could be attached to
the removable cowl,but not a good idea.
Using aircraft grade ply would require at least 3/16th,maybe even 1/4 thick
firewall.   I doubt 1/8th would be stiff enough by itself.

Suitably braced the Nomex will be stiff enough and lighter than either
3/16th or1/4 aircraft ply would be with the AR mount.

Dave

----- Original Message -----
From: "Troy Newman" <troy_newman at msn.com>
To: <discussion at nsrca.org>
Sent: Tuesday, September 09, 2003 1:13 AM
Subject: Re: Firewall for Hyde Mount


>
> 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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