Motor Mounts

[Anthony Romano]

The firewall on the Focus is tremendous. I actually drilled lightening holes 
in mine. The question is more relevant in a typical glass fuse with an 1/8" 
firewall type of deal many are using with a nose ring. In this situation 
would you strengthen the firewall to use an A mount?








From: "Bill Pritchett" <phelps15 at comcast.net>
>Reply-To: discussion at nsrca.org
>To: <discussion at nsrca.org>
>Subject: Re: Motor Mounts
>Date: Fri, 2 Jan 2004 09:03:41 -0500
>
>Ed:
>I operate mine on a Focus which has the removable cowling that you 
>describe.  I haven't noticed any problem with the firewall.  You are 
>correct in describing the installation of a nose ring as a "complicated 
>affair".
>Bill
>   ----- Original Message -----
>   From: Ed Miller
>   To: discussion at nsrca.org
>   Sent: Friday, January 02, 2004 8:40 AM
>   Subject: Motor Mounts
>
>
>   Has there been any changes to the Hyde "A" mount recently ?? The one I 
>weighed was 6 ounces not including firewall mounting or engine mounting 
>screws. Seems to me a stiffer/heavier firewall would also need to be used 
>with the A mount as not only is the engine and mount weight hanging off it 
>but the twisting and shaking motion is bared solely by the firewall. Guess 
>it would require a carbon fiber firewall, especially on a large frontal 
>area plane so as to eliminate any flexing of the firewall.  A typical soft 
>mount with nose ring setup actually uses the fuse from the firewall forward 
>as part of the "stressed mounting member" and I know I can do a 
>Rotomount/Nose ring with all hardware and mounting points for under 3.5 
>ounces and have adjustability. Seems the biggest advantage of the A mount 
>is ease of installation and installation in a plane with a removable cowl 
>where installing a nose ring can be a complicated affair.
>   Ed M.

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