Mailing List flyrotary@lancaironline.net Message #39128
From: M Roberts <montyr2157@alltel.net>
Subject: Engine mounts
Date: Wed, 22 Aug 2007 22:25:31 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Robert,
 
Funny you should ask. I have been working on this problem for a while. Those devils at Mazda seem to have conspired to make the Renesis very hard to design a mount for. They took away the point for a mount on top of the engine. They moved the engine mount bolts all over the place and put a lot of exhaust and plumbing in the way . It was as if they sat down and said....how can we make this engine really really hard to instal in an airplane.
 
I would have to agree with Lynn on this one. I am going to use the plate option. I will be modifying it so that it is lower profile. The plate will be the size of the engine pan and the bolts will go in from the side. The standard conical mounts will be on the sides as close to the engine as I can get them. Imagine a hybrid between a bed mount and a P51 beam mount.
 
It is a difficult problem if you have a tight cowl.
 
Don't rely on the engine mount to help you if you loose a prop blade!!
 
Put at least a 3/16 safety cable on the engine.  
 
There are some design suggestions here:
 
 
(it is a huge PDF file so be forewarned)
 
Monty
 
 
Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster