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| Ray, assuming those are Barry Mounts, then there are two problems. First the "snubbing washers" are too small. They should exceed the diameter of the rubber bushing. The Barry catalogue relates the proper snubbing washer to the diameter and thickness of the bushing. Secondly, in one photo it appears that the Barry Rubber bushing is not drawn down into the receiver. This would create an unstable situation where the Barry Bushing can tilt. Of course, I have never worked with one if the CCI mounts so I might be missing something. Jerry
On Jan 12, 2008, at 7:54 PM, Bill Bradburry wrote: Yes the spacer tube is inside and the bolts are torqued down on it. What is happening is that the rubber that the bushing is made of is crushing down. It is too soft to support the weight of the engine with the PSRU on it at that end. I would imagine that the engine/PSRU center of gravity is close to those bushings and they are supporting 90% or so of the total weight. The two bushings at the rear are ok, but they have very little weight on them. Bill B
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Klepeis
Sent: Saturday, January 12, 2008 6:19 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Motor Mount Bushings Do you have the correct length spacer tube inside. That would allow the bushing to crush down like that. if it is not the right length ----- Original Message ----- Sent: Saturday, January 12, 2008 5:10 PM Subject: [FlyRotary] Motor Mount Bushings I noticed that the bushings that Fred furnished with the motor mount plate are not up the job. The bottom half has crushed down by close to ¼ inch. I wonder what mounts the rest of you are using? The lower picture is of the left (pilot) side and the top is the copilot side. Both are on the front. The rear seems to be holding up ok. I first noticed this when I saw that my spinner was not aligned with the cowl very well… Any suggestions would be greatly appreciated. Thanks, Bill B <image001.jpg><image002.jpg>
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