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From: Lehanover@aol.com
Message-ID: <1d5.3927dcd4.2f7adba0@aol.com>
Date: Tue, 29 Mar 2005 11:26:08 EST
Subject: Re: [FlyRotary] AN fittings..
To: flyrotary@lancaironline.net
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In a message dated 3/29/2005 10:14:16 AM Central Standard Time, 
Dastaten@earthlink.net writes:

<< Considering I am going to be sending the oil  into a fitting that is 
 connected to an aluminum bypass block on the pedestal, in OUR (rotary)  
 situations is this a critical issue? And what is/was the rationale for 
 not using AL fittings on the Lyc's? Dissimilar metals? Heat expansion 
 stresses? Fatigue?
  
 Dave >>

Fatigue. 

Aluminum has a short fatigue life. 

The engine is moving around on the mount all of the time. All hose runs to 
the engine should have a curve and some slack in them to account for this 
movement. The hose is clamped away from the engine with Adel or as part of another 
hose end as in a bulkhead fitter or similar. Refer to your hose catalogue for 
acceptable methods of installation. 

Lynn E. Hanover