Mailing List flyrotary@lancaironline.net Message #47362
From: Greg Ward <gregw@onestopdesign.biz>
Subject: Fw: [FlyRotary] Re: Fw: Belly Scoop
Date: Thu, 23 Jul 2009 01:01:23 -0700
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
 
----- Original Message -----
From: Greg Ward
Sent: Wednesday, July 22, 2009 11:20 PM
Subject: Re: [FlyRotary] Re: Fw: Belly Scoop

You're right to an extent Al.  We are going flex from the oil cooler to the exterior of the scoop, rigid to the entrance of the cowling, and flex to the engine.  We have flex at the radiator connections, rigid to the cowling, and flex to the engine.  Everything is tied off, just not apparent in these images.
Greg
----- Original Message -----
From: Al Wick
Sent: Wednesday, July 22, 2009 10:58 PM
Subject: [FlyRotary] Re: Fw: Belly Scoop

If I'm seeing pics correct, you have hard lines going from one component to another(oil lines). This is high risk. Makes the installation sensitive to fatigue failures, differential expansion, resonance. Take a look at your car, you'll find almost all hard lines terminated with flexible hose (like your rad lines).
 
Even if you have flexible hose, you need to plan on tying the lines every few inches to control vibration. The hardlines will become "S" shaped during flight.
 
If I'm seeing wrong, or you have already planned this stuff...........never mind.
 
-al wick
----- Original Message -----
From: Greg Ward
Sent: Wednesday, July 22, 2009 10:36 PM
Subject: [FlyRotary] Fw: Belly Scoop

 
 
Couple of more shots.
Greg Ward
Lancair 20B in progress
----- Original Message -----
Sent: Wednesday, July 22, 2009 8:48 PM
Subject: Belly Scoop

Hi Greg,

I am anxious to see what you get on the dyno with your engine!  It should be a screamer!  What is the opening size of the belly scoop and where did you get the scoop?  I am thinking of something similar with my FG.  How do you direct the air inside the scoop to go over both the oil and water exchangers?  How do you control the cowl flap?  You said manually??? How?

 

Bill B


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