Mailing List flyrotary@lancaironline.net Message #38511
From: George Lendich <lendich@optusnet.com.au>
Subject: Re: [FlyRotary] Re: End Housings
Date: Thu, 19 Jul 2007 07:44:22 +1000
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Lynn,
A quick question!
The side inlets in the cast end-housings, have a reducer ( reduction in inlet size) of approx 2mm ( all round) just after the opening. This reducer ( reduced area) carries through to the housing face where it changes to the face shape.
Does this reducer act as a choke of the inlet charge. I've had advice that it doesn't do anything but wonder why it's there?
George ( down under) 
Its just to account for production variations in the castings. There are no dowel pins to locate the intake manifold. Just the loose fit on the mounting studs.
 
So, there will never be a sharp corner sticking out into the flow from the manifold. An effective fix, but a poor solution power wise.
 
Lynn E. Hanover
 
Thanks Lynn,
As I assumed, it's not a reducer but the opening is made a little bigger, to accommodate poor fit.
Thanks Again!
George (down under)




Get a sneak peek of the all-new AOL.com.
Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster