Mailing List flyrotary@lancaironline.net Message #57756
From: Steven W. Boese <SBoese@uwyo.edu>
Subject: RE: [FlyRotary] Re: OMP
Date: Tue, 10 Apr 2012 14:38:23 +0000
To: Rotary motors in aircraft <flyrotary@lancaironline.net>

John,

 

Plumbing-wise, that would work.  The possible problem is whether the flow rate of oil would be sufficient.  With a normal linkage between the throttle body and OMP, each of the three rotors would be receiving about half the amount of oil that was supplied to each rotor in the two rotor engine.  Changing the linkage between the throttle body and the OMP could compensate for this for low power settings, but the oil flow rate at half to full throttle would still be limited to much less than stock.

 

Steve


From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of downing.j@sbcglobal.net [downing.j@sbcglobal.net]
Sent: Tuesday, April 10, 2012 6:59 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: OMP

Steve, why not run one port to each rotor and return the 4th to the reservoir tank.  JohnD
----- Original Message -----
Sent: Monday, April 09, 2012 9:49 PM
Subject: [FlyRotary] OMP

Mark and all,

 

The information that I previously gave on the '86 OMP delivery is in error.  After further analysis of the disassembled OMP, I realized that the delivery rate for the front two ports depends on the DIFFERENCE between the diameters of the two sections of the pump piston.  The result is that all four of the ports deliver the same flow rate.  This would make the application of this OMP to a three rotor engine more difficult, in my opinion.  Of course I could be wrong about that, too.

 

I apologize for the mistake.

 

Steve

Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster