Mailing List flyrotary@lancaironline.net Message #7993
From: sqpilot@earthlink <sqpilot@earthlink.net>
Subject: Re: [FlyRotary] injector relocation predictions?
Date: Mon, 10 May 2004 20:47:33 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Message
 
----- Original Message -----
Sent: Monday, May 10, 2004 8:33 PM
Subject: [FlyRotary] injector relocation predictions?

Greetings,
 
As I mentioned before, one of the relatively easy options for improvement will be to move the 4 injectors, and keep the current intake.  As they are now, all 4 injectors are in the TB, which is 30 inches away on the cold side of the engine.  I believe I can mount the two stock primaries back in the block, and can probably mount the two secondaries in the intake, maybe 2 inches from the engine.  
 
Here's the question, do you think this will increase power?  In other words, am I losing power by having the injectors coating the inside of the long tubing, rather than efficiently delivering the fuel to the engine?  
 
That is what Mistral Engines are now doing with their engine. (I just sent you some pictures of their setup), as well as an explanation of why they did it this way. Unfortunately, the moderator bounced the message back from the Fly Rotary group stating that the message was too long, so I sent it to you directly.
 
Thanks,
Rusty (thinking of draining one fuel tank, and filling it with helium to improve climb)   
 
Don't forget to re-do your weight and balance with the helium on board.
Paul Conner
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