Mailing List flyrotary@lancaironline.net Message #13981
From: Ken Welter <rotary.coot@verizon.net>
Subject: Re: [FlyRotary] Ellison vs EFI
Date: Thu, 16 Dec 2004 09:11:40 -0800
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Re: [FlyRotary] Ellison vs EFI
  I talked to then many years ago as I was thinking about one but the only one they offered had a 1.5 inch bore and that just ain't going to flow enough air for the rotary so you would need two of them at double the cost.
  Ken Welter




Greetings,
 
As I ponder what I might do differently "next time", I have to wonder if I might not consider an Ellison throttle body rather than EFI.  I had one of these on my RV-8, and it worked beautifully.  It's simple, reliable, had great throttle response, and good mixture control.  It also only requires 5-6 psi of fuel pressure, and no return line (usually).  The downside is the cost, which is about $1650 for the EFS-4-5. 
 
I don't personally care for traditional carbs, and the Ellison is certainly not a traditional carb.  As well as it atomizes fuel, and as controllable as the mixture is, I can't see why it wouldn't produce as much power as the EFI system. 
 
Has anyone tried one of these on a rotary?  Any thoughts on the subject?
 
Cheers,
Rusty (getting nervous about high pressure fluids that burn)
 

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