Mailing List flyrotary@lancaironline.net Message #24206
From: Jerry Hey <jerryhey@earthlink.net>
Subject: Re: [FlyRotary] Re: Fuel Injector Position
Date: Mon, 20 Jun 2005 17:44:57 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Rusty, where were the butterflies located? Jerry
On Monday, June 20, 2005, at 03:58 PM, Russell Duffy wrote:

        If you always operate the throttle slowly, (like in an airplane) this is
not an issue.

Hi Bill,
 
Your description of the problem is right on, and that's exactly how it worked when I had my 30" long intake with all the injectors at the end.  The throttle response was horrid, as in dangerous. 
 
IF you never had to operate the throttle quickly in a plane, it wouldn't be a problem, but there are times when you need quick response.  One example would be on a botched landing (so I've heard <g>), where you get a good bounce.  Often it takes a significant shot of power to arrest the next bounce, and it needs to be NOW.  I only flew the long intake a few hours because it was just that bad, and any bounced landing would have ended up in damage to the plane. 
 
All that being said, it doesn't mean the injector has to be an inch from the engine either.  I've had intakes with the injectors about 12 inches away, and they worked fine. 
 
Cheers,
Rusty
       
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