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Date: Mon, 03 Apr 2006 12:41:23 -0400
From: Ernest Christley <echristley@nc.rr.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Erratic mixture
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Russell Duffy wrote:

> Staged injectors help this considerably, and I believe Tracy has the 
> ability now to use different size primary and secondary injectors.  
> You might could use a smaller primary, and a large secondary if you 
> got desperate.   BTW, the FD does in fact use 550 primaries, and 850 
> secondaries.  Anyone know what the Renesis uses?     
>
There's an issue I haven't spent much time considering.  I have four of 
the Ford 42lb injectors and a set of four used Mazda injectors (that I 
wouldn't trust past a test stand).  I believe the stock injectors are 
larger than 42lb (?).  I can run large stock injectors in the engine 
block holes, and smaller injectors just behind the throttle body on the 
opposite end of the intake manifold. 
-Then I can use the stock injector manifold for the two large injectors.
-The intake charge will be denser from evaporative cooling which should 
translate to an incremental increase in power (?)
-BSFC will see a slight increase from more complete mixing (?)

-- 
         ,|"|"|,               Ernest Christley     |
----===<{{(oQo)}}>===----     Dyke Delta Builder    |
        o|  d  |o          www.ernest.isa-geek.org  |