Received-SPF: none
 receiver=logan.com; client-ip=203.24.100.45; envelope-from=lendich@aanet.com.au
Message-ID: <21416C19AE844339B326D71EBE51A307@ownerf1fc517b8>
From: "George Lendich" <lendich@aanet.com.au>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-3691484@logan.com>
Subject: Re: [FlyRotary] Re: 295cc vs 495 cc was [FlyRotary] responses to responses, not developing full power
Date: Tue, 23 Jun 2009 09:22:44 +1000
MIME-Version: 1.0
Content-Type: text/plain;
	format=flowed;
	charset="iso-8859-1";
	reply-type=original
Content-Transfer-Encoding: 7bit

Bill,
I guess that's yellow primary at an average of 380cc/m and blue secondary 
502cc/m = 882cc/m = 441cc/m each injector.
Can you get 440cc/m injectors? (as Tracy suggests) if you can, you will have 
2 injectors the same, as Ed suggests. Might make things simpler to manage.

I guess you might be saying you have the yellow and blue injectors to hand, 
and wish to use what you have.
George (down under)

> Here is the plan I am considering.  Please feel free to comment.
> In light of the fact that the fuel pressure on the Renesis should be 57 
> lbs
> in order to get the spec flow from the injectors.
> I will replace the red injectors with the yellow injectors.  Looking at 
> the
> flow range shown in the manual, this will give a total flow of between
> 1656CCM and 1872CCM at the spec pressure of 57 psi.  At 100% duty cycle,
> that should support HP of 287-324.
> If I reduce the fuel pressure from 57 psi to 43 psi, that will reduce the
> range of the fuel flow to 1438ccm to 1626ccm.  At a duty cycle of 85% that
> will support a HP of 212-240.
> Pro's:
> Plenty of fuel at a fuel pressure that allows a higher GPM and lower amp
> draw.  (should easily provide full power on battery voltage only and will
> increase the no alternator range)
> Will allow the EC-2 secondary injector differential in Mode 6 to be
> cancelled.  (this is only required? When the injectors are more than 50%
> different.  They will be between 15% and 32% different depending on the
> range given)  Should be able to lower the MAP table here to compensate?
> Con's:
> Do you have any yellow injectors?
>
> I considered going to only yellow injectors.  This will flow the same fuel
> as the stock setup, but only at the 57 psi.  The only advantage here is
> cancelling the injector differential.
>
> What say ye?  Tracy are you gone to Co yet?
>
> Bill B
>
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub: 
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>