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Date: Fri, 01 Oct 2010 15:10:04 -0500
From: Charlie England <ceengland@bellsouth.net>
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To: flyrotary <flyrotary@lancaironline.net>
Subject: My favorite takeaway from the KY flyin: potential efficiency improvement
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  The thing that made the biggest impression on me wasn't the 
(excellent) SAG research, but a little tidbit shared by Doug during his 
dyno presentation. It, like the SAG question, didn't have a final 
answer, but I suspect that it has the potential for improved cruise 
efficiency.

Doug mentioned that they saw the repeatable effect of increased power 
when they disabled *either* the leading or trailing injectors. I have my 
own idea about why they saw that, but I'm hopeful that there will be 
some discussion & eventually, a proven way to increase cruise efficiency.

Questions for Doug & Steve:
When this was tested, did measured fuel flow change when the injector 
pair was disabled & rpm went up?
Did you by any chance try to duplicate the effect while in cruise flight 
by flying on 1 pair of injectors?

As I mentioned to Steve in a hurried conversation Sunday morning, I have 
a suspicion of why it's happening but I'd like to see more research. If 
the effect turns out to be consistent across multiple installations, 
there could be an easy efficiency improvement on the table, waiting to 
be picked up & used.

Charlie

Steve, Doug,

I'd love a copy of your test file, & to talk more about it, if possible. 
You can give me a call any afternoon, or email me your # & I'll call you 
on my dime.

Thanks...601-879-9596