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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-4957312@logan.com>
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Subject: Re: [FlyRotary] Next step
Date: Tue, 26 Apr 2011 09:19:44 -0400
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Importance: Normal

I would not do a flow test - just to the injectors clicking away  confirms 
what you are really trying to confirm - that you have them hooked up 
correctly.

Tracy's EC2 requires two revs at 150 rpm (or so) on a rotary, so I would 
presume 250 rpm is more than adequate - any more and you could taxi just 
using your starter {:>)

So, I think you have run out of excus..... er, reasons not to fire it up. 
Let it rip - however, you might warn any neighbors who may have heart 
conditions.

Ed
--------------------------------------------------
From: "Ernest Christley" <echristley@nc.rr.com>
Sent: Monday, April 25, 2011 11:09 PM
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: [FlyRotary] Next step

> Last night I installed MegaTune on an old Pentium computer.  I had to use 
> an old one, because I need an honest to goodness serial port to talk to 
> the MegaSquirt ECU.  This afternoon, I hooked it up to the airplane and 
> started checking systems.  First, I calibrated the throttle position 
> sensor, then verified that the manifold pressure sensor responded by 
> blowing gently in the tube.
>
> The computer has a mode to check the injectors.  I have separate switches 
> for the primary and secondaries, and verified a nice clakety-clack from 
> each using a metal rod between my ear and each injector.  I haven't 
> verified that they all flow equally.  Finally, I verified the computer is 
> seeing the engine turn over while cranking.
>
> Two questions:
>
> 1) Is a flow test absolutely necessary, or is the sound verification of 
> them opening and closing enough to know they're at least working?
>
> 2) Is 250RPM enough spin to start a rotary?  I know Lynn has emphasized 
> that they start better the faster they can be spun.  Will 250 give an easy 
> start?
>
> I now have to bolt the panel back into place, put some gas in the tank, 
> and then set the fuel regulator pressure.  Bolt the cowl and prop on, call 
> in some fire extinguisher bearing friends.  Roll it out, kick a tire and 
> then (hopefully) light the fire.
>
> --
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