X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-wi0-f180.google.com ([209.85.212.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.3) with ESMTPS id 5358412 for flyrotary@lancaironline.net; Fri, 20 Jan 2012 20:02:47 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.212.180; envelope-from=msteitle@gmail.com Received: by wibhm6 with SMTP id hm6so802215wib.25 for ; Fri, 20 Jan 2012 17:02:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=SiKVtYeE9uZv5KB8RB5Wl0Hq5vRX2u/ksC2KIuTFEAw=; b=RK33DN/L5D/B3hUKpdWoclNy1+vMjI7hZ4O7CaCfde0QVNOZaO3kAG91sCiqCFjm6o wsR8JcvQuqCsI5ERCWnBmA2DNkr6HRFBxCO8tmifkYmHXoGwuhT2Jvy0m1G6v+RffFWz kseWcLgNfb1k4HnGFN4qzqKGWMg0BIjCJ1+H0= MIME-Version: 1.0 Received: by 10.180.100.228 with SMTP id fb4mr178112wib.1.1327107732806; Fri, 20 Jan 2012 17:02:12 -0800 (PST) Received: by 10.223.105.211 with HTTP; Fri, 20 Jan 2012 17:02:12 -0800 (PST) In-Reply-To: References: Date: Fri, 20 Jan 2012 19:02:12 -0600 Message-ID: Subject: Re: [FlyRotary] Re: P-port breakthrough From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=f46d0418256efe1a6304b6ff58ee --f46d0418256efe1a6304b6ff58ee Content-Type: text/plain; charset=ISO-8859-1 Tracy, OK, what you said just registered in the grey matter. Any ideas on what to do if the MAP does't come up fast enough resulting in bogging? Calibrated air bleeds? Mark On Fri, Jan 20, 2012 at 6:46 PM, Mark Steitle wrote: > Tracy, > > Thanks, I'll check that, but remember... I've got three of those "suckers" > and they're working overtime. > > Mark > > On Fri, Jan 20, 2012 at 5:27 PM, Tracy wrote: > >> Sounds like it's working for you but if those check valves are "good" ie, >> don't leak, the MP won't go up fast enough at the EC2/3 port and the >> engine will probably bog down and die when you open the throttle >> (especially if done rapidly).. Check your throttle response to be sure >> the EC2/3 sees the true MP when you go to WFO. >> >> Tracy >> >> >> >> On Fri, Jan 20, 2012 at 6:04 PM, Mark Steitle wrote: >> >>> I made a major breakthrough today. In preparation for hooking up my new >>> Hytek data logger, I decided that it would be a good idea to install check >>> valves in the vacuum lines leading from each rotor housing. (For those who >>> are unaware, I am running a peripheral port 3-rotor with a slide throttle >>> TB.) My system measures MAP from the unused oil injection ports in each >>> rotor housing. Not sure what possessed me to do a ground run right then, >>> but I decided to do a ground run after installing the check valves. Now >>> keep in mind that typical MAP readings at idle up to this point was approx. >>> 17". This has been bugging me, but it didn't stop me from flying. Well, >>> today's MAP readings were in the 14.4" - 15.0" range. Then it dawned on me >>> that the way the vacuum lines were plumbed the EC-2 would see an average of >>> all three rotors. Since each rotor is 120* (crank degrees) apart in their >>> 4-stroke cycle, the MAP would be quite a bit different for each rotor. By >>> installing check valves in the vacuum lines, I have now isolated each rotor >>> from the other two and am measuring the lowest vacuum. Idle is now down to >>> a respectable 1500 rpm, but the mixture has gone way lean, so it appears >>> that a re-tune is in order. I'll probably re-set the EC-2 to the factory >>> defaults and start the process over from the very beginning. >>> >>> I would like to strongly suggest to anyone that is measuring MAP in the >>> rotor housings to install check valves in each of the lines. Your EC-2/3 >>> will thank you for it. >>> >>> Mark >>> >> >> > --f46d0418256efe1a6304b6ff58ee Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Tracy,=A0

OK, what you said just registered in the grey = matter. =A0Any ideas on what to do if the MAP does't come up fast enoug= h resulting in bogging? =A0Calibrated air bleeds?

= Mark

On Fri, Jan 20, 2012 at 6:46 PM, Mark Steitl= e <msteitle@gmai= l.com> wrote:
Tracy,=A0

Thanks,=A0I'll check that, but remember...= I've got three of those "suckers" and they're working ov= ertime.

Mark =A0

On Fri, Jan 20, 2012 at 5:27 PM, Tracy <rwstracy@gmail.com> wrote:
Sounds like it's working for you but if = those check valves are "good" ie, don't leak,=A0 the MP won&#= 39;t go up fast enough at the EC2/3 port and the engine will probably bog d= own and die when you open the throttle (especially if done rapidly)..=A0=A0= Check your throttle response to be sure the EC2/3 sees the true MP when yo= u go to WFO.

Tracy

=A0

= On Fri, Jan 20, 2012 at 6:04 PM, Mark Steitle <msteitle@gmail.com>= wrote:
I made a major breakthrough today. =A0In preparation for hooking up my= new Hytek data logger, I decided that it would be a good idea to install c= heck valves in the vacuum lines leading from each rotor housing. =A0(For th= ose who are unaware, I am running a peripheral port 3-rotor with a slide th= rottle TB.) =A0My system measures MAP from the unused oil injection ports i= n each rotor housing. =A0Not sure what possessed me to do a ground run righ= t then, but I decided to do a ground run after installing the check valves.= =A0Now keep in mind that typical MAP readings at idle up to this point was= approx. 17". =A0This has been bugging me, but it didn't stop me f= rom flying. =A0Well, today's MAP readings were in the 14.4" - 15.0= " range. =A0Then it dawned on me that the way the vacuum lines were pl= umbed the EC-2 would see an average of all three rotors. =A0Since each roto= r is 120* (crank degrees) apart in their 4-stroke cycle, the MAP would be q= uite a bit different for each rotor. =A0By installing check valves in the v= acuum lines, I have now isolated each rotor from the other two and am measu= ring the lowest vacuum. =A0Idle is now down to a respectable 1500 rpm, but = the mixture has gone way lean, so it appears that a re-tune is in order. = =A0I'll probably re-set the EC-2 to the factory defaults and start the = process over from the very beginning. =A0

I would like to strongly suggest to anyone that is meas= uring MAP in the rotor housings to install check valves in each of the line= s. =A0Your EC-2/3 will thank you for it. =A0

Mark



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