X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-ey0-f180.google.com ([209.85.215.180] verified) by logan.com (CommuniGate Pro SMTP 5.4c2a) with ESMTPS id 4827064 for flyrotary@lancaironline.net; Wed, 26 Jan 2011 10:06:54 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.215.180; envelope-from=msteitle@gmail.com Received: by eyf18 with SMTP id 18so538648eyf.25 for ; Wed, 26 Jan 2011 07:06:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type; bh=EHJf1ziyMP/B06NlZFc3RKayH5iPkDssFZee2hy7WTc=; b=xF9n5AA23aUVSVSqs+D7tzuapvHdeUVPaL0sbhzHSzxEiqFAcJ1kEx0avDcNuAK+Js 1Kkq8eYvXyBfRby8vr7bZL3X2xu9BY2YQokZRD+sDJRLZMYjladQD0lJyR5UOokXfpVE 8dvaZLtJsY+X8SBr2O3mALM5KnCD+MlM4T4I8= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=O3HY6JebJW7W1YMXMTzwmIW3a+vCH4YVMbFPE5DYw8VaGcBRpSvZdVKa3Hkrzad0bG FZ8fWZfgpfQviqv8TPZO/v/k1ngh0JweJ/xC7wiihdJyCNQMABnZT2I1k5y33myR2H/I vRPKxklqIVQL7JaNkIQ8PfLJaQivFLmKMuBWE= MIME-Version: 1.0 Received: by 10.213.28.14 with SMTP id k14mr1388737ebc.24.1296054377284; Wed, 26 Jan 2011 07:06:17 -0800 (PST) Received: by 10.213.28.142 with HTTP; Wed, 26 Jan 2011 07:06:17 -0800 (PST) In-Reply-To: References: Date: Wed, 26 Jan 2011 09:06:17 -0600 Message-ID: Subject: Re: [FlyRotary] Most stupid question here ever...rotor position From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0015174c441ec48324049ac12c0d --0015174c441ec48324049ac12c0d Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Chris, The rear rotor will only fit one way as dictated by the eccentric shaft, stationary gear and rotor housing. So, don't disassemble the motor again..= . unless you just need something to do with your spare time. Mark On Wed, Jan 26, 2011 at 8:50 AM, Chris Barber wr= ote: > This may be the most stupid question posed on this site. > > > > Ok, first the update on my loss of compression in my rear rotor housing. = I > tore open the engine and everything looked really good, except, as expect= ed, > the springs for the apex seals had been flattened. Upon reflection, I > also remember removing the rear spark plug a while back and recall I > replaced it due to the plug removed looked damaged. At the time, since > the engine seemed to be running ok (event though difficult to start), I > didn=92t think too much of it. However, now I realize that it was a clea= r > indication of detonation. > > > > Seems like a no brainer now, but sometimes I gotta be hit across the skul= l > with the obvious. Flame suite on but in the tradition of John Slade, I d= o > wish to post my failures to help others learn and to hopefully finally ge= t > it. > > > > Anyway, I got everything buttoned up and got it to start last night. I > reset all the EC2 parameters to the factory defaults. It did not run well= . > I could not even get it to start on the A computer, and it started after = a > lot of extended cranking on the B computer. It did not run great on B. = My > suspicion is that the timing is off. The B computer was tuned a long tim= e > ago and has not been updated. I plan to do a static timing check this > evening if I can get out to the hangar. I have gotten that process down > pretty good now. I think I may be off a tooth on the crank angle sensor. > I think a combination of a lean mixture and bad timing may be the > predominant factors in my detonation problem. I had a friend point out > the obvious in that the pinging I may have thought I would hear would not= be > too likely with the noise of the prop. DOH! > > > > I did do the EC2 check and the injectors are clicking dutifully and I saw > strong spark on all plugs. > > > > Ok, here is the stupid question and a major bonehead moment. I remember > that you must =93 clock =93 the rear rotor to the front rotor when instal= ling > them. However, when I installed the rear rotor the other day I placed it > where I though it needed to go base on when I removed it, however, I can= =92t > remember now if I actually got it back in the right position in relation = to > the front rotor. I was thinking it is only gonna fit one way based on th= e > position of the e-shaft to the chamber walls. Is this so, or could I hav= e > it out of position? I am having visions of me getting it to start with > the rear rotor out of position, thus only running on the front rotor whil= e > banging the hell out of the rear rotor. Would it even start if this wer= e > so? > > > > If I gotta tear it down to check, I will and as mentioned, cracking open > is not all that big a deal anymore. Other than this obvious brain fart, = I > am understanding the process much better=85.rote practice does this. > > > > Thanks guys/gals. > > > > Chris Barberfly > --0015174c441ec48324049ac12c0d Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable
Chris,
=A0
The rear rotor will only fit one way as dictated by the eccentric shaf= t, stationary gear and rotor housing.=A0 So,=A0don't disassemble the mo= tor again... unless you just need something to do with your spare time.
=A0
Mark

On Wed, Jan 26, 2011 at 8:50 AM, Chris Barber <cbarber@te= xasattorney.net> wrote:

This may be the most stupid question posed on thi= s site.=A0

=A0

Ok, first the update on my loss of compression in my re= ar rotor housing.=A0 I tore open the engine and everything loo= ked really good, except, as expected, the springs for the apex seals had be= en flattened.=A0 Upon reflection, I also remember removing the= rear spark plug a while back and recall I replaced it due to the plug remo= ved looked damaged.=A0 At the time, since the engine seemed to= be running ok (event though difficult to start), I didn=92t think too much= of it.=A0 However, now I realize that it was a clear indicati= on of detonation.

=A0

Seems like a no brainer now, but sometimes I=A0gotta= be hit across the skull with the obvious.=A0 Flame suite = on but in the tradition of John Slade, I do wish to post my failures to hel= p others learn and to hopefully finally get it.

=A0

Anyway, I got everything buttoned up and got it to star= t last night.=A0 I reset all the=A0EC2 parameters to th= e factory defaults. It did not run well.=A0 I could not even g= et it to start on the A computer, and it started after a lot of extended cr= anking on the B computer.=A0 It did not run great on B.= =A0 My suspicion is that the timing is off.=A0 The B co= mputer was tuned a long time ago and has not been updated.=A0 = I plan to do a static timing check this evening if I can get out to the han= gar.=A0 I have gotten that process down pretty good now.= =A0 I think I may be off a tooth on the crank angle sensor.=A0= I think a combination of a lean mixture and bad timing may be the p= redominant factors in my detonation problem.=A0 I had a friend= point out the obvious in that the pinging I may have thought I would hear = would not be too likely with the noise of the prop.=A0 DOH<= /a>!

=A0

I did do the=A0EC2 check and the injectors are c= licking dutifully and I saw strong spark on all plugs.

=A0

Ok, here is the stupid question and a major bonehead mo= ment.=A0 I remember that you must =93 clock =93 the rear rotor= to the front rotor when installing them.=A0 However, when I i= nstalled the rear rotor the other day I placed it where I though it needed = to go base on when I removed it, however, I can=92t remember now if I actua= lly got it back in the right position in relation to the front rotor.= =A0 I was thinking it is only=A0gonna fit one way based on th= e position of the e-shaft to the chamber walls.=A0 Is this so,= or could I have it out of position?=A0 I am having visions of= me getting it to start with the rear rotor out of position, thus only runn= ing on the front rotor while banging the hell out of the rear rotor. = =A0=A0Would it even start if this were so?

=A0

If I=A0gotta tear it down to check, I will and a= s mentioned, cracking open is not all that big a deal anymore.=A0 Other than this obvious brain fart, I am understanding the process much= better=85.rote practice does this.

=A0

Thanks guys/gals.

=A0

Chris Barberfly


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