X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-yx0-f180.google.com ([209.85.213.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTPS id 5063943 for flyrotary@lancaironline.net; Tue, 26 Jul 2011 12:23:28 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.213.180; envelope-from=rwstracy@gmail.com Received: by yxk30 with SMTP id 30so708633yxk.25 for ; Tue, 26 Jul 2011 09:22:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=subject:references:from:content-type:x-mailer:in-reply-to :message-id:date:to:content-transfer-encoding:mime-version; bh=m7n50uqYSr6TkpwqlmSHpmkr5GEhPFpE1XKcBuI2GiM=; b=QBUpTJCMRVvucNIYkQ5oPZgb1rdSqfQMTGoxhHvCPoKSkBnoL+uwZq1gMAk74MVFx6 Slkm5+r/uuugbu2ZAVGvRZFbCbpMn2vtJXLSTCZs9RCUWjUJOzjGFFmQQOo41ZszDuy+ BPGtkTm2+wlippMtxcIkGUm5M1zoEek0I0Hz0= Received: by 10.236.78.233 with SMTP id g69mr8243580yhe.298.1311696767503; Tue, 26 Jul 2011 09:12:47 -0700 (PDT) Return-Path: Received: from [10.0.1.3] (99-197-145-127.cust.wildblue.net [99.197.145.127]) by mx.google.com with ESMTPS id f4sm445901yhn.27.2011.07.26.09.12.39 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 26 Jul 2011 09:12:46 -0700 (PDT) Subject: Re: [FlyRotary] Re: Quiet References: From: Tracy Content-Type: multipart/alternative; boundary=Apple-Mail-43-529596986 X-Mailer: iPad Mail (8F191) In-Reply-To: Message-Id: <0D8FD64F-C0D6-4835-8BF6-17A276BFAFF9@gmail.com> Date: Tue, 26 Jul 2011 12:12:26 -0400 To: Rotary motors in aircraft Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (iPad Mail 8F191) --Apple-Mail-43-529596986 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Couple of questions on the overhaul Jeff. =20 As you may recall from Chris Barber's experience, if the springs were fried= , the apex seals were probably fried as well. Did you check for a sag in th= e middle of the apex seal on the fried spring side? =20 You probably handled this but for builders that don't know, Did you change both counterweights when you changed the rotors from series 4= to series 5? =20 Tracy Sent from my iPad On Jul 26, 2011, at 10:58 AM, Jeff Whaley wrote: > Yes, it has been a bit quiet and I too have been silent for a while. >=20 > Just recently went through a rebuild of my 13B due to low compression =E2=80= =A6 prior to that you may remember that a tension bolt broke and was extract= ed/replaced. >=20 > During disassembly of my engine I found one set of APEX springs flattened,= another broken tension bolt and one corner seal broken at the narrow point.= >=20 > =20 >=20 > Engine was overhauled with new o-rings from RWS; original APEX seals reins= talled =E2=80=93 but all APEX spring sets were replaced with OEM Mazda parts= . >=20 > I bought and installed a set of solid corner seals from ATKINS. >=20 > All the tension bolts were upgraded to the S5 series heavier style. >=20 > The =E2=80=9988-S4-9.4:1 compression rotors were replaced with a pair of =E2= =80=9991-S5-9.7:1 rotors. >=20 > The oil-out port was moved from the front cover to the front housing, afte= r drilling through to the oil gallery and tapping for a connector =E2=80=93 t= his removes two 90 degree turns. >=20 > The PSRU oil-return port was moved from the front cover to the bottom of t= he rear rotor housing, after drilling through and adding a connector. >=20 > =20 >=20 > To date only 2 hours on the rebuilt engine =E2=80=A6 it is making a bit mo= re power =E2=80=93 indicated by a richer mixture requirement for best power.= >=20 > =20 >=20 > Jeff Whaley >=20 >=20 > =20 >=20 >=20 > This message, and the documents attached hereto, is intended only for the a= ddressee and may contain privileged or confidential information. Any unautho= rized disclosure is strictly prohibited. If you have received this message i= n error, please notify us immediately so that we may correct our internal re= cords. Please then delete the original message. Thank you. --Apple-Mail-43-529596986 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
Couple of questions on the overhaul Jef= f.  

As you may recall from Chris Barber's exp= erience,  if the springs were fried, the apex seals were probably fried= as well.  Did you check for a sag in the middle of the apex seal on th= e fried spring side?  

You probably handled th= is but for builders that don't know,
Did you change both counterwe= ights when you changed the rotors from series 4 to series 5?  

Tracy

Sent from my iPad

On Jul 26, 201= 1, at 10:58 AM, Jeff Whaley <jwha= ley@datacast.com> wrote:

Yes, it has been a bit quiet and I too have been sile= nt for a while.

Just recently went through a rebuild of my 13B due to= low compression =E2=80=A6 prior to that you may remember that a tension bol= t broke and was extracted/replaced.

During disassembly of my engine I found one set of AP= EX springs flattened, another broken tension bolt and one corner seal broken= at the narrow point.

 

Engine was overhauled with new o-rings from RWS; orig= inal APEX seals reinstalled =E2=80=93 but all APEX spring sets were replaced= with OEM Mazda parts.

I bought and installed a set of solid corner seals fr= om ATKINS.

All the tension bolts were upgraded to the S5 series h= eavier style.

The =E2=80=9988-S4-9.4:1 compression rotors were repl= aced with a pair of =E2=80=9991-S5-9.7:1 rotors.

The oil-out port was moved from the front cover to th= e front housing, after drilling through to the oil gallery and tapping for a= connector =E2=80=93 this removes two 90 degree turns.

The PSRU oil-return port was moved from the front cov= er to the bottom of the rear rotor housing, after drilling through and addin= g a connector.

 

To date only 2 hours on the rebuilt engine =E2=80=A6 i= t is making a bit more power =E2=80=93 indicated by a richer mixture require= ment for best power.

 

Jeff Whaley

 


This message, and the docume= nts attached hereto, is intended only for the addressee and may contain priv= ileged or confidential information. Any unauthorized disclosure is strictly p= rohibited. If you have received this message in error, please notify us immediately so that we may correct our i= nternal records. Please then delete the original message. Thank you.
= --Apple-Mail-43-529596986--