X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-m25.mx.aol.com ([64.12.137.6] verified) by logan.com (CommuniGate Pro SMTP 5.2.0) with ESMTP id 2718297 for flyrotary@lancaironline.net; Wed, 06 Feb 2008 17:11:26 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.6; envelope-from=WRJJRS@aol.com Received: from WRJJRS@aol.com by imo-m25.mx.aol.com (mail_out_v38_r9.3.) id q.d16.211011ef (37529) for ; Wed, 6 Feb 2008 17:10:42 -0500 (EST) Received: from webmail-nb14 (webmail-nb14.sim.aol.com [207.200.69.206]) by cia-mb01.mx.aol.com (v121.4) with ESMTP id MAILCIAMB012-929947aa30618c; Wed, 06 Feb 2008 17:10:42 -0500 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: Flex plate for 20B? Date: Wed, 06 Feb 2008 17:10:41 -0500 X-AOL-IP: 65.161.241.3 In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: wrjjrs@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8CA37243F5233D6_854_2412_webmail-nb14.sysops.aol.com" X-Mailer: AOL Webmail 34032-STANDARD Received: from 65.161.241.3 by webmail-nb14.sysops.aol.com (207.200.69.206) with HTTP (WebMailUI); Wed, 06 Feb 2008 17:10:41 -0500 Message-Id: <8CA37243F5233D6-854-1234@webmail-nb14.sysops.aol.com> X-Spam-Flag: NO ----------MB_8CA37243F5233D6_854_2412_webmail-nb14.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Tracy and Phil The 20B counterweight would be (and is) different than the 13B. The balance=20= is for 3 lobes at 120=C2=B0. There is a balance chart in the "Rotary Engine"= book. The balance is different for every configuration 1, 2, 3, and 4 rotor= . Bill Jepson -----Original Message----- From: Tracy Crook To: Rotary motors in aircraft Sent: Wed, 6 Feb 2008 1:58 pm Subject: [FlyRotary] Re: Flex plate for 20B? There was no=C2=A0 manual transmission 20B as far as I know.=C2=A0 Someone m= ay have done a custom build=C2=A0for one though.=C2=A0 The 20B auto counterw= eight is unlike any of the 13B counterweights. =C2=A0 9.0 for CR on the 20B. (stock that is) =C2=A0 All engines need the 86 - 91 RX-7 auto flexplate for use with the RD-1x gear= drives. =C2=A0 Tracy On Feb 6, 2008 4:50 PM, Phil White wrote: OK...which flex plate should I look for to fit a 20B that came with manual trans flywheel and counterweight. =C2=A0Having been twin-turbo'd in its original life, I understand it would have 9.4:1 rotors (right?). Does a 3 rotor use the same flex plate and counterweight as a 2 rotor? Or would the counterweight have to be different?? Phil White - RV-10 (assembling engine now, airframe done) > > Subject: > Flex plate > From: > "Joe Berki" > Date: > Tue, 5 Feb 2008 18:03:43 -0500 > > > Will a flex plate and counterweight from a 3rd gen 13b fit a 2nd gen > 13b? =C2=A0How much for a flex plate and counterweight? =C2=A0Thanks for a= ny help. > > Joe berki -Limo EZ > > ------------------------------------------------------------------------ > > Subject: > Re: [FlyRotary] Flex plate > From: > "Kelly Troyer" > Date: > Wed, 06 Feb 2008 01:01:46 +0000 > > > Joe, > =C2=A0 =C2=A0A 3rd gen counterweight and flex plate will fit 2nd gen 13B b= ut the > counterweight > will put the 2nd gen out of balance unless rotors and both > counterweights =C2=A0from the > 3rd gen are installed also...........On another note if this engine is > for an A/C using > Tracy's redrive you must use a 2nd gen flexplate........FWIW > -- > Kelly Troyer -- Homepage: =C2=A0http://www.flyrotary.com/ Archive and UnSub: =C2=A0 http://mail.lancaironline.net:81/lists/flyrotary/L= ist.html ________________________________________________________________________ More new features than ever. Check out the new AOL Mail ! - http://webmail.= aol.com ----------MB_8CA37243F5233D6_854_2412_webmail-nb14.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8" Tracy and Phil
The 20B counterweight would be (and is) different than the 13B. The balance=20= is for 3 lobes at 120=C2=B0. There is a balance chart in the "Rotary Engine"= book. The balance is different for every configuration 1, 2, 3, and 4 rotor= .
Bill Jepson


-----Original Message-----
From: Tracy Crook <tracy@rotaryaviation.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Wed, 6 Feb 2008 1:58 pm
Subject: [FlyRotary] Re: Flex plate for 20B?

There was no  manual transmission 20B as far as I know.  Some= one may have done a custom build for one though.  The 20B auto cou= nterweight is unlike any of the 13B counterweights.
 
9.0 for CR on the 20B. (stock that is)
 
All engines need the 86 - 91 RX-7 auto flexplate for use with the RD-1x= geardrives.
 
Tracy

On Feb 6, 2008 4:50 PM, Phil White <philwhite9@aol.com> wrote:
OK...which flex plate should I look=20= for to fit a 20B that came with
manual trans flywheel and counterweight.  Having been twin-turbo'd in its original life, I understand it would have 9.4:1 rotors (right?).
Does a 3 rotor use the same flex plate and counterweight as a 2 rotor?
Or would the counterweight have to be different??

Phil White - RV-10 (assembling engine now, airframe done)
>
> Subject:
> Flex plate
> From:
> "Joe Berki" <jskmberki@allte= l.net>
> Date:
> Tue, 5 Feb 2008 18:03:43 -0500
>
>
> Will a flex plate and counterweight from a 3rd gen 13b fit a 2nd gen > 13b?  How much for a flex plate and counterweight?  Thanks fo= r any help.
>
> Joe berki -Limo EZ
>
> -----------------------------------------------------------------------= -
>
> Subject:
> Re: [FlyRotary] Flex plate
> From:
> "Kelly Troyer" <keltro@att.net= >
> Date:
> Wed, 06 Feb 2008 01:01:46 +0000
>
>
> Joe,
>    A 3rd gen counterweight and flex plate will fit 2nd gen 13= B but the
> counterweight
> will put the 2nd gen out of balance unless rotors and both
> counterweights  from the
> 3rd gen are installed also...........On another note if this engine is<= br> > for an A/C using
> Tracy's redrive you must use a 2nd gen flexplate........FWIW
> --
> Kelly Troyer


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