X-Virus-Scanned: clean according to Sophos on Logan.com X-PolluStop-Diagnostic: (direct reply)\eX-PolluStop-Score: 0.00\eX-PolluStop: Scanned with Niversoft PolluStop 2.1 RC1, http://www.niversoft.com/pollustop Return-Path: Received: from access.aic-fl.com ([204.49.76.2] verified) by logan.com (CommuniGate Pro SMTP 4.3c4) with ESMTP id 868339 for flyrotary@lancaironline.net; Wed, 13 Apr 2005 23:49:16 -0400 Received-SPF: none receiver=logan.com; client-ip=204.49.76.2; envelope-from=unicorn@gdsys.net Received: from b9k4u9 (unverified [204.49.76.49]) by access.aic-fl.com (Rockliffe SMTPRA 4.5.6) with SMTP id for ; Wed, 13 Apr 2005 22:43:01 -0500 Message-ID: <001101c540b5$240c47d0$314c31cc@b9k4u9> From: "Richard Sohn" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Fw: Rx-8 Rotors useable in 91 13B? Date: Wed, 13 Apr 2005 22:45:11 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000C_01C5407A.7342C2B0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_000C_01C5407A.7342C2B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Kelly, absolutely! Richard Sohn N-2071U ----- Original Message -----=20 From: Kelly Troyer=20 To: Rotary motors in aircraft=20 Sent: Wednesday, April 13, 2005 6:41 PM Subject: [FlyRotary] Re: Fw: Rx-8 Rotors useable in 91 13B? Richard, But we would include the side seals and springs ,end = seals,springs (and plugs ), and oil seal rings and respective O-rings ? Is that asumption correct = ? -- Kelly Troyer=20 Dyke Delta/13B/RD1C/EC2=20 -------------- Original message from "richard sohn" = : --------------=20 George,=20 I got the information from my engineering education, and also Leon = confirmed it in one of his recent postings on the subject.=20 One more thing, the difference between the two rotors balancing each = other and needing balance weights anyway, is static balancing vs. = dynamic balancing. Richard Sohn N-2071U=20 ----- Original Message -----=20 From: George Lendich=20 To: Rotary motors in aircraft=20 Sent: Wednesday, April 13, 2005 5:02 PM Subject: [FlyRotary] Re: Fw: Rx-8 Rotors useable in 91 13B? Richard, This goes against my advice as all components in movement affect = the rotating mass. It would be like not allowing for rings in a piston in the balance = equation. However I will check on that aspect. Where did you obtain that = information George ( down under) From: George Lendich=20 To: Rotary motors in aircraft=20 Sent: Wednesday, April 13, 2005 12:02 AM Subject: [FlyRotary] Re: Fw: Rx-8 Rotors useable in 91 13B? Bill,=20 If you find out before I do will you let me know about the = additional depth to be cut. On the balancing; I have to cover all that with my one rotor ( = no biggie), I can give you all that stuff a little down the track it = will only require lightening the counter balance weights a little. The e-shaft is the same, the rotors lighter =3D lighter = balance weights. There may be some oil volume difference (read weight) , but I = should have that soon, as well the rotor weight. BTW Tracy's apex seals = are 33 grams ( per rotor) - got them to-day. Has anyone got a set of new Mazda apex seals handy to weigh - = I guess there wouldn't be much in it anyway - just curious! George ( down under)=20 I am going to look into this a bit more and find out how = much to mill a rotor. A lighter rotor =3D> more rpms without increasing = stress? Ed Don't forget lighter rotors would require different = balance weights. I have heard from various sources that the Renesis = rotor was lighter and then that they weigh the same! Both from usually = reliable sources, go figure. Bill Jepson George, the apex seals do not go into the balance equation because = they are not attached to the rotor.=20 Just my 2c. Richard Sohn N-2071U ------=_NextPart_000_000C_01C5407A.7342C2B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Kelly,
absolutely!
 
Richard Sohn
N-2071U
 
 
----- Original Message -----
From:=20 Kelly = Troyer
Sent: Wednesday, April 13, 2005 = 6:41=20 PM
Subject: [FlyRotary] Re: Fw: = Rx-8 Rotors=20 useable in 91 13B?

Richard,
     But we would include the side seals and = springs=20 ,end seals,springs (and plugs ),
and oil seal rings and respective O-rings ? Is that asumption = correct=20 ?
--
Kelly Troyer
Dyke=20 Delta/13B/RD1C/EC2




--------------=20 Original message from "richard sohn" <unicorn@gdsys.net>: = --------------=20

George,
I got the information from my engineering education, and also = Leon=20 confirmed it in one of his recent postings on the subject.
One more thing, the difference between the two rotors balancing = each=20 other and needing balance weights anyway, is static balancing vs. = dynamic=20 balancing.
 
Richard Sohn
N-2071U
----- Original Message ----- =
From:=20 George Lendich
To: Rotary motors in = aircraft=20
Sent: Wednesday, April 13, = 2005 5:02=20 PM
Subject: [FlyRotary] Re: = Fw: Rx-8=20 Rotors useable in 91 13B?

Richard,
This goes against my advice as all components in movement = affect the=20 rotating mass.
It would be like not allowing for rings in a piston in the = balance=20 equation.
However I will check on that aspect. Where did you obtain = that=20 information
George ( down under)
From:=20 George Lendich =
To: Rotary motors in=20 aircraft
Sent: Wednesday, April = 13, 2005=20 12:02 AM
Subject: [FlyRotary] = Re: Fw: Rx-8=20 Rotors useable in 91 13B?

Bill,
If you find out before I do will you let me know about = the=20 additional depth to be cut.
On the balancing; I have to cover all that with my one = rotor ( no=20 biggie), I can give you all that stuff a little down the track = it will=20 only require lightening the counter balance weights a=20 little.
 
The e-shaft is the same, the rotors lighter =3D lighter = balance=20 weights.
There may be some oil volume difference (read = weight) , but=20 I should have that soon, as well the rotor weight. BTW Tracy's = apex=20 seals are 33 grams ( per rotor) - got them to-day.
 
Has anyone got a set of new Mazda apex seals handy to = weigh - I=20 guess there wouldn't be much in it anyway - just = curious!
 
George ( down under) 
I am going to look=20 into this a bit more and find out how much to mill a = rotor.  A=20 lighter rotor =3D> more rpms without increasing=20 stress?
 
Ed Don't forget lighter rotors would require different = balance=20 weights. I have heard from various sources that the Renesis = rotor=20 was lighter and then that they weigh the same! Both from = usually=20 reliable sources, go figure.
Bill Jepson
 
George,
the apex seals do not go into the balance equation = because they=20 are not attached to the rotor.
Just my 2c.
 
Richard Sohn
N-2071U
 
=
 
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