X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail10.syd.optusnet.com.au ([211.29.132.191] verified) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTPS id 1008157 for flyrotary@lancaironline.net; Mon, 20 Jun 2005 18:08:43 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.191; envelope-from=lendich@optusnet.com.au Received: from george (d211-31-104-109.dsl.nsw.optusnet.com.au [211.31.104.109]) by mail10.syd.optusnet.com.au (8.12.11/8.12.11) with SMTP id j5KM7mXr001604 for ; Tue, 21 Jun 2005 08:07:54 +1000 Message-ID: <003501c575e4$82e6e350$6d681fd3@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Weights Date: Tue, 21 Jun 2005 08:07:55 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0032_01C57638.546B2000" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_0032_01C57638.546B2000 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Richard, Thanks I was aware of that from your last advice - I included that = information for general knowledge. I might add, that weight is for a one rotor or 10 grams each apex. George ( down under) The apex seals are not included in the balancing because the rotor is = not holding their centrifugal force, the rotor housing is. The same = applies to the springs. Richard Sohn N-2071U ----- Original Message -----=20 From: rijakits=20 To: Rotary motors in aircraft=20 Sent: Monday, June 20, 2005 11:04 AM Subject: [FlyRotary] Re: Weights Quich question to balancing: Though your list is not specifically pointed to balancing. For a dynamic balance job DO YOU or DO YOU NOT include the weight = of the apex-seals? Apparently they should not bear on the rotor/excenter of the shaft, = as the rotorhousing carries their weight at all times. Am I missing something? Leon? Thomas J. ----- Original Message -----=20 From: George Lendich=20 To: Rotary motors in aircraft=20 Sent: Monday, June 20, 2005 6:18 AM Subject: [FlyRotary] Weights Rusty, Here's some very accurate weights for your records- Apex corner seals x6 =3D 19grams Apex corner seal springs x 6 =3D 1 gram Side seal springs x6 =3D1 gram Side seals x6 =3D 25grams Oil seal springs x4 =3D 10 grams Oil seal retainers( metal) x4 =3D 92 grams Oil 'O' rings x4 =3D 16 grams Total of 164 grams ( 5.784936 oz) Weighed all together 164 grams ( as a check for accuracy) RX8 Rotor 9.3346lbs( 4243 grams) I just can't see how you get 10 lb 9 oz rotor weight comparing = these weights, even though the RX7 rotors are a tad heavier! BTW Tracy's apex seals are 30 grams. George ( down under) ------=_NextPart_000_0032_01C57638.546B2000 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Richard,
Thanks I was aware of that from your = last advice -=20 I included that information for general knowledge.
 
I might add, that weight is for a one = rotor or 10=20 grams each  apex.
George ( down under)
The apex seals are not = included in the=20 balancing because the rotor is not holding their centrifugal force, = the rotor=20 housing is. The same applies to the springs.
 
Richard Sohn
N-2071U
 
 
----- Original Message -----
From:=20 rijakits
To: Rotary motors in = aircraft=20
Sent: Monday, June 20, 2005 = 11:04=20 AM
Subject: [FlyRotary] Re: = Weights

Quich question to balancing:
 
Though your list is not specifically pointed = to=20 balancing.
For a dynamic balance job DO YOU  or DO = YOU NOT=20 include the weight of the apex-seals?
Apparently they should not bear on the = rotor/excenter=20 of the shaft, as the rotorhousing carries their weight at all=20 times.
 
Am I missing something?
 
Leon?
 
Thomas J.
----- Original Message ----- =
From:=20 George Lendich
To: Rotary motors in = aircraft=20
Sent: Monday, June 20, 2005 = 6:18=20 AM
Subject: [FlyRotary] = Weights

Rusty,
Here's some very accurate weights = for your=20 records-
Apex corner seals x6 =3D = 19grams
Apex corner seal springs x = 6 =3D 1=20 gram
Side seal springs x6 =3D1 = gram
Side seals x6 =3D = 25grams
Oil seal springs x4 =3D 10 = grams
Oil seal retainers( = metal) x4 =3D 92=20 grams
Oil 'O' rings x4 =3D 16 = grams
 
Total of 164 grams ( 5.784936=20 oz)
 
Weighed all together 164 grams ( = as a check=20 for accuracy)
 
RX8 Rotor 9.3346lbs( 4243 = grams)
 
I just can't see how you get 10 = lb 9 oz rotor=20 weight comparing these weights, even though the RX7 rotors = are a tad=20 heavier!
 
BTW Tracy's apex seals are 30=20 grams.
George ( down=20 = under)
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