X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from sccrmhc13.comcast.net ([204.127.202.64] verified) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTP id 1007354 for flyrotary@lancaironline.net; Mon, 20 Jun 2005 08:25:53 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.202.64; envelope-from=kenpowell@comcast.net Received: from 204.127.205.149 ([204.127.205.149]) by comcast.net (sccrmhc13) with SMTP id <20050620122453016000mor0e>; Mon, 20 Jun 2005 12:25:03 +0000 Received: from [68.51.45.41] by 204.127.205.149; Mon, 20 Jun 2005 12:24:52 +0000 From: kenpowell@comcast.net To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Weights Date: Mon, 20 Jun 2005 12:24:52 +0000 Message-Id: <062020051224.27922.42B6B594000D5DB800006D12220075894204040A99019F020A05@comcast.net> X-Mailer: AT&T Message Center Version 1 (Dec 17 2004) X-Authenticated-Sender: a2VucG93ZWxsQGNvbWNhc3QubmV0 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_27922_1119270292_0" --NextPart_Webmail_9m3u9jl4l_27922_1119270292_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit George, Thanks for a great post. This is the first time I have seen the REAL (measured) weight of the RX8 rotor. I have seen 8.2 and 8.7 lbs in print several times - proves you can't believe everything you read! Ken Powell Bryant, Arkansas 501-847-4721 C150 / RV-4 -------------- Original message -------------- Rusty, Here's some very accurate weights for your records- Apex corner seals x6 = 19grams Apex corner seal springs x 6 = 1 gram Side seal springs x6 =1 gram Side seals x6 = 25grams Oil seal springs x4 = 10 grams Oil seal retainers( metal) x4 = 92 grams Oil 'O' rings x4 = 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_Webmail_9m3u9jl4l_27922_1119270292_0 Content-Type: text/html Content-Transfer-Encoding: 8bit
George,
Thanks for a great post.  This is the first time I have seen the REAL (measured) weight of the RX8 rotor.  I have seen 8.2 and 8.7 lbs in print several times - proves you can't believe everything you read!

Ken Powell
Bryant, Arkansas
501-847-4721
C150 / RV-4
 
-------------- Original message --------------
Rusty,
Here's some very accurate weights for your records-
Apex corner seals x6 = 19grams
Apex corner seal springs x 6 = 1 gram
Side seal springs x6 =1 gram
Side seals x6 = 25grams
Oil seal springs x4 = 10 grams
Oil seal retainers( metal) x4 = 92 grams
Oil 'O' rings x4 = 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)
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