X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail08.syd.optusnet.com.au ([211.29.132.189] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTPS id 2150819 for flyrotary@lancaironline.net; Sat, 30 Jun 2007 23:07:30 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.189; envelope-from=lendich@optusnet.com.au Received: from george (d211-31-111-44.dsl.nsw.optusnet.com.au [211.31.111.44]) by mail08.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id l6136mph013075 for ; Sun, 1 Jul 2007 13:06:49 +1000 Message-ID: <001201c7bb8c$e1bd8ce0$2c6f1fd3@george> From: "George Lendich" To: "Rotary motors in aircraft" Subject: Fw: RX8 Rotors Date: Sun, 1 Jul 2007 13:06:54 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000F_01C7BBE0.B2610680" 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 X-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_000F_01C7BBE0.B2610680 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable For the chap considering cutting 3mm apex seal slots in an Rx8 rotor. I measured the internals of the RX8 and Rx7 rotors and although there = are differences, not so much to worry in this area. In the RX7 rotor the depth of material in 1.5mm below the corner seal = area. For the Rx8 it is about at the bottom of the corner seal area or about = 1.5mm shallower - still plenty of room for a deeper and wider cut to = 3mm.=20 The width is only .5mm extra each side, and the RX8 appears to be of the = same width of material as the RX7. What initially concerned me was the corner seal area, however the metal = is quite thick in that area and is probably why they remove material in = that area, when balancing the rotor. Hope that helps - I will get my 3mm in Rx8 rotor cut next week with = luck. I will also have the rotor balanced to check if the weight is = symmetrical. George ( down under) ------=_NextPart_000_000F_01C7BBE0.B2610680 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

For the chap considering cutting 3mm = apex seal=20 slots in an Rx8 rotor.
I measured the internals of the RX8 and = Rx7 rotors=20 and although there are differences, not so much to worry in this=20 area.
 
In the RX7 rotor the depth of material = in 1.5mm=20 below the corner seal area.
For the Rx8 it is about at the bottom = of the corner=20 seal area or about 1.5mm shallower - still plenty of room for a deeper = and wider=20 cut to 3mm. 
The width is only .5mm extra each side, = and the RX8=20 appears to be of the same width of material as the RX7.
 
What initially concerned me was the = corner seal=20 area, however the metal is quite thick in that area and is probably why = they=20 remove material in that area, when balancing the rotor.
 
Hope that helps - I will get my 3mm in = Rx8 rotor=20 cut next week with luck. I will also have the rotor balanced to check if = the=20 weight is symmetrical.
George ( down = under)
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