X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mtiwmhc13.worldnet.att.net ([204.127.131.117] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 912732 for flyrotary@lancaironline.net; Sat, 23 Apr 2005 22:32:32 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.131.117; envelope-from=keltro@att.net Received: from 204.127.135.41 ([204.127.135.41]) by worldnet.att.net (mtiwmhc13) with SMTP id <20050424023208113002malde>; Sun, 24 Apr 2005 02:32:13 +0000 Received: from [209.247.222.110] by 204.127.135.41; Sun, 24 Apr 2005 02:32:06 +0000 From: keltro@att.net (Kelly Troyer) To: "Rotary motors in aircraft" Subject: Apex Slot Wear/ Grinding for 3mm Seals Date: Sun, 24 Apr 2005 02:32:06 +0000 Message-Id: <042420050232.1660.426B0526000AC3C50000067C2158766720019D9B040A05@att.net> X-Mailer: AT&T Message Center Version 1 (Feb 14 2005) X-Authenticated-Sender: a2VsdHJvQGF0dC5uZXQ= MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_1660_1114309926_0" --NextPart_Webmail_9m3u9jl4l_1660_1114309926_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Lynn, Ken Welter reported accelerated slot wear after machining his rotors for 3 mm seals.......Granted Ken is pulling about 300 hp for takeoff using nitrus oxide........It was mentioned that the hardened layer at the rotor tips was lost due to grinding for the 3mm seals........Do you know what hardening process is used (induction, etc) and whether it could be restored........Your take on this please Lynn or anyone !! -- Kelly Troyer Dyke Delta/13B/RD1C/EC2 -------------- Original message from Lehanover@aol.com: -------------- > In a message dated 04/23/2005 09:02 Central Daylight Time, > canarder@frontiernet.net writes: > > What I seem to have missed is the compelling reason > why we can't simply mill the slots out to 3 mm, install new seals and > continue the march. > > > This is a common repair on 2MM rotors. > > > Lynn E. Hanover --NextPart_Webmail_9m3u9jl4l_1660_1114309926_0 Content-Type: text/html Content-Transfer-Encoding: 8bit
Lynn,
   Ken Welter reported accelerated slot wear after machining his rotors
for 3 mm seals.......Granted Ken is pulling about 300 hp for takeoff using
nitrus oxide........It was mentioned that the hardened layer at the rotor
tips was lost due to grinding for the 3mm seals........Do you  know what
hardening process is used (induction, etc) and whether it could be
restored........Your take on this please Lynn or anyone !!
--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2
-------------- Original message from Lehanover@aol.com: --------------


> In a message dated 04/23/2005 09:02 Central Daylight Time,
> canarder@frontiernet.net writes:
>
> What I seem to have missed is the compelling reason
> why we can't simply mill the slots out to 3 mm, install new seals and
> continue the march.
>
>
> This is a common repair on 2MM rotors.
>
>
> Lynn E. Hanover
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