X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail11.syd.optusnet.com.au ([211.29.132.192] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTPS id 912680 for flyrotary@lancaironline.net; Sat, 23 Apr 2005 20:34:11 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.192; envelope-from=lendich@optusnet.com.au Received: from george (d211-31-165-97.dsl.nsw.optusnet.com.au [211.31.165.97]) by mail11.syd.optusnet.com.au (8.12.11/8.12.11) with SMTP id j3O0XMGi009662 for ; Sun, 24 Apr 2005 10:33:23 +1000 Message-ID: <005301c54865$c5285a20$205c1fd3@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] WARNING V Grooves Date: Sun, 24 Apr 2005 10:37:18 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0050_01C548B9.96897E70" 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_0050_01C548B9.96897E70 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ed, How many times must it be said, by some many, until the few accept it ? It's only Logical, that the clearance limit stated, is there for a = reason. Mind you I didn't fully appreciate it myself, until your particular = problem and those locally, highlighted the issues. However I'm prepared to learn from yours and other mistakes Or = oversights may be a better term. George ( down under) I don't how I missed it before, but I was reading over the helpful = instruction set that Tracy sends out with the Overhaul Kit. There is = only ONE thing that they suggest checking on your rotary engine. Quote: " Check the apex seal groove carefully. The stock seals tend = to wear a "V" shape at the opening (mouth) of the groove (rotor). If = the grooves have been "V'ed" more than 0.010" clearance, (a groove = opening width of more than 0.125") your rotor MUST be replaced or = machined to accept 3mm apex seals. The overall seal to rotor clearance = should be 0.002 to 0.006". I added the red and bold to = the "must" in the statement (Ed) So I think its quite clear that Bruce T (whom I assume provided the = input on the instructions) feels that "V" apex grooves could lead to BAD = things. Now my V was outside Mazda spec but within the limits of above = - however, if all the factors stack up against you at the same time, = perhaps bad things could happen before you reach the above limit. FWIW Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com ------=_NextPart_000_0050_01C548B9.96897E70 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Ed,

How many times must it be said, by some = many, until=20 the few accept it ?

It's only Logical, that the clearance = limit=20 stated, is there for a reason.

Mind you I didn't fully appreciate it=20 myself, until your particular problem and those locally, = highlighted the=20 issues.

However I'm prepared to learn from = yours and other=20 mistakes Or oversights may be a=20 better term.

George ( down under)

I don't how I missed it before, but I = was reading=20 over the helpful instruction set that Tracy sends out with the = Overhaul=20 Kit. There is only ONE thing that they suggest checking on your = rotary=20 engine.

Quote: " Check the apex seal = groove=20 carefully. The stock seals tend to wear a "V" shape at the = opening=20 (mouth) of the groove (rotor). If the grooves have been "V'ed" = more than=20 0.010" clearance, (a groove opening width of more than 0.125") your = rotor=20 MUST be replaced or = machined to=20 accept 3mm apex seals. The overall seal to rotor clearance = should be=20 0.002 to=20 = 0.006". = =20 I added the red and bold to the "must" in the statement=20 (Ed)

So I think its quite clear that Bruce = T (whom I=20 assume provided the input on the instructions) feels that "V" apex = grooves=20 could lead to BAD things. Now my V was outside Mazda spec but = within the=20 limits of above - however, if all the factors stack up against you at = the same=20 time, perhaps bad things could happen before you reach the above=20 limit.

FWIW

Ed

Ed Anderson
Rv-6A N494BW Rotary=20 Powered
Matthews, NC
eanderson@carolina.rr.com

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