Return-Path: Received: from [24.25.9.100] (HELO ms-smtp-01-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2.1) with ESMTP id 400488 for flyrotary@lancaironline.net; Tue, 07 Sep 2004 11:07:47 -0400 Received-SPF: none receiver=logan.com; client-ip=24.25.9.100; envelope-from=eanderson@carolina.rr.com Received: from EDWARD (cpe-069-132-183-211.carolina.rr.com [69.132.183.211]) by ms-smtp-01-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i87F7IPg019385 for ; Tue, 7 Sep 2004 11:07:19 -0400 (EDT) Message-ID: <002501c494ec$63d654c0$2402a8c0@EDWARD> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Temperature limits on Locknuts Date: Tue, 7 Sep 2004 11:07:27 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0022_01C494CA.DC92A840" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0022_01C494CA.DC92A840 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Mark, I currently use the ones provided by Tracy for the Redrive. I = intend to replace them with the metal type, but need to order that size. = Also, I want to check with Tracy and make certain there is no reason = (that I have not considered ) against using them. Again, I admit that its probably overkill and unnecessary. On the = other hand, I see no reason not to use metal locknuts as appears to be a = common practice for FWF. Ed =20 Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ----- Original Message -----=20 From: Mark Steitle=20 To: Rotary motors in aircraft=20 Sent: Tuesday, September 07, 2004 10:46 AM Subject: [FlyRotary] Re: Temperature limits on Locknuts Ed,=20 I recently became aware of the practice of using only metal locknuts = on everything fwf. So, I ordered a couple dozen of each size and = replaced everything fwf on my installation except for the ones used on = the psru bolts. Did you change those to metal or use the nylon supplied = with the redrive? =20 Mark S. Mark S. At 10:43 PM 9/5/2004 -0400, you wrote: Attached is what I found with a quick search for locknuts with = plastic/nylon inserts. The max temperature range is listed as 250F. = The metal ones go up to 1000F. So perhaps metal is overkill - but 250F = does not provide me with a comfort margin I would like under the cowl. =20 I agree that the prop bolt nuts should never see 250F, but, the = question is what effect elevated temperatures short of 250F do to the = life of the material. =20 =20 So it would appear that what ever makes you feel comfortable would = be the way to go. Me, for the prop and most things forward of the = firewall, I'll continue to use the Metal Lock nuts. =20 =20 Ed =20 =20 Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC =20 =20 >> Homepage: http://www.flyrotary.com/ >> Archive: http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_000_0022_01C494CA.DC92A840 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Mark, I currently use  the = ones provided=20 by Tracy for the Redrive.  I intend to replace them with the metal = type,=20 but need to order that size.  Also, I want to check with Tracy and = make=20 certain there is no reason (that I have not considered ) against = using=20 them.
 
  Again, I admit that = its  probably=20 overkill and unnecessary.   On the other hand, I see no = reason=20 not to use metal locknuts as appears to be a common practice for=20 FWF.
 
Ed
   
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
From:=20 Mark=20 Steitle
Sent: Tuesday, September 07, = 2004 10:46=20 AM
Subject: [FlyRotary] Re: = Temperature=20 limits on Locknuts

Ed,
I recently became aware of the = practice of=20 using only metal locknuts on everything fwf.  So, I ordered a = couple=20 dozen of each size and replaced everything fwf on my installation = except for=20 the ones used on the psru bolts.  Did you change those to metal = or use=20 the nylon supplied with the redrive? 

Mark = S.


Mark=20 S.    At 10:43 PM 9/5/2004 -0400, you wrote:
Attached=20 is what I found with a quick search for locknuts with plastic/nylon=20 inserts.  The max temperature range is listed as 250F.  = The metal=20 ones go up to 1000F.  So perhaps metal is overkill - but 250F = does not=20 provide me with a comfort margin I would like under the = cowl.
 
I agree = that the prop=20 bolt nuts should never see 250F, but, the question is what effect = elevated=20 temperatures short of 250F do to the life of the material. =20
 
So it would=20 appear that what ever makes you feel comfortable would be the way to = go.  Me, for the prop and most things forward of the firewall, = I'll=20 continue to use the Metal Lock nuts. 
 
Ed
 
 
Ed=20 Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
 
 

>>  Homepage:  = http://www.flyrotary.com/
>> =20 Archive:   http://lancaironline.net/lists/flyrotary/List.html=
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