X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 06 Dec 2011 13:14:54 -0500 Message-ID: X-Original-Return-Path: Received: from nm5-vm0.bullet.mail.bf1.yahoo.com ([98.139.213.150] verified) by logan.com (CommuniGate Pro SMTP 5.4.2) with SMTP id 5294225 for lml@lancaironline.net; Tue, 06 Dec 2011 11:28:19 -0500 Received-SPF: none receiver=logan.com; client-ip=98.139.213.150; envelope-from=chris_zavatson@yahoo.com Received: from [98.139.212.146] by nm5.bullet.mail.bf1.yahoo.com with NNFMP; 06 Dec 2011 16:27:45 -0000 Received: from [98.139.212.194] by tm3.bullet.mail.bf1.yahoo.com with NNFMP; 06 Dec 2011 16:27:45 -0000 Received: from [127.0.0.1] by omp1003.mail.bf1.yahoo.com with NNFMP; 06 Dec 2011 16:27:45 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 812086.7861.bm@omp1003.mail.bf1.yahoo.com Received: (qmail 77055 invoked by uid 60001); 6 Dec 2011 16:27:45 -0000 DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=sUWmyL0Fw9hY8Gk/flmYM0PjQt1kV5nkEmEqbN3QfzobYVIKN+Ssk+vDMXDgKGlRsqUWIwzg7wPGn1KbMPFffV7ZOFliqmECRgw/0+bleGGFFOyOFNyP1fNPoOX39o52G5dSOC3CRa6oMCRo9bpjh+JwIrk5GsJDl/Q7oQF5mlY=; X-YMail-OSG: rJr.iswVM1n8JMUZO6yvbrubiLF7vVBtNkbBnIsepmrYc.w CPzxrRIpE Received: from [12.130.164.194] by web36904.mail.mud.yahoo.com via HTTP; Tue, 06 Dec 2011 08:27:44 PST X-Mailer: YahooMailWebService/0.8.115.331698 References: X-Original-Message-ID: <1323188864.73806.YahooMailNeo@web36904.mail.mud.yahoo.com> X-Original-Date: Tue, 6 Dec 2011 08:27:44 -0800 (PST) From: Chris Zavatson Reply-To: Chris Zavatson Subject: Re: [LML] Re: [Norton AntiSpam][LML] Re: Legacy vibrations resolved X-Original-To: Lancair Mailing List In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-2114655128-1181008-1323188864=:73806" ---2114655128-1181008-1323188864=:73806 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Bill,=0AThe stock pin size at the time of my testing was 0.085".=C2=A0 Some= time later I saw a notice on the Carbinge website stating they had switche= d to .080" as the new standard.=C2=A0 I have some of that material as well = and it measured out at 0.078", like your sample.=0AYes, Nylon increases dim= ensionally with moisture.=C2=A0 There a lot of papers out there that quanti= fy the effect.=C2=A0 -also how to mitigate it, such as adding glass fiber e= tc.=0AChris=0A=C2=A0=0AChris Zavatson=0AN91CZ=0A360std=0Awww.N91CZ.net=0A= =0AFrom: Bill Wade =0ATo: lml@lancaironline.= net =0ASent: Tuesday, December 6, 2011 5:43 AM=0ASubject: [LML] Re: [Norton= AntiSpam][LML] Re: Legacy vibrations resolved=0A=0A=0AHi Chris-=0A=0A=C2= =A0 That=E2=80=99s a bit worrisome. Does Nylon swell when it absorbs moistu= re? Shrinkage could cause a double whammy- loosening not only the pin fit b= ut also the fit of the sleeve in the carbon bore.=0A=0A=C2=A0 Your earlier = post mentioned a pin diameter of 0.085=E2=80=9D. The stock pins I measured = with my Ebay Chinese calipers showed 0.078-79, so the 0.083 diameter I sett= led on improved the fit. In your case that would result in a looser hinge. = It appears that anyone who wanted a tighter fit might have to experiment wi= th a range of sizes as I did initially.=0A=0A=C2=A0 I accidentally got some= Superfil in one of the hinge bores. After pushing out the resulting plug i= t measured 0.090 (for reference only- your results may vary). That might be= a way for anyone else to get a starting measurement for pin sizing.=C2=A0= =C2=A0 -Bill Wade=0A=0AFrom: Chris Zavatson =0ASent: Monday, December 05, 2= 011 8:58 AM=0ATo: lml@lancaironline.net =0ASubject: [Norton AntiSpam][LML] = Re: Legacy vibrations resolved=0A.....=0A=C2=A0=0ANylon is hydroscopic.=C2= =A0 This means Nylon absorbs moisture and changes dimensionally as it does = so.=C2=A0 In many applications this can be accommodated, but here a change = of just one percent would turn a nice close fit into a no-fit. Many papers = have been devoted to quantifying the relationship between relative humidity= , moisture content and dimensional part growth.=C2=A0 Nylon is not well sui= ted for applications where dimensional stability is needed.=C2=A0 Extra dim= ensional tolerance must be allowed in design to accommodate this characteri= stic.=0A=C2=A0=0A.... ---2114655128-1181008-1323188864=:73806 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Bill,
The stock pin size a= t the time of my testing was 0.085".  Some time later I saw a notice o= n the Carbinge website stating they had switched to .080" as the new standa= rd.  I have some of that material as well and it measured out at 0.078= ", like your sample.
Yes, Nylon increases= dimensionally with moisture.  There a lot of papers out there that qu= antify the effect.  -also how to mitigate it, such as adding glass fib= er etc.
Chris
 
Chris Zavatson
N91CZ
360std

From:= Bill Wade <super_chipmunk@roadrunner.com>
To: lml@lancaironline.net
Sent: Tuesday, December 6, 2011 5:43= AM
Subject: [LML] Re: [= Norton AntiSpam][LML] Re: Legacy vibrations resolved

Hi Chris-
 
  That=E2=80=99s a bit worrisome. Does Nylo= n swell when it absorbs moisture? Shrinkage could cause a double whammy- lo= osening not only the pin fit but also the fit of the sleeve in the carbon b= ore.
 
  Your earlier post mentioned a pin diamete= r of 0.085=E2=80=9D. The stock pins I measured with my Ebay Chinese caliper= s showed 0.078-79, so the 0.083 diameter I settled on improved the fit. In = your case that would result in a looser hinge. It appears that anyone who w= anted a tighter fit might have to experiment with a range of sizes as I did= initially.
 
  I accidentally got some Superfil in one o= f the hinge bores. After pushing out the resulting plug it measured 0.090 (= for reference only- your results may vary). That might be a way for anyone = else to get a starting measurement for pin sizing.   -Bill Wade
 
Sent: Monday, December 05, 2011 8:58 AM
Subject: [Norton AntiSpam][LML] Re: Legacy vibrations resolved<= /DIV>
 
.....
&nb= sp;
Nylon is hydroscopic.  This m= eans Nylon absorbs moisture and changes dimensionally as it does so.&= nbsp; In many applications this can be accommodated, but here a chan= ge of just one percent would turn a nice close fit into a no-fit. Many pape= rs have been devoted to quantifying the relationship between relative humid= ity, moisture content and dimensional part growth.  Nylon= is not well suited for applications where dimensional stability is needed.=   Extra dimensional tolerance must be allowed in design t= o accommodate this characteristic.
 
....=
 


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