X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 09 Feb 2006 00:09:26 -0500 Message-ID: X-Original-Return-Path: Received: from imo-d20.mx.aol.com ([205.188.139.136] verified) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 974391 for lml@lancaironline.net; Wed, 08 Feb 2006 01:32:56 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.139.136; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-d20.mx.aol.com (mail_out_v38_r6.3.) id q.20d.121f7c32 (3932) for ; Wed, 8 Feb 2006 01:32:05 -0500 (EST) From: Sky2high@aol.com X-Original-Message-ID: <20d.121f7c32.311aea65@aol.com> X-Original-Date: Wed, 8 Feb 2006 01:32:05 EST Subject: Re: [LML] 235 tires, 320/360 tires and Legacy nose tires X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1139380325" X-Mailer: 9.0 Security Edition for Windows sub 5300 X-Spam-Flag: NO -------------------------------1139380325 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 2/7/2006 11:55:05 P.M. Central Standard Time, dfs155@adelphia.net writes: Looking for some info regarding tires for my 235. I've been using the Chen (or is it Chin?) tires and tubes purchased from Lancair since '93 and in the last couple of years, have had a spate of flats (may be as many as 5 in the last two or three years). My LNC2 uses the original small size tires which, I believe, are also used by most 235's and 320's. My question is, is there another brand of tire/tube available out there that is the same size (no wheel well interference, etc.) but from a better manufacturer? I'm can't figure out what causes the problem (other than perhaps a quality issue) - it's not always the same wheel, it's not always the oldest tire/tube, in every case but one it happened during taxi and it has happened in the winter and in the summer. I have VERY carefully inspected the inside of the hub halves, the inside of new tires and always use tire talcum to prevent tube abrasion and haven't found a thing wrong. Dan, While I have not had many failures myself, I have been a careful observer of others with these tubes. The tires seem ok and there does not seem to be a problem with the tire directly causing a tube failure. On the other hand, I have seen many failures as a result of under-inflated tires leading to excessive wear on the sides of the tube from tire sidewall flex that eventually leads to a pinhole leak in the tube - most are slow leaks. The famous "overnight flat" that some suspected were caused by Chinese Rubber Vampires. I recently had such a failure for a tube that had been in use for a year or more (and had received prophylactic treatment with garlic talc). The pinhole failure in the tube side occurred after I slightly overfilled the tire (45# instead of 42#) two days before a trip - the day after filling the tire it was flat and a submersion test revealed two small pinhole faults in the slightly worn tube side. However, filling the tube and placing a 26# battery on it (but away from the fault) took 3 weeks before the tube became flaccid. Sometimes these failures require the tire be parked in a certain way that emphasizes the tube fault or requires taxiing to initiate the lurking failure. Additionally, there seemed to be a period about 2-3 years ago when tubes failed frequently - but always after varying short times in service. Some have bought spare tubes in that time frame that are only now being installed and failing. I do not know of a better tube manufacturer - it is hard to imagine a worse one. Luckily, I have not heard of blowouts during a normal landing. Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) -------------------------------1139380325 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 2/7/2006 11:55:05 P.M. Central Standard Time,=20 dfs155@adelphia.net writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>Looking=20 for some info regarding tires for my 235. I've been using the Chen
(or=20= is=20 it Chin?) tires and tubes purchased from Lancair since '93 and in the
l= ast=20 couple of years, have had a spate of flats (may be as many as 5 in the
= last=20 two or three years). My LNC2 uses the original small size tires which,
= I=20 believe, are also used by most 235's and 320's.

My question is, is=20 there another brand of tire/tube available out there that
is the same s= ize=20 (no wheel well interference, etc.) but from a=20 better
manufacturer?

I'm can't figure out what causes the proble= m=20 (other than perhaps a quality
issue) - it's not always the same wheel,=20= it's=20 not always the oldest
tire/tube, in every case but one it happened duri= ng=20 taxi and it has happened
in the winter and in the summer. I have VERY=20 carefully inspected the inside
of the hub halves, the inside of new tir= es=20 and always use tire talcum to
prevent tube abrasion and haven't found a= =20 thing wrong.
Dan,
 
While I have not had many failures myself, I have been a careful observ= er=20 of others with these tubes.  The tires seem ok and there does not seem=20= to=20 be a problem with the tire directly causing a tube failure.  On the oth= er=20 hand, I have seen many failures as a result of under-inflated tires leading=20= to=20 excessive wear on the sides of the tube from tire sidewall flex that=20 eventually leads to a pinhole leak in the tube - most are slow leaks.&n= bsp;=20 The famous "overnight flat" that some suspected were caused by Chinese Rubbe= r=20 Vampires. 
 
I recently had such a failure for a tube that had been in use for a yea= r or=20 more (and had received prophylactic treatment with garli= c=20 talc).  The pinhole failure in the tube side occurred after I slightly=20 overfilled the tire (45#  instead of 42#) two days before a trip - the=20= day=20 after filling the tire it was flat and a submersion test revealed two small=20 pinhole faults in the slightly worn tube side.  However, fill= ing=20 the tube and placing a 26# battery on it (but away from the fault) took= 3=20 weeks before the tube became flaccid.  Sometimes these failures require= the=20 tire be parked in a certain way that emphasizes the tube fault or requi= res=20 taxiing to initiate the lurking failure.
 
Additionally, there seemed to be a period about 2-3 years ago=20 when tubes failed frequently - but always after varying short times in=20 service.  Some have bought spare tubes in that time frame that are only= =20 now being installed and failing.
 
I do not know of a better tube manufacturer - it is hard to imagine a w= orse=20 one.  Luckily, I have not heard of blowouts during a normal landing.
 
Scott Krueger=20 AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL=20 (KARR)
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