X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 09 Jun 2014 07:37:37 -0400 Message-ID: X-Original-Return-Path: Received: from BLU004-OMC3S22.hotmail.com ([65.55.116.97] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTP id 6924705 for lml@lancaironline.net; Sat, 07 Jun 2014 19:34:24 -0400 Received-SPF: pass receiver=logan.com; client-ip=65.55.116.97; envelope-from=gary21sn@hotmail.com Received: from BLU172-DS1 ([65.55.116.73]) by BLU004-OMC3S22.hotmail.com with Microsoft SMTPSVC(7.5.7601.22701); Sat, 7 Jun 2014 16:33:51 -0700 X-TMN: [Q6hWHXtoKrPhwNXUeSc4083gPzw86oR2] X-Originating-Email: [gary21sn@hotmail.com] X-Original-Message-ID: X-Original-Return-Path: gary21sn@hotmail.com From: "Gary Edwards" X-Original-To: "Lancair Mailing List" References: Subject: Re: MLG tires hitting upper wing skin X-Original-Date: Sat, 7 Jun 2014 16:33:53 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0047_01CF826E.4557D030" X-Priority: 3 In-Reply-To: X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V11.00.0028.1500 Seal-Send-Time: Sat, 7 Jun 2014 16:33:53 -0700 X-OriginalArrivalTime: 07 Jun 2014 23:33:51.0498 (UTC) FILETIME=[F050D6A0:01CF82A8] This is a multi-part message in MIME format. ------=_NextPart_000_0047_01CF826E.4557D030 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable =20 I've never had that issue. I definitely don't run that much air = pressire in the tires, but I wouldn't think high air pressure would make = them wider anyway. =20 The mains just touch the upper skin but close fully, which is what I = like. It gives them something to be up against rather than hanging = there loose. =20 =20 Clearance the upper inner skin/foam to clear the tire, and add 3 bid = covering. It probably won't be a very big area to get clearanced. = Where mine touches is only a few square inches of area. =20 Gary E 235/320 Medford, Oregon =20 ----- Original Message -----=20 From: John Cooper=20 To: Lancair Mailing List=20 Sent: Saturday, June 7, 2014 8:15 AM Subject: [LML] [LNC2] MLG tires hitting upper wing skin After replacing the original Rosenhan brake calipers that came with my=20 L-235 with new Matco B5-4 units, the tire now contacts the underside of=20 the upper wing skin just before the gear is fully retracted. As you all=20 know, the brake mounting plates fit between the aluminum gear casting=20 and the axle. The old Rosenhan die-cast brake plates were .210 thick.=20 The new Matco brake plates are only .125 thick, so I had to add shims=20 between the casting and axle to keep the brake disc properly "centered"=20 between the brake pads. On my latest installation, the distance between=20 the gear casting and the axle is now .310, which extends the wheel and=20 tire out .100 more than before. The gear door is probably only .060=20 away from closing when the tire hits the underside of the upper wing=20 skin, so the addition of the shims seems to have caused the problem. I originally had 70 PSI in my Cheng Shen MLG tires and bled them down to = 60 PSI but that didn't help. Today I will attempt to reduce the thickness of the shims, but I fear=20 that's not going to work because the new Matco brake pads are thicker=20 than the old Rosenhan pads and need more clearance to allow for wear. So the only options I can think of at this point would be to 1. carve=20 out a crescent of the upper wing skin core where the tire it hitting, 2. = grind down the ridge on the tire where the tread meets the sidewall, 3.=20 Reform the middle gear door, or 4. fly with the aft edge of the middle=20 gear door about 1/16" away from being flush. Has anyone run into this problem? Any suggestions? -- For archives and unsub = http://mail.lancaironline.net:81/lists/lml/List.html ------=_NextPart_000_0047_01CF826E.4557D030 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable =20 =20 =20
I've never had that issue.  I definitely don't run that much = air=20 pressire in the tires, but I wouldn't think high air pressure would make = them=20 wider anyway.
 
The mains just touch the upper skin but close fully, which is what = I=20 like.  It gives them something to be up against rather than hanging = there=20 loose. 
 
Clearance the upper inner skin/foam to clear the tire, and add 3 = bid=20 covering.  It probably won't be a very big area to get = clearanced. =20 Where mine touches is only a few square inches of area.
 
Gary E
235/320
Medford, Oregon
   
-----=20 Original Message -----
From:=20 John=20 Cooper
Sent:=20 Saturday, June 7, 2014 8:15 AM
Subject:=20 [LML] [LNC2] MLG tires hitting upper wing skin

After replacing the original Rosenhan brake calipers = that came=20 with my
L-235 with new Matco B5-4 units, the tire now contacts the = underside of
the upper wing skin just before the gear is fully = retracted.=20 As you all
know, the brake mounting plates fit between the = aluminum gear=20 casting
and the axle. The old Rosenhan die-cast brake plates were = .210=20 thick.
The new Matco brake plates are only .125 thick, so I had to = add=20 shims
between the casting and axle to keep the brake disc properly = "centered"
between the brake pads. On my latest installation, the = distance=20 between
the gear casting and the axle is now .310, which extends = the wheel=20 and
tire out  .100 more than before. The gear door is = probably only=20 .060
away from closing when the tire hits the underside of the = upper wing=20
skin, so the addition of the shims seems to have caused the=20 problem.

I originally had 70 PSI in my Cheng Shen MLG tires and = bled=20 them down to
60 PSI but that didn't help.

Today I will = attempt to=20 reduce the thickness of the shims, but I fear
that's not going to = work=20 because the new Matco brake pads are thicker
than the old Rosenhan = pads=20 and need more clearance to allow for wear.

So the only options = I can=20 think of at this point would be to 1. carve
out a crescent of the = upper=20 wing skin core where the tire it hitting, 2.
grind down the ridge = on the=20 tire where the tread meets the sidewall, 3.
Reform the middle gear = door,=20 or 4. fly with the aft edge of the middle
gear door about 1/16" = away from=20 being flush.

Has anyone run into this problem? Any=20 suggestions?


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