X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 26 Oct 2009 08:14:00 -0400 Message-ID: X-Original-Return-Path: Received: from web33905.mail.mud.yahoo.com ([209.191.69.183] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with SMTP id 3899248 for lml@lancaironline.net; Mon, 26 Oct 2009 00:30:32 -0400 Received-SPF: none receiver=logan.com; client-ip=209.191.69.183; envelope-from=wfhannahan@yahoo.com Received: (qmail 37772 invoked by uid 60001); 26 Oct 2009 04:29:57 -0000 DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=HQyQWXEgua5LtZybIr+7kD93BjqyeSHobw01XCNUHDqFPjMe9fZxJEHfCiB9ik0hhvwkYN/oNKS9/0Bix+4NuI/T7ob6/TN6+zqv2fUhJM29KN2Uby7oj/PSL7J1yIYAWl4PLAMdyixGxCm6ZypheEZTVYkM2QnRMgMcoJ1T0nQ=; X-Original-Message-ID: <995122.37765.qm@web33905.mail.mud.yahoo.com> X-YMail-OSG: ZvZVM1YVM1muTvM5mZy4KUPfFnyQJntloRSZxVNzT6oBovgaVNXpupNVk5XdNkjpbLBORCLLI1p5HGRTRHo2fkuGrA2lNOHs.zvaiCH3xHcOM687j7gMfyAhSZ5Jfx1i64ewGnPVslE32st2_wQg7YkPgqm6oJzlj7Fsuy8giPrwAU8nxCYJONnK9k0T_1K9Xcjov_FIiYFh0ds5bMtrRkv8FXcNNbRNHG8ndrgIW8ZDJ4FgXCYRxVoB8.MC8yI7V2FIKAl0nRFWOfl2bYmL5DPd7aP9A27PF_HErUhRpxrFHZnTDmR3YvMwxRH2CVWXqGUnPbntC7inBc2ijW_sEo0lC5_f4RlG0upjlVy.ypzpG2W6huRqzXI5e_dHV1m_c7ft827aa3Pu3u9uhSje4duenpaibjbSVncw Received: from [71.208.25.198] by web33905.mail.mud.yahoo.com via HTTP; Sun, 25 Oct 2009 21:29:56 PDT X-Mailer: YahooMailClassic/7.0.14 YahooMailWebService/0.7.347.3 X-Original-Date: Sun, 25 Oct 2009 21:29:56 -0700 (PDT) From: Bill Hannahan Subject: Wingtip extensions for 320/360? X-Original-To: Lancair Mailing List In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-1861354065-1256531396=:37765" --0-1861354065-1256531396=:37765 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable =0A=0A=0A=0AJust for the record, when I got my fast build kit, around=0A199= 0, I found that the builders had been sloppy about aligning the spars for= =0Amatch drilling, among other things, and some of the holes were close to = the=0Aedge of the aluminum blocks in the spars.=0A=0A=A0=0A=0AMy concern wa= s that this would cause excessive shear loads=0Aon the edge of the block. I= wrote Lancair that I wanted to install two=0Aadditional reinforcing screws= to help transfer the load into the composite=0Astructure and asked for the= ir opinion. Lance wrote that they had just completed=0Athe analysis for win= g tip extensions, and that was the only mod required for=0Athe added bendin= g loads.=0A=0A=A0=0A=0ALater I took the fast build kit back and picked up t= he parts=0Afor a slow build kit. I aligned the spars carefully and added th= e extra screws=0Athough I have not extended the tips.=0A=0A Regards, Bill Hannahan =20 wfhannahan@yahoo.com =0A=0A=0A --0-1861354065-1256531396=:37765 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
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Just for the record, when I got my fast build = kit, around=0A1990, I found that the builders had been sloppy about alignin= g the spars for=0Amatch drilling, among other things, and some of the holes= were close to the=0Aedge of the aluminum blocks in the spars.

=0A=0A

 

=0A=0A

My co= ncern was that this would cause excessive shear loads=0Aon the edge of the = block. I wrote Lancair that I wanted to install two=0Aadditional reinforcin= g screws to help transfer the load into the composite=0Astructure and asked= for their opinion. Lance wrote that they had just completed=0Athe analysis= for wing tip extensions, and that was the only mod required for=0Athe adde= d bending loads.

=0A=0A

 

=0A= =0A

Later I took the fast build kit back and picked u= p the parts=0Afor a slow build kit. I aligned the spars carefully and added= the extra screws=0Athough I have not extended the tips.

=0A= =0A

Regards,
Bill Hannahan


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