X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 2 [X] Return-Path: Received: from imo-d22.mx.aol.com ([205.188.144.208] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 2028540 for flyrotary@lancaironline.net; Sun, 06 May 2007 08:45:39 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.144.208; envelope-from=Lehanover@aol.com Received: from Lehanover@aol.com by imo-d22.mx.aol.com (mail_out_v38_r9.2.) id q.d17.d0b657c (39331) for ; Sun, 6 May 2007 08:44:24 -0400 (EDT) From: Lehanover@aol.com Message-ID: Date: Sun, 6 May 2007 08:44:22 EDT Subject: Re: [FlyRotary] Re: Engine mount mockup To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1178455462" X-Mailer: 9.0 Security Edition for Windows sub 5366 X-Spam-Flag: NO -------------------------------1178455462 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable =20 In a message dated 5/5/2007 8:38:49 P.M. Eastern Daylight Time, =20 M.Silvius@worldnet.att.net writes: Kelly: The angle bracket on the firewall is actually per the design of the Falcona= r F-12. A lot of Jodel engine mounts are this as well. The plans are unclear as to material it only indicates 1&=BD" x1/8 thick angle. I tried finding t= his in 4130 but was unable to so I settled for mild steel. The triangular end caps are a great idea and I think I will use it. The design does call, for=20= a strap to be welded so that it bridges the tube to angle iron on the back side as well. Here is an example as seen on Hans Teijgeler's Jodel DR1050 with a Subaru in Holland. The design is not what is commonly seen for that kind of junction. It leave= s=20 the angles in bending along the fold lines. However, if the loads are not =20 enough to cycle the joint in bending, then it's good enough. The mild steel=20= to =20 4130 connection is OK for light loads. =20 The angle inserts in 4130 would help a bit. Double the part of the angle =20 against the firewall with a piece of 1/8 4130 as a big washer but don't load= the =20 bend (or weld area). =20 Paint the bend and the tube to angle joints with just a bit of white =20 lacquer. Grit blast the joints with rice hulls and paint without any primer.= Just=20 enough to prevent rusting.=20 =20 Should a problem develop, the paint will crack along the failure and be =20 obvious. Enamels and powder coats will stretch and conceal the crack.=20 =20 Lynn E. Hanover=20 ************************************** See what's free at http://www.aol.com= . -------------------------------1178455462 Content-Type: text/html; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable
In a message dated 5/5/2007 8:38:49 P.M. Eastern Daylight Time,=20 M.Silvius@worldnet.att.net writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000=20 size=3D2>Kelly:

The angle bracket on the firewall is actually per t= he=20 design of the Falconar
F-12. A lot of Jodel engine mounts are this as w= ell.=20 The plans are unclear
as to material it only indicates 1&=BD" x1/8=20= thick=20 angle. I tried finding this
in 4130 but was unable to so I settled for=20= mild=20 steel. The triangular end
caps are a great idea and I think I will use=20= it.=20 The design does call, for a
strap to be welded so that it bridges the t= ube=20 to angle iron on the back
side as well. Here is an example as seen on H= ans=20 Teijgeler's Jodel DR1050
with a Subaru in=20 Holland.
The design is not what is commonly seen for that kind of junction. It=20 leaves the angles in bending along the fold lines. However, if the loads are= not=20 enough to cycle the joint in bending, then it's good enough. The mild steel=20= to=20 4130 connection is OK for light loads.
 
The angle inserts in 4130 would help a bit. Double the part of the angl= e=20 against the firewall with a piece of 1/8 4130 as a big washer but don't load= the=20 bend (or weld area).
 
Paint the bend and the tube to angle joints with just a bit of white=20 lacquer. Grit blast the joints with rice hulls and paint without any primer.= =20 Just enough to prevent rusting.
 
Should a problem develop, the paint will crack along the failure and be= =20 obvious. Enamels and powder coats will stretch and conceal the=20 crack. 
 
Lynn E. Hanover 



See what's free at AOL.com.
-------------------------------1178455462--