X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 23 Apr 2005 11:06:52 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m25.mx.aol.com ([64.12.137.6] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 911843 for lml@lancaironline.net; Fri, 22 Apr 2005 19:28:38 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.6; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-m25.mx.aol.com (mail_out_v38.7.) id q.1e3.3a5ce607 (3858) for ; Fri, 22 Apr 2005 19:27:44 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: <1e3.3a5ce607.2f9ae26c@aol.com> X-Original-Date: Fri, 22 Apr 2005 19:27:40 EDT Subject: Re: [LML] spinner bulkheads X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1114212460" X-Mailer: 9.0 Security Edition for Windows sub 5000 -------------------------------1114212460 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 4/22/2005 6:14:59 P.M. Central Standard Time, n360jr@adelphia.net writes: I am wondering if anyone can tell me if there should be a bulkhead ahead of the prop in the spinner of my 360. The fiberglass spinner seems too flimsy to me. Jim, Hartzell Prop? If so, consider my 320 experience: The spinner back plate absolutely requires doublers (available from Lancair) and the rivets should be bucked, not squeezed. In any event, my back plate doublers shed rivet heads and cracked again and again. My glass reinforced spinner also deteriorated. One reason is that the back plate is often dished when stamped and it flexes. Two years ago I bought the aluminum spinner from ACS and spent several long days preparing it and its back plate (adding the doublers for extra safety). I turned a 1/4" thick nylon bulkhead on a lathe and installed that to the prop piston cap. I love my shiny polished solid aluminum spinner. There is no cracking, etc. So, at a minimum, consider constructing a bulkhead for the spinner. However, not everyone has problems with the original Lancair spinner. Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) Fair and Balanced Opinions at No Charge! Metaphysical Monologues used at your own Risk. -------------------------------1114212460 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 4/22/2005 6:14:59 P.M. Central Standard Time,=20 n360jr@adelphia.net writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>I am wondering if anyone can tell me if there should= be a=20 bulkhead ahead of the prop in the spinner of my 360.  The fiberglass=20 spinner seems too flimsy to me.
Jim,
 
Hartzell Prop?  If so, consider my 320 experience:
 
The spinner back plate absolutely requires doublers (available from=20 Lancair) and the rivets should be bucked, not squeezed.  In any event,=20= my=20 back plate doublers shed rivet heads and cracked again and again. = My=20 glass reinforced spinner also deteriorated.  One reason is that the bac= k=20 plate is often dished when stamped and it flexes.
 
Two years ago I bought the aluminum spinner from ACS and spent several=20= long=20 days preparing it and its back plate (adding the doublers for extra=20 safety).  I turned a 1/4" thick nylon bulkhead on a lathe and installed= =20 that to the prop piston cap.  I love my shiny polished solid aluminum=20 spinner.  There is no cracking, etc.
 
So, at a minimum, consider constructing a bulkhead for the spinner.&nbs= p;=20 However, not everyone has problems with the original Lancair spinner.=20
 
Scott Krueger=20 AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL (KARR)

Fai= r=20 and Balanced Opinions at No Charge!
Metaphysical Monologues used at your=20= own=20 Risk.

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