X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 18 Aug 2011 10:32:05 -0400 Message-ID: X-Original-Return-Path: Received: from tatertot.formysite.com ([64.58.34.69] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTPS id 5096170 for lml@lancaironline.net; Thu, 18 Aug 2011 10:06:53 -0400 Received-SPF: none receiver=logan.com; client-ip=64.58.34.69; envelope-from=randall.harris@aircraft-specialties.com Received: from RandallV230 (wsip-70-168-68-155.tu.ok.cox.net [::ffff:70.168.68.155]) by tatertot.formysite.com with esmtp; Thu, 18 Aug 2011 09:06:16 -0500 id 000A6BF2.4E4D1C59.00003867 From: "Randall Harris" X-Original-To: bronnenmeier@GROBSYSTEMS.COM X-Original-Cc: lml@lancaironline.net References: In-Reply-To: Subject: RE: static wicks X-Original-Date: Thu, 18 Aug 2011 09:07:44 -0500 X-Original-Message-ID: <002e01cc5db0$33ae7400$9b0b5c00$@aircraft-specialties.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002F_01CC5D86.4ADAB5F0" X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQG+dExAj9whXsthBBFWNki7Kyk+b5U+clKQ Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_002F_01CC5D86.4ADAB5F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ralf, =20 History has shown that the a majority of lightning strikes exit the = aircraft from the top of the rudder. Fiberglass rudder surfaces usually blow = apart in some fashion with scorch/burn marks. Because the vertical fin and = rudder are nonconductive, in an air flow they act like other plastics and accumulate a static charge. Painting with even a mildly conductive = primer helps reduce static effects. You can install static wicks in a = fiberglass rudder by running a =BC in braided bonding strap internally from the = static wick mounts to the top hinge. Then jump across the hinge with a short bonding strap, then down to your ground connection. I utilized three = knurled receptacles potted in the trailing edge of my rudder and tied them = together at the top hinge. It=92s easy to do on an unpainted surface, but will = require paint touch-up if you are already flying. =20 Regards, Randy Harris L-IV B524BA =20 =20 From: bronnenmeier@GROBSYSTEMS.COM [mailto:bronnenmeier@GROBSYSTEMS.COM] = Sent: Wednesday, August 17, 2011 9:08 AM To: lml@lancaironline.net Subject: static wicks =20 Dear subscribers, =20 I am finally put my static wicks on. I put 2 on each aileron and on each elevator. I made sure that I have a good electrical connection to my = engine ground. =20 I got 2 wicks left now. My rudder is made out of fiberglass so I assume = it is not conductive. My small wingtips are also made out of fiberglass. I = did not use conductive primer or anything else to make them conductive. =20 Is there a need to put these on now or would it be worthless? =20 Since I had the control surfaces off anyway I put gap seals in place =96 = so I should be able to tell soon if there is a speed increase (given they = don=92t come off) =20 Thanks =20 Ralf ------=_NextPart_000_002F_01CC5D86.4ADAB5F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Ralf,

History has shown that = the a majority of lightning strikes exit the aircraft from the top of = the rudder. Fiberglass rudder surfaces usually blow apart in some = fashion with scorch/burn marks. =A0Because the vertical fin and rudder = are nonconductive, in an air flow they act like other plastics and = accumulate a static charge. Painting with even a mildly conductive = primer helps reduce static effects. You can install static wicks in a = fiberglass rudder by running a =BC in braided bonding strap internally = from the static wick mounts to the top hinge. Then jump across the hinge = with a short bonding strap, then down to your ground connection. I = utilized three knurled receptacles potted in the trailing edge of my = rudder and tied them together at the top hinge.=A0 It’s easy to do = on an unpainted surface, but will require paint touch-up if you are = already flying.

Regards,

Randy = Harris

L-IV B524BA =A0

From:= = bronnenmeier@GROBSYSTEMS.COM [mailto:bronnenmeier@GROBSYSTEMS.COM] =
Sent: Wednesday, August 17, 2011 9:08 AM
To: = lml@lancaironline.net
Subject: static = wicks

Dear = subscribers,

I am finally put my static wicks on. I put 2 on each = aileron and on each elevator. I made sure that I have a good electrical = connection to my engine ground.

I got 2 = wicks left now. My rudder is made out of fiberglass so I assume it is = not conductive. My small wingtips are also made out of fiberglass. I did = not use conductive primer or anything else to make them = conductive.

Is there a need to put these on now or would it be = worthless?

Since I had the control surfaces off anyway I put gap = seals in place – so I should be able to tell soon if there is a = speed increase (given they don’t come off)

Thanks

Ralf

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