X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 25 May 2006 20:24:33 -0400 Message-ID: X-Original-Return-Path: Received: from wind.imbris.com ([216.18.130.7] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTPS id 1127526 for lml@lancaironline.net; Thu, 25 May 2006 10:05:13 -0400 Received-SPF: none receiver=logan.com; client-ip=216.18.130.7; envelope-from=brent@regandesigns.com Received: from [192.168.1.100] (wireless-216-18-135-19.imbris.com [216.18.135.19]) (authenticated bits=0) by wind.imbris.com (8.12.11/8.12.11.S) with ESMTP id k4PE4JSl071288 for ; Thu, 25 May 2006 07:04:23 -0700 (PDT) (envelope-from brent@regandesigns.com) X-Original-Message-ID: <4475B95E.8090309@regandesigns.com> X-Original-Date: Thu, 25 May 2006 07:04:14 -0700 From: Brent Regan User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 X-Original-To: Lancair Mailing List Subject: Re: How Not to Do 1st Runup Content-Type: multipart/alternative; boundary="------------040101060509090503070402" This is a multi-part message in MIME format. --------------040101060509090503070402 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit As Marv said, The IV DOES have mechanical down locks on the mains. It is also possible, even easy, to rig the main gear so the locks don't engage. When the cylinder is retracted there is a little play between "Lock" and "Stop". I rigged my plane by adjusting the rod to rack thread so that the piston was in the middle of the lock to stop play when the airplane was sitting on the mains and the hydraulic pressure was zero, the same condition where the stop would be needed. If the rack is adjusted too short the lock will never engage. Regards Brent Regan --------------040101060509090503070402 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit As Marv said, The IV DOES have mechanical down locks on the mains. It is also possible, even easy, to rig the main gear so the locks don't engage. When the cylinder is retracted there is a little play between "Lock" and "Stop". I rigged my plane by adjusting the rod to rack thread so that the piston was in the middle of the lock to stop play when the airplane was sitting on the mains and the hydraulic pressure was zero, the same condition where the stop would be needed. If the rack is adjusted too short the lock will never engage.

Regards
Brent Regan
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