X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 18 Apr 2012 13:01:28 -0400 Message-ID: X-Original-Return-Path: Received: from mail-ob0-f180.google.com ([209.85.214.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.4) with ESMTPS id 5487185 for lml@lancaironline.net; Wed, 18 Apr 2012 11:46:37 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.180; envelope-from=pjdmiller@gmail.com Received: by obbwc20 with SMTP id wc20so7066387obb.25 for ; Wed, 18 Apr 2012 08:46:02 -0700 (PDT) Received: by 10.182.159.41 with SMTP id wz9mr3640316obb.69.1334763962279; Wed, 18 Apr 2012 08:46:02 -0700 (PDT) X-Original-Return-Path: Received: from [192.168.15.100] ([67.8.30.163]) by mx.google.com with ESMTPS id w4sm21922377oeg.12.2012.04.18.08.46.00 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 18 Apr 2012 08:46:01 -0700 (PDT) Subject: Re: [LML] Re: Excessive down hydraulic pressure References: From: Paul Miller Content-Type: multipart/alternative; boundary=Apple-Mail-6--25518810 X-Mailer: iPad Mail (8L1) In-Reply-To: X-Original-Message-Id: <945088DF-683B-48A5-8EE1-39D569CDCCEA@gmail.com> X-Original-Date: Wed, 18 Apr 2012 11:46:03 -0400 X-Original-To: Lancair Mailing List Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (iPad Mail 8L1) --Apple-Mail-6--25518810 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Adam, great video. I hate to add this comment but I believe you have an old= geared starter, perhaps an iskra or other geared starter? Maybe batteries w= ere not charged too. But, the starter is spinning and the prop is going bac= kwards for a short duration during start in your video. In my non-expert op= inion you are a candidate for a new starter adapter. That spinning is the s= pring slipping on the adapter shaft. It will get worse with time. If it's= under warranty consider getting it swapped and putting in a better starter.= I have great starts with the old tcm boat anchor and another legacy now ha= s the newer skytek with a rebuilt starter adapter and that is working well. = I'll send you a video of how it looks after the change. Let me know if yo= u need more data. Paul Legacy=20 Spruce Creek fl > =20 > http://www.youtube.com/watch?v=3Dfo1qnhBuqS8 > The attached JPG file shows the up and down hydraulic pressure readings th= roughout the flight. The x-axis is time, with the flight beginning at 20:32Z= and ending at 21:12Z. You can see the gear retraction tests beginning aroun= d 20:43 and 3500' altitude. Notice that after the last test the down pressur= e remains around 500psi for about 90 seconds even though the gear is retract= ed. The up pressure fluctuates a bit then the down pressure drops to near=20= >=20 --Apple-Mail-6--25518810 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
Adam, great video.  I hate to add t= his comment but I believe you have an old geared starter, perhaps an iskra o= r other geared starter?  Maybe batteries were not charged too.  Bu= t, the starter is spinning and the prop is going backwards for a short durat= ion during start in your video.  In my non-expert opinion you are a can= didate for a new starter adapter.  That spinning is the spring slipping= on the adapter shaft.  It will get worse with time.   If it's und= er warranty consider getting it swapped and putting in a better starter. &nb= sp;I have great starts with the old tcm boat anchor and another legacy now h= as the newer skytek with a rebuilt starter adapter and that is working well.=   I'll send you a video of how it looks after the change.  Let me= know if you need more data.

Paul
Legacy 
Sp= ruce Creek fl



 
The attached JPG file shows the up and down hydraulic pressure readings= throughout the flight. The x-axis is time, with the flight beginning at 20:= 32Z and ending at 21:12Z. You can see the gear retraction tests beginning ar= ound 20:43 and 3500' altitude. Notice that after the last test the down pres= sure remains around 500psi for about 90 seconds even though the gear is retr= acted. The up pressure fluctuates a bit then the down pressure drops to near=  

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