X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 08 Jan 2013 17:08:55 -0500 Message-ID: X-Original-Return-Path: Received: from mta11.charter.net ([216.33.127.80] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTP id 6001548 for lml@lancaironline.net; Tue, 08 Jan 2013 15:36:53 -0500 Received-SPF: pass receiver=logan.com; client-ip=216.33.127.80; envelope-from=troneill@charter.net Received: from imp09 ([10.20.200.9]) by mta11.charter.net (InterMail vM.8.01.05.09 201-2260-151-124-20120717) with ESMTP id <20130108203618.SLEE6169.mta11.charter.net@imp09> for ; Tue, 8 Jan 2013 15:36:18 -0500 Received: from [192.168.1.100] ([75.132.241.174]) by imp09 with smtp.charter.net id lYcJ1k0053mUFT705YcJ2w; Tue, 08 Jan 2013 15:36:18 -0500 X-Authority-Analysis: v=2.0 cv=Cp/n6QED c=1 sm=1 a=VxlS/kh5Y2KhHY/Xui1ATg==:17 a=aQQgLRiEwXMA:10 a=yUnIBFQkZM0A:10 a=hOpmn2quAAAA:8 a=bSqZnbdTXLAA:10 a=ndVRne3UAAAA:8 a=5FIZSGrRAAAA:8 a=fv50BRHzAAAA:8 a=Ia-xEzejAAAA:8 a=n-Gte3xOySDqcXM7Z9AA:9 a=pILNOxqGKmIA:10 a=ORsapS7FR98A:10 a=EzXvWhQp4_cA:10 a=-xpPnlyquCUHdOac_DMA:9 a=_W_S_7VecoQA:10 a=frz4AuCg-hUA:10 a=QMtLx_y13XDgiVMu:21 a=VxlS/kh5Y2KhHY/Xui1ATg==:117 From: Terrence O'Neill Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: multipart/alternative; boundary=Apple-Mail-366--734427592 Subject: Re: [LML] Re: parachutes, gear speeds X-Original-Date: Tue, 8 Jan 2013 14:36:17 -0600 In-Reply-To: X-Original-To: "Lancair Mailing List" References: X-Original-Message-Id: <13BE5C12-F92C-4F9F-AE79-80829EB67202@charter.net> X-Mailer: Apple Mail (2.1085) --Apple-Mail-366--734427592 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 Thanks, Chris. I just checked my doors... originals (Kit #11), with a = helmet camera under the cowl, and they stay closed. Glad to hear that it = is probably OK to drop the gear at high speed in an emergency and only = lose the doors. Chuck Tucker (in my book) told me he flew all the YB-49 = stall tests and a spin recovery up to about 300 mph with the gear always = down, to keep the speed down during recovery...and showed me pics (from = a P-61) taken during the spin recovery, showing the extended gear. Terrence On Jan 8, 2013, at 11:02 AM, Chris Zavatson wrote: > Ed, > Do you have the standard or outback gear? > The standard gear has a distinct advantage with respect to speed = limitations.=20 > The original Outback Gear added a lot of surface area and a lot of = camber to the doors. Also, the two-piece design cantilevered much of = the area of the outboard door out beyond the attach point. This door is = the week link. A handful have failed in flight and departed the = aircraft. The outboard doors flex quite a bit under aerodynamic loads. > On the other hand, I found the the outback inner gear door can = withstand the full 200 KTAS cruise speed - even when detached from the = actuator. I had a rod end bearing fail back at about 150 hours. I was = pleasantly surprised to see the door remained on the aircraft. -The rod = end bearings have been replaced with stronger units made of a better = alloy- > Back to door speeds..... > I am now flying with a three-piece outback gear door set-up. Like = with the standard gear the center door is attached to a new trailing = link on the main gear. These door effectively have no speed limit. The = only caution then becomes the gusto with which the gear locks into = place. I have gone as high as 160 KIAS for extension speed.=20 > The impetus for these doors was not to increase gear speeds, but to = keep them from flexing open in flight and turning into air brakes. =20 > http://www.n91cz.com/Outback-Gear/Outback-source.pdf > =20 > =20 > Chris Zavatson > N91CZ, 1400 hrs > 360std > http://www.n91cz.net/ >=20 > From: Ed Gray > To: lml@lancaironline.net=20 > Sent: Tuesday, January 8, 2013 3:20 AM > Subject: [LML] parachutes, gear speeds >=20 > On recent trip in my new (50 hr.) 360, a misadjustment prevented my = left inner gear door closing. I elected to continue and gradually = increased speed, seemed the faster I went the smoother it got. Finished = trip (900 mi.) at 200 mph. No apparent damage to the door. Query=97at = what speeds do gear doors depart? I have used 135 mph as max gear down = speed=97Now thinking 160 might be ok if needed to get down quick. = Anyone know the answer? > =20 > Getting out of front hinge canopy with a parachute? I haven=92t tried = it, but my guess is you would need to get inverted and slow way down to = push it open. If rides about 2 inches open if opened in flight. Don=92t = try to close it in flight unless you have a good pull strap and on = autopilot. > =20 > Finally, has anyone gotten a Dynon Skyview autopilot tuned for = vertical hold without hunting? If so please send me your settings. Ed = Gray Dallas >=20 >=20 --Apple-Mail-366--734427592 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252
Ed,
Do you = have the standard or outback gear?
The standard = gear has a distinct advantage with respect to speed limitations.  =
The original Outback Gear added a lot of surface = area and a lot of camber to the doors.  Also, the two-piece design = cantilevered much of the area of the outboard door out beyond the attach = point.  This door is the week link.  A handful have failed in = flight and departed the aircraft.  The outboard doors flex quite a = bit under aerodynamic loads.
On the other hand, I = found the the outback inner gear door can withstand the full = 200 KTAS cruise speed - even when detached from the actuator.  = I had a rod end bearing fail back at about 150 hours.  I was = pleasantly surprised to see the door remained on the aircraft.  -The rod = end bearings have been replaced with stronger units made of a better = alloy-
Back to door = speeds.....
I am now flying with a three-piece = outback gear door set-up.  Like with the standard gear the = center door is attached to a new trailing link on the main = gear.  These door effectively have no speed limit.  The only = caution then becomes the gusto with which the gear locks into = place.  I have gone as high as 160 KIAS for extension = speed. 
The impetus for these doors was not = to increase gear speeds, but to keep them from flexing open in = flight and turning into air = brakes.  
 
 
Chris = Zavatson
N91CZ, 1400 = hrs
360std
=
= From: Ed Gray <egraylaw@swbell.net>
= To: lml@lancaironline.net
= Sent: Tuesday, January = 8, 2013 3:20 AM
Subject: [LML] parachutes, gear speeds
 =

On = recent trip in my new (50 hr.) 360, a misadjustment prevented my left = inner gear door closing.  I elected to continue and gradually = increased speed, seemed the faster I went the smoother it got.  = Finished trip (900 mi.) at 200 mph.  No apparent damage to the = door.  Query=97at what speeds do gear doors depart?  I have = used 135 mph as max gear down speed=97Now thinking 160 might be ok if = needed to get down quick.  Anyone know the answer?
=  
Getting out of front hinge canopy with a = parachute?  I haven=92t tried it, but my guess is you would need to = get inverted and slow way down to push it open.  If rides about 2 = inches open if opened in flight.  Don=92t try to close it in flight unless you have a good = pull strap and on autopilot.
=  
Finally, has anyone gotten a Dynon Skyview = autopilot tuned for vertical hold without hunting?  If so please = send me your settings.  Ed Gray    = Dallas


=

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