X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 17 Jun 2011 12:45:29 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-curtail.atl.sa.earthlink.net ([209.86.89.64] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTP id 5022964 for lml@lancaironline.net; Thu, 16 Jun 2011 18:15:03 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.64; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=YRZSs21EifsEdkzoRUjOxF/6klkqPmZNPS2f1jTBJ+6vt+RKYWgX/5IjHpzJGJRM; h=Received:From:Mime-Version:Content-Type:Subject:Date:In-Reply-To:To:References:Message-Id:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [12.181.94.130] (helo=[10.1.2.59]) by elasmtp-curtail.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1QXKpX-0005s6-DE for lml@lancaironline.net; Thu, 16 Jun 2011 18:14:27 -0400 From: Colyn Case Mime-Version: 1.0 (Apple Message framework v1082) Content-Type: multipart/alternative; boundary=Apple-Mail-643--757215389 Subject: Re: [LML] Re: Stall Speeds, Wing Cuffs, Vortex Generators for Lancair 4p X-Original-Date: Thu, 16 Jun 2011 18:14:26 -0400 In-Reply-To: X-Original-To: "Lancair Mailing List" References: X-Original-Message-Id: X-Mailer: Apple Mail (2.1082) X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da9409b74f405981842631e11054ec795183a350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 12.181.94.130 --Apple-Mail-643--757215389 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Hey Terrence, there was an article about AOA in aopa pilot this month. = Your chance for a big letter to the editor... Colyn On Jun 16, 2011, at 11:16 AM, Terrence O'Neill wrote: > John, >=20 > Respectfully suggest an AOA, and stop sweating the stall. > Terrence O'Neill > N211AL=20 > L235/320 >=20 >=20 > On Jun 16, 2011, at 6:24 AM, John Hafen wrote: >=20 >> Ronald: >>=20 >> My IVP stalls clean at 76 kts clean, and 65 kts in landing = configuration. But I never get that slow. Or even close. I fly = downwind at 130, a very rounded base / transition to final at 120, and = approach at 110 on final, slowing down to 100 over the fence. >>=20 >> One of the things my bird did when I was doing the initial testing = was a 90 degree snap roll to the right when I stalled it (And I mean = Snap!). =46rom there, it's pretty easy to get into a spin. >>=20 >> I fly a 1500 foot pattern for a little extra safety, knowing that any = stall even at that altitude would be un-recoverable. >>=20 >> Eventually, I had the wings "indexed," and ended up lowering the = trailing edge of the right wing slightly perhaps 3/16th of an inch. It = now stalls straight ahead and I think my stall speeds were lowered = slightly because of that exercise. But it is still a squirrely stall = that seems very unnatural compared to other planes I've flown. it does = this weird yaw thing, maybe because of the small tail. >>=20 >> A 4P is not your father's Olsmobile, or a Cessna. I's not a good = plane to go slow and low for sight seeing. And 4P's are all different. = Not all of them are square. You're smart to test it out before you buy = to find a good one. >>=20 >> All of this said, I LOVE my plane. I love that it is fast. You just = have to know the machine to stay safe. >>=20 >> John Hafen >> IVP 413AJ 300 hours >>=20 >> On Jun 15, 2011, at 5:24 PM, RONALD STEVENS wrote: >>=20 >> I know this is a sensitive subject but I just got a flight test = review back from a plane that I am thinking to buy and was a bit = surprised about the stall speeds that were in there. >>=20 >> What kind of stall speed (clean/50%/Dirty) do you have in your 4p? = And were you ever thinking of having it improved by Vortex Generators or = Wing cuff? >>=20 >> Thanks -- Ronald >>=20 >=20 --Apple-Mail-643--757215389 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii Hey = Terrence, there was an article about AOA in aopa pilot this month. =   Your chance for a big letter to the = editor...

Colyn

On Jun 16, = 2011, at 11:16 AM, Terrence O'Neill wrote:

Ronald:

My = IVP stalls clean at 76 kts clean, and 65 kts in landing configuration. =  But I never get that slow.  Or even close.  I fly = downwind at 130, a very rounded base / transition to final at 120, and = approach at 110 on final, slowing down to 100 over the = fence.

One of the things my bird did when I was doing = the initial testing was a 90 degree snap roll to the right when I = stalled it (And I mean Snap!).  =46rom there, it's pretty easy to = get into a spin.

I fly a 1500 foot pattern for = a little extra safety, knowing that any stall even at that altitude = would be un-recoverable.

Eventually, I had the = wings "indexed," and ended up lowering the trailing edge of the right = wing slightly perhaps 3/16th of an inch.  It now stalls straight = ahead and I think my stall speeds were lowered slightly because of that = exercise.  But it is still a squirrely stall that seems very = unnatural compared to other planes I've flown.  it does this weird = yaw thing, maybe because of the small tail.

A = 4P is not your father's Olsmobile, or a Cessna.  I's not a good = plane to go slow and low for sight seeing.   And 4P's are all = different.  Not all of them are square.  You're smart to test = it out before you buy to find a good one.

All = of this said, I LOVE my plane.  I love that it is fast.  You = just have to know the machine to stay safe.

John = Hafen
IVP 413AJ 300 hours

On Jun 15, = 2011, at 5:24 PM, RONALD STEVENS wrote: