X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 16 Jun 2011 07:24:40 -0400 Message-ID: X-Original-Return-Path: Received: from qmta12.westchester.pa.mail.comcast.net ([76.96.59.227] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTP id 5021845 for lml@lancaironline.net; Wed, 15 Jun 2011 21:30:10 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.59.227; envelope-from=j.hafen@comcast.net Received: from omta23.westchester.pa.mail.comcast.net ([76.96.62.74]) by qmta12.westchester.pa.mail.comcast.net with comcast id wRTg1g0051c6gX85CRVbx1; Thu, 16 Jun 2011 01:29:35 +0000 Received: from [192.168.128.152] ([71.39.4.91]) by omta23.westchester.pa.mail.comcast.net with comcast id wRVN1g00Q1xpSLv3jRVSxt; Thu, 16 Jun 2011 01:29:33 +0000 From: John Hafen Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: multipart/alternative; boundary=Apple-Mail-105--831920974 Subject: Re: [LML] Stall Speeds, Wing Cuffs, Vortex Generators for Lancair 4p X-Original-Date: Wed, 15 Jun 2011 18:29:20 -0700 In-Reply-To: X-Original-To: "Lancair Mailing List" References: X-Original-Message-Id: X-Mailer: Apple Mail (2.1084) --Apple-Mail-105--831920974 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii 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: 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. 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? Thanks -- Ronald --Apple-Mail-105--831920974 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii

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: