X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-yx0-f180.google.com ([209.85.213.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTPS id 5072001 for flyrotary@lancaironline.net; Tue, 02 Aug 2011 17:59:38 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.213.180; envelope-from=samuel.treffinger@gmail.com Received: by yxk30 with SMTP id 30so229934yxk.25 for ; Tue, 02 Aug 2011 14:59:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=references:in-reply-to:mime-version:content-type:message-id :content-transfer-encoding:cc:x-mailer:from:subject:date:to; bh=VcDcQ3MADJ3y5e6DJ5JJ8pbhL/coavmLI2zXLxcOYqs=; b=xNGQ3GVxAqUsLTzfGzhznzFK+jv/X76UZ/Zwsc2XEaBpBRMhR9Ak9kFHirNL9u+lQ9 Suq5XQpjpEfI8tpSyPjPfAhZJdhrTPE/uQu1NUczBS8hJAMVzKEj0P4uyu48YKVnYO8b 4jDLD5V3X9AeZ+uwpEzs/+9oJcX1+rDE164V8= Received: by 10.42.133.130 with SMTP id h2mr4411459ict.101.1312322342367; Tue, 02 Aug 2011 14:59:02 -0700 (PDT) Return-Path: Received: from [192.168.2.4] ([98.156.3.38]) by mx.google.com with ESMTPS id h6sm215957icp.16.2011.08.02.14.59.00 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 02 Aug 2011 14:59:01 -0700 (PDT) References: In-Reply-To: Mime-Version: 1.0 (iPhone Mail 8L1) Content-Type: multipart/alternative; boundary=Apple-Mail-7--992309257 Message-Id: <8FC298D9-C737-48DD-8940-0C43396ACAC6@gmail.com> Content-Transfer-Encoding: 7bit Cc: Rotary motors in aircraft X-Mailer: iPhone Mail (8L1) From: Samuel Treffinger Subject: Re: [FlyRotary] Re: PSRU Date: Tue, 2 Aug 2011 16:58:55 -0500 To: Rotary motors in aircraft --Apple-Mail-7--992309257 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Do you know of any online articles showing this to be true??? Sent from my iPhone On Aug 2, 2011, at 4:44 PM, Pat Panzera w= rote: > It's not just stalled, portions of it is actually creating negative thrust= and the portions that are not contributing to thrust are creating drag on t= he engine.=20 >=20 > On Mon, Aug 1, 2011 at 4:57 AM, Tracy wrote: > No negative effects that I know of. I used one for awhile on my RV-4 but= was not happy with it's efficiency at high speed. Worked great for takeof= f & climb but area near hub was stalled and draggy at cruise & high speed. >=20 > Works better on canards because that area is in turbulent air anyway. >=20 > Tracy >=20 >=20 > On Mon, Aug 1, 2011 at 1:48 AM, Samuel Treffinger wrote: > Tracy, do you know of any negative side affects of using a IVO magnum infl= ight adjustable prop with your psru?? I think John Slade has that configurat= ion, but I was wondering if you reccommended it, or reccommended against it.= > =20 > Sam >=20 >=20 --Apple-Mail-7--992309257 Content-Transfer-Encoding: 7bit Content-Type: text/html; charset=utf-8
Do you know of any online articles showing this to be true???

Sent from my iPhone

On Aug 2, 2011, at 4:44 PM, Pat Panzera <editor.contactmagazine@gmail.com> wrote:

It's not just stalled, portions of it is actually creating negative thrust and the portions that are not contributing to thrust are creating drag on the engine. 

On Mon, Aug 1, 2011 at 4:57 AM, Tracy <rwstracy@gmail.com> wrote:
No negative effects that I know of.   I used one for awhile on my RV-4 but was not happy with it's efficiency at high speed.   Worked great for takeoff & climb but area near hub was stalled and draggy at cruise & high speed.

Works better on canards because that area is in turbulent air anyway.

Tracy


On Mon, Aug 1, 2011 at 1:48 AM, Samuel Treffinger <samuel.treffinger@gmail.com> wrote:
Tracy, do you know of any negative side affects of using a IVO magnum inflight adjustable prop with your psru?? I think John Slade has that configuration, but I was wondering if you reccommended it, or reccommended against it.
 
Sam


--Apple-Mail-7--992309257--