X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf19aec.mail.bellsouth.net ([205.152.59.67] verified) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTP id 2084333 for flyrotary@lancaironline.net; Mon, 04 Jun 2007 23:03:53 -0400 Received-SPF: none receiver=logan.com; client-ip=205.152.59.67; envelope-from=rusty@radrotary.com Received: from ibm60aec.bellsouth.net ([65.6.194.9]) by imf19aec.mail.bellsouth.net with ESMTP id <20070605030317.ZBUY25752.imf19aec.mail.bellsouth.net@ibm60aec.bellsouth.net> for ; Mon, 4 Jun 2007 23:03:17 -0400 Received: from rd ([65.6.194.9]) by ibm60aec.bellsouth.net with ESMTP id <20070605030316.UHJI1030.ibm60aec.bellsouth.net@rd> for ; Mon, 4 Jun 2007 23:03:16 -0400 From: "Russell Duffy" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Single rotor video Date: Mon, 4 Jun 2007 22:03:16 -0500 Message-ID: <00fc01c7a71e$102fbd10$6e01a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00FD_01C7A6F4.2759B510" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6822 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 Importance: Normal Thread-Index: AcenFTDnemYxX0ciSF+DxzBZuzjSHwAB//+A In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_00FD_01C7A6F4.2759B510 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable What a great video. I ran it in slow motion. At one point I had = impression that blade had flexed far enough to hit trailer! I would be very = concerned for blade flex unless I had clear proof it has no long term effect. =20 =20 Hi Al, =20 Can't help but be impressed by the amount of movement :-) I also sent = the link to Warp Drive to see if they had any comment, but I'm not sure if they'll reply. The Warp drive might survive this, but I don't think = I'll be happy about it unless it can be toned down a bit. =20 =20 I was curious if video from in front would show the same effects. If it doesn't, possibly cause is related to fore/aft blade support. Not = likely, but worth checking. =20 =20 I haven't videoed it from the front or rear, but I've watched it myself. = I can't see any funny business unless I'm directly to the side of the = prop. =20 =20 FWIW, I did the break-in on my Rotax 582 today, and it has a 60" 3 blade Warp Drive prop. I didn't see any fore and aft blade movement at all = when at a steady speed, though I didn't video it to see the effect of speed changes. =20 =20 Rusty =20 ------=_NextPart_000_00FD_01C7A6F4.2759B510 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message
What a great video. I ran it in slow motion. At one point I had = impression=20 that blade had flexed far enough to hit trailer! I would be very = concerned for=20 blade flex unless I had clear proof it has no long term = effect.  
 
Hi=20 Al,
 
Can't help=20 but be impressed by the amount of movement :-)  I also sent the = link to=20 Warp Drive to see if they had any comment, but I'm not sure if they'll=20 reply.  The Warp drive might survive this, but I don't think = I'll be=20 happy about it unless it can be toned down a bit. =20  
 
I was curious if video from in front would show the same = effects. If=20 it doesn't, possibly cause is related to fore/aft blade support. = Not=20 likely, but worth checking.  
 
I haven't=20 videoed it from the front or rear, but I've watched it myself.  I = can't see=20 any funny business unless I'm directly to the side of the=20 prop.  
 
FWIW, I did=20 the break-in on my Rotax 582 today, and it has a 60" 3 blade Warp Drive=20 prop.  I didn't see any fore and aft blade movement at all = when at a=20 steady speed, though I didn't video it to see the effect of speed=20 changes.  
 
Rusty
   
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