X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-ma04.mx.aol.com ([64.12.206.42] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTP id 5082261 for flyrotary@lancaironline.net; Thu, 04 Aug 2011 18:53:51 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.206.42; envelope-from=Bktrub@aol.com Received: from imo-da02.mx.aol.com (imo-da02.mx.aol.com [205.188.169.200]) by imr-ma04.mx.aol.com (8.14.1/8.14.1) with ESMTP id p74Mr5up024033 for ; Thu, 4 Aug 2011 18:53:05 -0400 Received: from Bktrub@aol.com by imo-da02.mx.aol.com (mail_out_v42.9.) id q.101d.88a6d04 (55719) for ; Thu, 4 Aug 2011 18:53:00 -0400 (EDT) Received: from smtprly-me01.mx.aol.com (smtprly-me01.mx.aol.com [64.12.95.102]) by cia-md02.mx.aol.com (v129.10) with ESMTP id MAILCIAMD022-b2b34e3b22cac3; Thu, 04 Aug 2011 18:53:00 -0400 Received: from web-mmc-d06 (web-mmc-d06.sim.aol.com [205.188.103.96]) by smtprly-me01.mx.aol.com (v129.10) with ESMTP id MAILSMTPRLYME015-b2b34e3b22cac3; Thu, 04 Aug 2011 18:52:58 -0400 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: Water pump pulley departed in-flight Date: Thu, 04 Aug 2011 18:52:58 -0400 X-AOL-IP: 50.46.146.205 In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: bktrub@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8CE211063BE2204_1784_4ACB0_web-mmc-d06.sysops.aol.com" X-Mailer: AOL Webmail 34007-STANDARD Received: from 50.46.146.205 by web-mmc-d06.sysops.aol.com (205.188.103.96) with HTTP (WebMailUI); Thu, 04 Aug 2011 18:52:58 -0400 Message-Id: <8CE211063B6FDE1-1784-19CD7@web-mmc-d06.sysops.aol.com> X-Spam-Flag:NO X-AOL-SENDER: Bktrub@aol.com ----------MB_8CE211063BE2204_1784_4ACB0_web-mmc-d06.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" So the bolts backed out? I am using SS allen heads bolts and they are safe= tly wired. I also have a serpentine belt, and the pulley, instead of being= cantilevered, is more like the wheel of a modern car, and the pulley is= run off of the smooth side of the serpentine belt. But, I only have one= belt running the alternator and water pump. Brian Trubee -----Original Message----- From: Ben Schneider To: Rotary motors in aircraft Sent: Thu, Aug 4, 2011 5:14 am Subject: [FlyRotary] Re: Water pump pulley departed in-flight Glad to hear it turned out well Jeff. Was there any other damage inside th= e cowl from the pulley projectile? Do you have a Mazda manual for that en= gine, and does it list a torque spec for those bolts? Looks as though the= holes are elongated fairly severely, wonder how long it had been loose.= How many hours were on the engine since you last had a wrench on the pull= ey bolts? Keep the group posted. Ben --- On Thu, 8/4/11, Jeff Whaley wrote: From: Jeff Whaley Subject: [FlyRotary] Water pump pulley departed in-flight To: "Rotary motors in aircraft" Date: Thursday, August 4, 2011, 6:59 AM My water pump pulley departed the flange in-flight last night =E2=80=A6 fo= rtunately I was right overhead on cross wind =E2=80=A6 heard a fwaap and= a buzz thought something went through the exhaust or had lost an accessor= y belt; scanned the gauges, water temp and pressure were building fast, I= cut the throttle and headed for 06 =E2=80=A6 checked the voltmeter which= showed +14V so was pretty sure at least one belt was driving the alternat= or =E2=80=A6 made my best landing in a long time then taxied back to the= hangar. Probably should have shutdown the engine right away but didn=E2= =80=99t and it boiled over in front of the hangar. Of course my brother= was there to see this bird fly for the first time; not exactly the demons= tration I wanted. Popped the top cowling and found the water pump pulley= departed but still inside the cowling. The outer belt was turned complete= ly inside-out, which is probably what made the buzz. =20 There are only four small bolts holding that thing in place =E2=80=A6 noti= ced in Haynes pictures this morning that some have four studs and four bol= ts =E2=80=A6 guess the studs are for adding a second pulley? =E2=80=93 but= they would also add extra drive surface area. I think I put those bolts= on with standard loctite but am not 100% certain. Anyway now I=E2=80=99m= wondering if my restrictor plate, loading the pump, may have contributed= to more vibration or is this just coincidence =E2=80=A6=20 Jeff =20 This message, and the documents attached hereto, is intended only for the= addressee and may contain privileged or confidential information. Any una= uthorized disclosure is strictly prohibited. If you have received this mes= sage in error, please notify us immediately so that we may correct our int= ernal records. Please then delete the original message. Thank you. -----Inline Attachment Follows----- -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List= .html ----------MB_8CE211063BE2204_1784_4ACB0_web-mmc-d06.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"
So the bolts backed out? I am using SS allen heads bolts and they are= safetly wired. I also have a serpentine belt, and the pulley, instead of= being cantilevered, is more like the wheel of a modern car, and the pulle= y is run off of the smooth side of the serpentine belt. But, I only have= one belt running the alternator and water pump.
 
Brian Trubee



-----Original Message-----
From: Ben Schneider <plumberben@yahoo.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thu, Aug 4, 2011 5:14 am
Subject: [FlyRotary] Re: Water pump pulley departed in-flight

Glad to hear it turned out well Jeff. Was there any other= damage inside the cowl from the pulley projectile?  Do you have a Ma= zda manual for that engine, and does it list a torque spec for those bolts= ? Looks as though the holes are elongated fairly severely, wonder how long= it had been loose. How many hours were on the engine since you last had= a wrench on the pulley bolts?

Keep the group posted.

Ben

--- On Thu, 8/4/11, Jeff Whaley <jwhaley@datacast.com> wrote:

From: Jeff Whaley <jwhaley@data= cast.com>
Subject: [FlyRotary] Water pump pulley departed in-flight
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Date: Thursday, August 4, 2011, 6:59 AM

My water= pump pulley departed the flange in-flight last night =E2=80=A6 fortunatel= y I was right overhead on cross wind =E2=80=A6 heard a fwaap and a buzz th= ought something went through the exhaust or had lost an accessory belt; scanned the gauges, water temp and press= ure were building fast, I cut the throttle and headed for 06 =E2=80=A6 checked the voltmeter= which showed +14V so was pretty sure at least one belt was driving the al= ternator =E2=80=A6 = made my best landing in a long time then taxied back to the hangar. Probab= ly should have shutdown the engine right away but didn=E2=80=99t and it bo= iled over in front of the hangar.  Of course my brother was there to= see this bird fly for the first time; not exactly the demonstration I wan= ted.  Popped the top cowling and found the water pump pulley departed= but still inside the cowling. The outer belt was turned completely inside-out, which is prob= ably what made the buzz.
 
There are only four small bolts holding that thing in place =E2= =80=A6 noticed in Haynes pictures this morning that some have four studs= and four bolts =E2=80=A6 guess the studs are for adding a second pulley? =E2=80=93 but they= would also add extra drive surface area.  I think I put those bolts on with standard lo= ctite but am not 100% certain.  Anyway now I=E2=80=99m wondering if= my restrictor plate, loading the pump, may have contributed to more vibra= tion or is this just coincidence =E2=80=A6
Jeff
 

This message, and the documents= attached hereto, is intended only for the addressee and may contain privi= leged or confidential information. Any unauthorized disclosure is strictly= prohibited. If you have received this message in error, please notify us= immediately so that we may correct our internal records. Please then dele= te the original message. Thank you.

-----Inline Attachment Follows-----

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