X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost05.isp.att.net ([207.115.11.55] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3872752 for flyrotary@lancaironline.net; Fri, 02 Oct 2009 20:53:00 -0400 Received-SPF: none receiver=logan.com; client-ip=207.115.11.55; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-157-211-223.mco.bellsouth.net[70.157.211.223]) by isp.att.net (frfwmhc05) with SMTP id <20091003005222H05005mmhme>; Sat, 3 Oct 2009 00:52:22 +0000 X-Originating-IP: [70.157.211.223] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Good, bad news...too much oil pressure somewhere Date: Fri, 2 Oct 2009 20:52:31 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0027_01CA43A2.42BDFA30" X-Mailer: Microsoft Office Outlook 11 Thread-Index: AcpDrtDNNZpGkY/2T8+I551qLvwQ0AAEwonw X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18005 This is a multi-part message in MIME format. ------=_NextPart_000_0027_01CA43A2.42BDFA30 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Chris, You didn't say which line burst. I recommend you test your oil pressure sender. Hook it up to your air compressor hose and compare the two readings. You should be able to do this close to the engine so you can read it. Check the hose and fittings after the filter (all of them) for some kind of blockage. If the sender is ok, you may have a blockage between the filter and the sender. Could be the exit from the filter adapter. Did you make up your own hoses and install the ends? If you didn't use a mandrel, it is possible to get a sliver of the inside of the hose that could come up and partially block the hose. Like Al, I don't see how this could happen. Maybe Lynn will know. Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Chris Barber Sent: Friday, October 02, 2009 6:22 PM To: Rotary motors in aircraft Subject: [FlyRotary] Good, bad news...too much oil pressure somewhere As loyal readers may recall I have been concerned about oil seeping/leaking out from around my oil filter seal on my remotlely mounted oil filter. I have replaced the remote mount and tried 4 different K&N filters and an STP filter to no avail. Well, in the tradition of test it til it breaks, after focusing on some other tasks today, I cranked up the engine one last time to see if my "task" had screwed anyting up. Since is was a coooool 85 degress and my oil temps were showing about low after start up, I figured I would go WOT and see how long it would take to get to 210....uh, pretty quick for those curious (even though I can idle at 1400 - 1700 dang near all day). I looked to the engine and could see the small drip marks of the oil leak, continued at full throttle for a few more seconds and shut down. I got out of the plane and saw a huge puddle of oil where the small amount had been. Upon closer examination, oil was all over the bottom of the engine and I had a nicely oiled prop (pusher Velocity). Almost immediatly I noticed one of my heavy duty Aeroquip oil lines had burst. Hmmmmm, the Oil Pressure reading never went over 75 and was around 35 when idle (as a matter of fact, at idle, it is usualy around 30). I belive these reading to be in the normal ranges. Anyway, I have plans tonight so I had to push the bird back into the hangar and think about things. As suspected, the seeping remote mount was a mere symptom. Now to determine what was causing the apparantly high pressure near the remote mount and the burst hose. The lines are fed to the mount correctly, but I shall check again. Y'all's thougts are appreciated and sought. On a better note, after fighting some electrical issues, esp with my coils, I kept getting inconsistant reading on the multimeter when using the Mazda coil harness. I finely gave in and cut it to pieces and wired it direclty using just the connectors into the coil and eleminating the plut into the old harnes by directly soldering the wires. This seems to have solved the problem. It is great to turn off secondary, primary/coils, injectors in various patterns and the engine still run as expected. Now, I am convinced that the rotary can run, if poorly, on ONE coil as it may do if someone forgot to reattach the leading coil spark plug wire on rotar one......don't ask how I know . Well I am off to a fine dining experience...or so I hope. Great to comtemplate tomorrows activity. Thanks for your attention. All the best, Chris Barber Houston Warning: This e-mail transmission, and any documents, files or previous e-mails attached to it, may contain confidential information that is legally privileged. If you are not the intended recipient or the person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error, please immediately notify us by telephone at 713-662-8132 and destroy the original transmission and its attachments without reading them. Thank you. ------=_NextPart_000_0027_01CA43A2.42BDFA30 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Chris,

You didn’t say which line burst.  I recommend you = test your oil pressure sender.  Hook it up to your air compressor hose and = compare the two readings.  You should be able to do this close to the = engine so you can read it.

Check the hose and fittings after the filter (all of them) for = some kind of blockage.  If the sender is ok, you may have a blockage = between the filter and the sender.  Could be the exit from the filter = adapter.

Did you make up your own hoses and install the ends?  If = you didn’t use a mandrel, it is possible to get a sliver of the inside of the hose = that could come up and partially block the hose.

Like Al, I don’t see how this could happen.  Maybe = Lynn will = know.

 

Bill B

 

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Chris = Barber
Sent: Friday, October 02, = 2009 6:22 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] = Good, bad news...too much oil pressure somewhere

As loyal readers may recall I = have been concerned about oil seeping/leaking out from around my oil filter seal = on my remotlely mounted oil filter.  I have replaced the remote mount and = tried 4 different K&N filters and an STP filter to no = avail.

 

Well, in the tradition of test it til it breaks, = after focusing on some other tasks today, I cranked up the engine one last = time to see if my "task" had screwed anyting up.  Since is was a = coooool 85 degress and my oil temps were showing about low after start up, I = figured I would go WOT and see how long it would take to get to 210....uh, pretty = quick for those curious (even though I can idle at 1400 - 1700 dang near all day).  I looked to the engine and could see the small drip marks of = the oil leak, continued at full throttle for a few more seconds and shut down.  I got out of the plane and saw a huge puddle of oil where = the small amount had been.  Upon closer examination, oil was all over the = bottom of the engine and I had a nicely oiled prop (pusher Velocity).  Almost immediatly I noticed one of my heavy duty Aeroquip oil lines had = burst.  Hmmmmm, the Oil Pressure reading never went over 75 and was around 35 = when idle (as a matter of fact, at idle, it is usualy around 30).  = I belive these reading to be in the normal = ranges.

 

Anyway, I have plans tonight so I had to = push the bird back into the hangar and think about things.  As suspected, = the seeping remote mount was a mere symptom.  Now to determine = what was causing the apparantly high pressure near the remote mount and the burst hose.  The lines are fed to the mount correctly, but I shall check again.  Y'all's thougts are appreciated and = sought.

 

On a better note, after fighting some electrical = issues, esp with my coils, I kept getting inconsistant reading on the multimeter when using the Mazda coil harness.  I finely gave = in and cut it to pieces and wired it direclty using just the = connectors into the coil and eleminating the plut into the old harnes by = directly soldering the wires.  This seems to have solved the problem.  = It is great to turn off secondary, primary/coils, injectors in = various patterns and the engine still run as expected.  Now, I am convinced that the rotary can run, if poorly, on ONE = coil as  it may do if someone forgot to reattach the leading coil spark plug wire = on rotar one......don't ask how I know <g>.

 

Well I am off to a fine dining experience...or so I hope.  = Great to comtemplate tomorrows activity. 

 

Thanks for your attention.

 

All the best,

 

Chris = Barber

Houston


Warning: This e-mail transmission, and any documents, files or previous = e-mails attached to it, may contain confidential information that is legally privileged. If you are not the intended recipient or the person = responsible for delivering it to the intended recipient, you are hereby notified that = any disclosure, copying, distribution or use of any of the information = contained in or attached to this transmission is STRICTLY PROHIBITED. If you have = received this transmission in error, please immediately notify us by telephone at 713-662-8132 and destroy the original transmission and its attachments = without reading them. Thank you.

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