Return-Path: Received: from [24.25.9.103] (HELO ms-smtp-04-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 828435 for flyrotary@lancaironline.net; Tue, 29 Mar 2005 07:43:32 -0500 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.103; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-185-127.carolina.rr.com [24.74.185.127]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id j2TCghL5015900 for ; Tue, 29 Mar 2005 07:42:45 -0500 (EST) Message-ID: <000a01c5345c$cf30e1d0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Oil Flow Date: Tue, 29 Mar 2005 07:42:46 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0007_01C53432.E609D3A0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0007_01C53432.E609D3A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Good Point, Kelly. Yes, the key is easy to push out of its slot when sliding the oil pump = sprocket on the shaft. Most of the time it will fall out and you can = spot it. In my case, it got trapped between the sprocket and oil pump = housing and did not fall out. In later examining the pump, you could = see the impression in the softer aluminum pump housing where the = torquing of the shaft nut had forced the key into the housing. Flew for = 10 hours with just the clamping force of the torque, until a inadvertent = WOT start up on a cool morning with 50 weight oil broke the nuts = clamping force loose. I noticed while taxing to the far end of the runway at Tracy Crooks that = the oil pressure was only 20 psi vs the normal 35-40 psi. Thought it = must surely be a pressure sensor or gauge problem. But, just couldn't = bring myself to take-off, so taxied back and started test. First all the = sensor and gauge. But, all test indicated an internal problem, took = the engine off, and while washing out the oil pan hear a "clink" of = metal in the pan and found the beat-up oil pump shaft key lying there. = So it can happen. Ed A ----- Original Message -----=20 From: Kelly Troyer=20 To: Rotary motors in aircraft=20 Sent: Tuesday, March 29, 2005 4:50 AM Subject: [FlyRotary] Re: Oil Flow Wendell Remember the problem Ed Anderson had.......When oil pump pulley was installed the key was pushed out of the keyway and he was flying for a period of time with just the friction of the taper between the oilpump = shaft=20 and the pulley driveing the pump.......Something to consider...... -- Kelly Troyer=20 Dyke Delta/13B/RD1C/EC2=20 -------------- Original message from "Wendell Voto" = : --------------=20 Subject: [FlyRotary] Re: Oil Flow Got (some) oil flow.=20 Remove the pick-up tube and cleaned off Hylomar. Cut a new gasket = out of some gasket stock I had lying around and installed pick-up tube = without any sealant.=20 Hooked up starter (plugs removed) and spun engine, no joy. Removed = outlet hose and primed pump again. Got oil flow. Reconnected oil line = and left it slightly loose and had oil pressure gauge sender out. = Cranked engine, oil flowed out of pressure sender hole. Let engine set = while bat recharged some. Tried again, no oil.=20 Repeated priming and had oil flow, reconnected line and this time = oil flow was good. Put oil pressure sender on and cranked engine, had = oil flow. Let engine set several minutes, cranked again, had oil flow. = Let set some more, no flow while cranking.=20 Racing beat catalog says to charge the oil line by cranking the = engine without spark plugs installed as I did but got varying results, = sometimes got oil pressure (couldn't measure it - use ohmmeter to see if = sender saw any pressure) and some times I didn't. How fast does the = engine have to go the get oil to suck up the pick-up tube quickly, or = how long after starting the engine does oil pressure come up?=20 Ready to try a first start of the engine if oil pressure could be = counted on to come up.=20 Perplexed as to why I get oil pressure sometimes and not every = time I spin the engine.=20 Wendell (with oil all over the place) ------=_NextPart_000_0007_01C53432.E609D3A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Good Point, Kelly.
 
Yes, the key is easy to push out = of its slot=20 when sliding the oil pump sprocket on the shaft.  Most of the time = it will=20 fall out and you can spot it.  In my case, it got trapped between = the=20 sprocket and oil pump housing and did not fall out.  In later = examining the=20 pump, you could see the impression in the softer aluminum pump housing = where the=20 torquing of the shaft nut had forced the key into the housing.  = Flew for 10=20 hours with just the clamping force of the torque, until a inadvertent = WOT start=20 up on a cool morning with 50 weight oil broke the nuts clamping force=20 loose.
 
I noticed while taxing to the far end = of the runway=20 at Tracy Crooks that the oil pressure was only 20 psi vs the normal = 35-40=20 psi.  Thought it must surely be a pressure sensor or gauge problem. = But,=20 just couldn't bring myself to take-off, so taxied back and started=20 test. First all the sensor and gauge.   But, all test = indicated=20 an internal problem, took the engine off, and while washing out the oil = pan hear=20 a "clink" of metal in the pan and found the beat-up oil pump = shaft key=20 lying there.  So it can happen.
 
Ed A
----- Original Message -----
From:=20 Kelly = Troyer
Sent: Tuesday, March 29, 2005 = 4:50=20 AM
Subject: [FlyRotary] Re: Oil = Flow

 
Wendell
Remember the problem Ed Anderson had.......When oil pump pulley = was
installed the key was pushed out of the keyway and he was flying = for=20 a
period of time with just the friction of the taper between = the=20 oilpump shaft
and the pulley driveing the pump.......Something to = consider......
--
Kelly Troyer
Dyke=20 Delta/13B/RD1C/EC2




--------------=20 Original message from "Wendell Voto" <jwvoto@itlnet.net>:=20 --------------

 
 
Subject: [FlyRotary] Re: = Oil=20 Flow

Got (some) oil flow.

Remove the pick-up tube and cleaned off Hylomar. Cut a new = gasket out=20 of some gasket stock I had lying around and installed pick-up tube = without=20 any sealant.

Hooked up starter (plugs removed) and spun engine, no joy. = Removed=20 outlet hose and primed pump again. Got oil flow. Reconnected oil = line and=20 left it slightly loose and had oil pressure gauge sender out. = Cranked=20 engine, oil flowed out of pressure sender hole. Let engine set = while bat=20 recharged some. Tried again, no oil.

Repeated priming and had oil flow, reconnected line and this = time oil=20 flow was good. Put oil pressure sender on and cranked engine, had = oil=20 flow. Let engine set several minutes, cranked again, had oil flow. = Let set=20 some more, no flow while cranking.

Racing beat catalog says to charge the oil line by cranking the = engine=20 without spark plugs installed as I did but got varying results, = sometimes=20 got oil pressure (couldn't measure it - use ohmmeter to see if = sender saw=20 any pressure) and some times I didn't. How fast does the engine = have to go=20 the get oil to suck up the pick-up tube quickly, or how long after = starting the engine does oil pressure come up?

Ready to try a first start of the engine if oil pressure could = be=20 counted on to come up.

Perplexed as to why I get oil pressure sometimes and not every = time I=20 spin the engine.

Wendell (with oil all over the place)

 
------=_NextPart_000_0007_01C53432.E609D3A0--