Mailing List flyrotary@lancaironline.net Message #19538
From: Mark R Steitle <mark.steitle@austin.utexas.edu>
Subject: RE: [FlyRotary] Re: Oil Flow
Date: Tue, 29 Mar 2005 07:15:52 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>

Didn’t Lynn Hanover share with us a “racer’s secret” concerning this problem?  As I recall, he recommended holding the key in place while installing the gear on the oil pump by using a dab of super glue on the key.  After installing the gear, check that it is still there using a piece of safety wire.  Or, maybe I dreamed this? 

 

Mark S.

 


From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Kelly Troyer
Sent: Tuesday, March 29, 2005 3:51 AM
To: Rotary motors in aircraft
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

and the pulley driveing the pump.......Something to consider......

--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2


 

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

 

 

Subject: [FlyRotary] Re: Oil Flow

Got (some) oil flow.

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.

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.

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.

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?

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

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

Wendell (with oil all over the place)

 

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