Mailing List flyrotary@lancaironline.net Message #31629
From: Tracy Crook <lors01@msn.com>
Subject: Re: [FlyRotary] Re: Was Oil Pressure and Now...
Date: Wed, 3 May 2006 15:23:25 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Message
With all due respect to Dave, this sounds fishy.   Assuming there was "a problem with the PSRU", it would not show up in bearings unless the oil filter was completely clogged with debris or the oil pump had been damaged (was it?).  From your description of the filter, it was far from clogged.
 
Debris from the drive can only go to the oil pan.  Anything that made its way past the oil pickup screen and through the oil pump would have to then go through the filter before it got to the bearings.  Is this the theory  or is there another explanation?
 
Tracy  (tired of hearing from Dave that my drives can't work)
 
 
Subject: [FlyRotary] Re: Was Oil Pressure and Now...

>We'll all be interested to hear what they find.      

 

Went to see David Atkins yesterday. He continues to be a good person and business to deal with. He took the time amidst the chaos to have the engine completely torn down and inspected piece by piece as it was disassembled – while I was there. It all looked pretty good until the front housing E-shaft bearing. There was definitely some abnormal wear there and some scuff marks on the E-shaft. There was also some wear on the center bearing but just on the forward 1/10th of an inch. He’s going to replace the bearing and rebuild the engine and then check the oil pressure.

 

He suggested I look for any source of chips or anything coming from the PSRU. Something caused that front bearing to get worn way too quickly and he suspects there may be a problem with the PSRU since we didn’t find anything in the engine that looked like it was shedding metal.

 

I’ll try to get up to the hangar in the next couple of days to retrieve the RD-1B and bring it home for disassembly and inspection.

 

ThanxAll,

Joe Hull

Cozy Mk-IV #991 (In Phase1 Flight Test - 10.9 hrs flown)

Redmond (Seattle), Washington

Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster