Mark S. =A0

On Fri, J= ul 15, 2011 at 4:31 AM, Chris Barber <cbarber@texasattorney.net> wrote= :

William, et al,

=A0

Trust me, I would love to think it is a sender but I bought a mechanical= gage the other day with the same results as the EM2 .=A0

=A0

I will likely pull the engine this weekend (I work late tomorrow).=A0 I = already pulled the prop.=A0 I will check the pick up.=A0 I do have a half i= nch extension but because I knew it could be a problem I was focused on get= ting a good seal and it is safety wired on, as is the front pressure port.=A0

=A0

Since the engine will be off and easier to work with, I will check the f= ront cover stuff again.=A0 Is there a test on testing the oil pump while it= is off the engine?

=A0

As Lynn mentioned I will be looking for sparkles in the pan and will ope= n up the oil filter too.=A0 Again, I am speculating that it may be the fron= t bearings as it was the one part that was not well in spec.=A0 I could be= =A0completely=A0wrong.=A0 I do not relish the idea of just replacing parts without cause....the gear=A0with bushing = installed I think is=A0$102 from Mazdatrix ....it is always so= mething.

=A0

Not wanting to aimlessly replacing parts is the reason that I am once ag= ain asking for thoughts.=A0 It seems as if I have=A0eliminated most = issues; oil pressure ports, front one safety wired, chain, bent washer, o-r= ing/silicon ring at front cover, safety wired pick up and sealed 1/2 inch extension, key.....and now the bearings.= =A0 So, please,=A0share what I may be missing that may cause this type of= =A0low pressure=A0since I will be looking over the next several days.=A0 Al= so,=A0I did=A0just=A0check the rotor oil seals=A0and=A0rotar parts when I replaced the apex seals and springs a couple of months ago fo= llowing a detonation event.

=A0

I could be discouraged but that may go=A0against my=A0Taurus=A0stubborn nature.=A0 Ok, not stubborn=A0<g>, or so I hope,= but=A0persistent and=A0becoming educated.=A0=A0And, as=A0alw= ays, the=A0ground is the place to discover this stuff and why we ground test and test and test.=A0 Test it until it doesn't=A0fail, = test it a little more, then fly.

=A0

And on a positive not, except for the pesky low oil pressure (yeah, a re= ally big pesky little problem) the engine has been starting a running stron= g and smooth as hell.

=A0

Chris=A0

From: Rotary motors in aircraft [flyrotary@lancaironline.net] on beha= lf of William Wilson [fluffysheap@gmail.com]
Sent: Friday, July 15, 2011 2:57 AM

To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Oil Pressure Again

I had a sending unit go bad once and do this.=A0 It didn't just re= ad zero like you expect, it just kept showing less and less pressure.=A0 It= was about a decade old at the time.

On Thu, Jul 14, 2011 at 5:46 PM, Chris Barber <cbarber@= texasattorney.net> wrote:

I hesitate asking about this again, but I am too close to possibly flyin= g to drop the ball too much now.=A0 I have a drop in oil pressure again.=A0= It has dropped from the high=A060's or so to betw= een 20 psi to 40 psi (20 to 30 at lower RPM and only up to around 40+ as I increase power).

=A0

My first thought was that it was the front o-ring and silicone ring in t= he front cover. So, I pulled the front pan and replaced it.=A0 I also was a= ble to check the front pressure port and the oil pump chain/key/washer etc = and all was good.

=A0

I am about to have to pull the engine to check the bottom of the engine = for the oil pick up and rear port (after checking the hoses, but I=A0would<= a>=A0thinking a blockage, depending on where it is, would increa= se pressure).=A0 One of the disadvantages of the Conversion Concepts mount is that I pretty much have to pull the en= gine to check the bottom end.

=A0

My question is, other than the mentioned items, what else could cause th= is sort of drop.=A0 I have hooked up a=A0mechanical pressure = gage (instead of the=A0RWS EM2 ).= =A0 My concern is that it may be the front bearing as it was the only part I recall being closer to being out of spec= .=A0 I hate the idea of having to tear down the engine again to replace thi= s part=A0especially since the engine is running all but perfe= ctly and I was doing squawks preparing for my DAR inspection before this issue=A0crept up.

=A0

Also, even though I can't think of a way, is there any way to replac= e the front=A0stationary gear/bearing without cracking the en= gine...just had to ask as I am not really liking the idea of cracking open = the engine again, even though I am getting a bit too good at it....but=A0apparently not well enough to = make it actually work right.

=A0

As=A0opposed to mucking around with red hearings and wild = goose chases, I figured I would just ask again.=A0 And yes, I have been rev= iewing the=A0archives already .

=A0

TIA

=A0

Thanks

=A0

Chris Barber

Houston.