flyrotary@lancaironline.net Mailing List Archive

I was looking at some pictures on my I-phone of my engine with the front cover off and it does look possible to possible slide out the front stationary gear/bearing. It is just so opposite from the standard build pattern. Mazdatrix sells new front stationary gears with the bearing installed for $100 something. Since I read the bearing install is a bit tricky (as is the removal...for me anyway), I just assume buy the entire assembly from them. The issue is that I am speculating that is may be the front bearing since I have mucked around with everything else, or so I think.

I do want to tear into what ever task I decide on as I want to get back to squawks and you know the potential flight thing.

I hope Lynne is monitoring and Ed and...well, y'all know the list. I have been reading his and others previous post and that is what has caused me to somewhat suspect the front bearing.

Chris

From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of Kelly Troyer [keltro@att.net]
Sent: Thursday, July 14, 2011 7:41 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Oil Pressure Again

Chris,

Certainly hope the front bearing is not the culprit but check with Lynn Hanover about

the possibilty of pulling front stationary gear without disassembling engine...........I think

it is possible as long as engine is not rotated before reassembly...........

Kelly Troyer
"DYKE DELTA JD2" (Eventually)

"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

"TURBONETICS"_TO4E50 Turbo

From: Chris Barber <cbarber@texasattorney.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thursday, July 14, 2011 6:51 PM
Subject: [FlyRotary] Re: Oil Pressure Again

I am running 40 weight. I am letting the oil warm up but hesitate running too long since the pressure is low.

Chris

From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of Chris Barber [cbarber@texasattorney.net]
Sent: Thursday, July 14, 2011 6:46 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Oil Pressure Again

I hesitate asking about this again, but I am too close to possibly flying to drop the ball too much now. I have a drop in oil pressure again. It has dropped from the high 60's or so to between 20 psi to 40 psi (20 to 30 at lower RPM and only up to around 40+ as I increase power).

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

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 would thinking a blockage, depending on where it is, would increase pressure). One of the disadvantages of the Conversion Concepts mount is that I pretty much have to pull the engine to check the bottom end.

My question is, other than the mentioned items, what else could cause this sort of drop. I have hooked up a mechanical pressure gage (instead of the RWS EM2 ). 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. I hate the idea of having to tear down the engine again to replace this part especially since the engine is running all but perfectly and I was doing squawks preparing for my DAR inspection before this issue crept up.

Also, even though I can't think of a way, is there any way to replace the front stationary gear/bearing without cracking the engine...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 apparently not well enough to make it actually work right.

As opposed to mucking around with red hearings and wild goose chases, I figured I would just ask again. And yes, I have been reviewing the archives already .

TIA

Thanks

Chris Barber

Houston.