flyrotary@lancaironline.net Mailing List Archive

Rino, I'd go with whatever Lynn's suggests - however, just for point of reference. I noticed areas on your iron housing where there appeared to be localized heating (probably due to lack of sufficient oil). Well, I once screwed up a rebuild (in a hurry) and the small triangular piece of the Apex seal popped out and fell into one of the milled Lightening holes on the side of the rotor. There was just enough clearance once I buttoned the engine back up to permit the rotors to turn - but they were hard to turn - until I had run the engine for an hour or so. (wore that little sucker down to dust) To make a long story short, the rubbing piece of apex seal heated the iron housing blue hot in an area approx the size of a silver dollar on both sides across the rotor housing from each other (apparently the narrowest part of the combustion chamber). Well, they were brand new side housings, so I decided to see how long they lasted with that kind of localized over heating - still flying with them 160 hours later. No evidence of deterioration so far. Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Rino Sent: Saturday, December 05, 2009 12:00 PM To: Rotary motors in aircraft Subject: [FlyRotary] Engine oil starvation Here is the verdict, after running the engine without oil pressure. Actually the engine stopped in flight. Still after fixing the broken hose, I refilled the engine and flew back home (about 10 minutes). I will replace all the bearings, no apparent damage to the shaft. There is some damage to the bearings, that is probably what stopped the engine in its tracks. Rotor no. 1 and its housings have no damage Rotor no. 2 side housings have some damage -- no damage to rotor no. 2 housing. I whish Lynn would take a look at the included center housing photo and comment. There is some wargage on the face of the end housing and the center housing. I cannot slide a 0.0005 feller gauge under the strait edge but I can see the light. I wonder if lapping the housings would fix that. How much metal can be removed safely, and still have a useable housing? There is no apparent damage to the gears and bearings of the redrive. Rino Lacombe Grounded for a while. __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com