flyrotary@lancaironline.net Mailing List Archive

Thanks Ed, I remember that story now. I do remember what a bugger it was to get the key in such that I was confident it would stay, but it will be one more thing to look for. Chris ________________________________________ From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of Ed Anderson [eanderson@carolina.rr.com] Sent: Monday, August 27, 2012 8:40 AM To: Rotary motors in aircraft Subject: [FlyRotary] Woodruff key check [FlyRotary] Re: Oil pressureagain Agree with Mark - check woodruff key Here was my experience with it Ed > Chris, having had some experience with that problem (the only problems I > haven't had experience with is turbo related {:>). > > A couple of things - one of course, is the possibility of the "O" ring > slipping out of place, bad oil pump, oil regulator, etc. > > However, one thing that nearly bit me is I flew for 10 hours without the > woodruff key in the oil pump shaft. The nut torque was holding it in > place until I had a start (with throttle Wide open on a cool morning with > 50 W oil) which broke the nut torque loose - when taxing out for take off > at Tracy's but could get oil pressure above 25 psi - so aborted the > planned take off. Finally took the oil pan off only to hear some > "clinking" in the pan. As soon as I picked it up the metal object , I > knew what the problem was. > > Apparently while I had inserted the key, when I pushed the gear sprocket > on the shaft I push the key out fall enough to catch it between the > sprocket and aluminum pump housing when I torqued the nut (the impression > of the key was in the pump housing). So if didn't fall into the pan or > out on the bench where I might have noticed it. However, once the engine > fire up for the first time it threw the key into the pan. > > Fortunately leaving the throttle Wide Open and forgetting to close it > before engine start caused the engine to zoom to 5500 rpm and the 50 > weight oil apparent cause the nut to lose its grip and although I didn't > really believe I had an oil problem (thought it was probably the sensor) , > I just couldn't talk myself into taking off - fortunately. > > Ed > > Edward L. Anderson > Anderson Electronic Enterprises LLC > 305 Reefton Road > Weddington, NC 28104 > http://www.andersonee.com > http://www.eicommander.com > > > So just add woodruff key to your checklist if its not already there. > > Ed > > -------------------------------------------------- > From: "Chris Barber" <cbarber@texasattorney.net> > Sent: Sunday, August 26, 2012 2:29 PM > To: "Rotary motors in aircraft" <flyrotary@lancaironline.net> > Subject: [FlyRotary] Re: Oil pressure again > >> I don't think it is the sensors as I have two and the drop is consistent >> on both. I have both the RWS sensor and the Dynon. It seems to be >> having trouble getting in the mid 20 psi range. >> >> I have a busy week so I think I am about to order new oil pump and O-ring >> and spacer Hopefully it will arrive about the time my time frees up I >> figure it can't hurt and that will pretty much make everything in the >> engine new except the rotors and e-shaft. >> >> Chris >> >> Sent from my iPhone 4 >> >> On Aug 26, 2012, at 1:15 PM, "Bobby J. Hughes" <bhughes@qnsi.net> wrote: >> >>> Chris >>> >>> How much has it dropped? Could it be the sensor? I had one fail early in >>> phase 1. Every time I pitched up the pressure would drop and trigger an >>> alarm. >>> >>> Bobby >>> >>> >>> Sent from my iPad >>> >>> On Aug 26, 2012, at 9:11 AM, "Chris Barber" <cbarber@texasattorney.net> >>> wrote: >>> >>>> My oil pressure has dropped again. I am jumping to the conclusion it is >>>> that pesky front cover O-ring. I know I was meticulous with installing >>>> it last time. While it may be something else, I doubt it. I had the >>>> pressure valve fall into the pan a couple of years ago and it is now >>>> safety wired in. Perhaps it is the oil pump but it seems so simple and >>>> not prone to failure. >>>> >>>> So, to make this more than a vent, as I know mostly how to address >>>> this....contrary to the evidence that I am having to screw with it >>>> again, is there any words of wisdom y'all would care to share. Since I >>>> will at least have the front cover off (should be able to do do with >>>> engine on the plane) would this be a good time to replace the oil pump. >>>> It has not been replaced in the past do it is many years old with an >>>> unknown number of miles. Is there a "better" oil pump out there than >>>> the turbo version offered by Mazdatrix that I should ponder? >>>> >>>> I may have the oil ring and plastic retaining ring already if I can >>>> find them. Just gotta find the time to crack into it. Then to continue >>>> my turbo diagnosis. Great power without intercooler (even though I >>>> found no restriction, but it is a super cheap intercooler from eBay) >>>> and blow off valve or even N/A. Obvious limited breathing with the >>>> cheap intercooler and blow off valve >>>> >>>> TIA. >>>> >>>> Chris Barber >>>> Houston >>>> >>>> Sent from my iPhone 4 >>>> -- >>>> Homepage: http://www.flyrotary.com/ >>>> Archive and UnSub: >>>> http://mail.lancaironline.net:81/lists/flyrotary/List.html >>> >>> -- >>> Homepage: http://www.flyrotary.com/ >>> Archive and UnSub: >>> http://mail.lancaironline.net:81/lists/flyrotary/List.html >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: >> http://mail.lancaironline.net:81/lists/flyrotary/List.html >> >> >> ----- >> No virus found in this message. >> Checked by AVG - www.avg.com >> Version: 2012.0.2197 / Virus Database: 2437/5225 - Release Date: 08/26/12 >> >> -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html