X-Virus-Scanned: clean according to Sophos on Logan.com X-PolluStop-Diagnostic: \eX-PolluStop-Score: 0.00\eX-PolluStop: Scanned with Niversoft PolluStop 2.1 RC1, http://www.niversoft.com/pollustop Return-Path: Received: from [24.25.9.101] (HELO ms-smtp-02-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.3c4) with ESMTP id 865583 for flyrotary@lancaironline.net; Mon, 11 Apr 2005 19:58:45 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.101; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-185-127.carolina.res.rr.com [24.74.185.127]) by ms-smtp-02-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id j3BNvu0W011870 for ; Mon, 11 Apr 2005 19:57:58 -0400 (EDT) Message-ID: <004501c53ef2$4a013cd0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" Subject: Latest on the Motor Trouble Date: Mon, 11 Apr 2005 19:57:59 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0042_01C53ED0.C2BB1F50" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0042_01C53ED0.C2BB1F50 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Latest status on the engine problem: Unfortunately a breakdown in one of the households most important = appliances ( in the wife's view), i.e. - the washing machine precluded = me getting the engine unbuttoned today. Got as far as getting the = flywheel nut off when got side tracked. However, here are some interesting tidbits. Al told me he could not = find an NGK B9EQV - odd I thought- since I purchased some. Well when I = opened up the tool box there as plain as day was B9EGV - the CORRECT = PLUG - I am beginning to feel like I am in the twilight zone. All four = -all are the B9EGV! So the right plug - so how come the problem or was it all an figment of = my troubled mind? =20 No figment about the problem, I could better examine the apex seals = through the exhaust with a bright light. I found one apex seal = shattered into three pieces, one stuck down as if springs are broken and = one which appears to move normally in its slot, but has nicks. Well as = we all know when two of the apex seals are gone on a rotor they might as = well all three be gone. Now here is where it gets a bit more spooky - I took one of the B9EGV = plugs and screw them into an 86 NA rotor housing (thanks for the = suggestion, George - down under) I have laying around. I then measured = from the inside of the housing to the ground electrode of the plug - = hold onto your hats - it measured 7.5 mm! I could be off by a mm but = certainly places the electrode no where close to the chamber (relative = speaking). =20 So either the 91 turbo housings (will find out tomorrow) have shorter = sparkplug holes OR the plugs had nothing to do with the problem. = Possibly some other FOD item - but I use no nuts or screws any place in = the induction system that would cause them to fall off into the runners. = =20 I've already reported that the next most likely candidate - pieces of = the plastic plenum were a negative as all pieces are still in place. I really hate to end the day without getting the bottom of this problem, = but just too beat to tackle it. Sitting here in front of the computer = with a cool brew - which is something I don't ever recall doing before = (not the drinking, and not the computer - but both together!) I am taking photos as I disassemble the engine. It took me 15 minutes = once I had the engine on the work stand to get Tracy's gearbox, damper = plate, flex plate and flywheel nut off. Next comes the flex plate, my = broken-bolt shield and then the 17 tension bolts (guess I better = remember to put heat shrink on them). =20 Anyhow, thanks to all of you who had suggestions, comments or = condolences conveyed to me. Appreciate them all and I will keep you = informed as the disassembly progresses. Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com ------=_NextPart_000_0042_01C53ED0.C2BB1F50 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Latest status on the engine = problem:
 
Unfortunately a breakdown in one of the = households=20 most important appliances ( in the wife's view), i.e. - the washing = machine=20 precluded me getting the engine unbuttoned today.  Got as far as = getting=20 the flywheel nut off when got side tracked.
 
However, here are some interesting = tidbits. =20 Al told me he could not find an NGK B9EQV - odd I thought- = since I=20 purchased some.  Well when I opened up the tool box there as plain = as day=20 was B9EGV - the CORRECT PLUG - I am beginning to feel like I am in the = twilight=20 zone.  All four -all are the B9EGV!
 
So the right plug - so how come the = problem or was=20 it all an figment of my troubled mind? 
 
No figment about the problem, I could = better=20 examine the apex seals through the exhaust with a bright light.  I = found=20 one apex seal shattered into three pieces, one stuck down as if springs = are=20 broken and one which appears to move normally in its slot, but has = nicks. =20 Well as we all know when two of the apex seals are gone on a rotor they = might as=20 well all three be gone.
 
Now here is where it gets a bit more = spooky - I=20 took one of the B9EGV plugs and screw them into an 86 NA rotor housing = (thanks=20 for the suggestion, George - down under) I have laying around.  I = then=20 measured from the inside of the housing to the ground electrode of the = plug -=20 hold onto your hats - it measured 7.5 mm!  I could be off by a mm = but=20 certainly places the electrode no where close to the chamber (relative=20 speaking). 
 
So either the 91 turbo housings (will = find out=20 tomorrow) have shorter sparkplug holes OR the plugs had nothing to do = with the=20 problem.  Possibly some other FOD item - but I use no nuts or = screws any=20 place in the induction system that would cause them to fall off into the = runners. 
I've already reported that the next = most likely=20 candidate - pieces of the plastic plenum were a negative as all pieces = are still=20 in place.
 
I really hate to end the day without = getting the=20 bottom of this problem, but just too beat to tackle it.  Sitting = here in=20 front of the computer with a cool brew - which is something I don't ever = recall=20 doing before (not the drinking, and not the computer - but both=20 together!)
 
I am taking photos as I disassemble the = engine.  It took me 15 minutes once I had the engine on the work = stand to=20 get Tracy's gearbox, damper plate, flex plate and flywheel nut = off.  Next=20 comes the flex plate, my broken-bolt shield and then the 17 tension = bolts (guess=20 I better remember to put heat shrink on them). 
 
Anyhow, thanks to all of you who had = suggestions,=20 comments or condolences conveyed to me.  Appreciate them all and I = will=20 keep you informed as the disassembly progresses.
 
 
Ed
Ed Anderson
Rv-6A N494BW Rotary=20 Powered
Matthews, NC
eanderson@carolina.rr.com
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