X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from omta4.toronto.rmgopenwave.com ([4.59.182.102] verified) by logan.com (CommuniGate Pro SMTP 5.3c3) with ESMTP id 4005225 for flyrotary@lancaironline.net; Sun, 06 Dec 2009 19:24:32 -0500 Received-SPF: pass receiver=logan.com; client-ip=4.59.182.102; envelope-from=lacombr@nbnet.nb.ca Received: from torspm04.toronto.rmgopenwave.com ([142.167.65.14]) by tormtz05.toronto.rmgopenwave.com (InterMail vM.8.00.01.00 201-2244-105-20090324) with ESMTP id <20091207002350.QBUA11723.tormtz05.toronto.rmgopenwave.com@torspm04.toronto.rmgopenwave.com> for ; Sun, 6 Dec 2009 19:23:50 -0500 Received: from PCdeRita ([142.167.65.14]) by torspm04.toronto.rmgopenwave.com with SMTP id <20091207002349.KFXG5990.torspm04.toronto.rmgopenwave.com@PCdeRita> for ; Sun, 6 Dec 2009 19:23:49 -0500 Message-ID: <3653B023FEE24FBA93F3F20CFC32700F@PCdeRita> From: "Rino" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Oil starvation Date: Sun, 6 Dec 2009 20:23:30 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_007A_01CA76B1.F9D3B290" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18005 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18005 X-Opwv-CommTouchExtSvcRefID: str=0001.0A020209.4B1C4B16.004E,ss=1,fgs=0 This is a multi-part message in MIME format. ------=_NextPart_000_007A_01CA76B1.F9D3B290 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks Lynn for your advice on the engine, and taking good care of your = health for us, we need you here! I premix the oil. I use Mobil I 10-30 oil. I can see your point in = using racing oil because I have the oil foaming problem. Rino ----- Original Message -----=20 From: Lynn Hanover=20 To: Rotary motors in aircraft=20 Sent: Sunday, December 06, 2009 12:59 PM Subject: [FlyRotary] Oil starvation Here is the photo of the end housing damage by the oil starvation. > > Rino Lacombe Noting too bad there. The dark spots will be harder than the other = areas now and will resist being smoothed down.=20 Hit those lightly with a course stone then lap the irons against each = other. Valve grinding compound is fine. Just get a dull grey surface all = over. If one of the damaged area keeps showing up as a shiny spot, hit = it again with the stone and lap some more. You can rig up a vertical mill to run slow enough to drag an iron = around in circles with an offset bearing.=20 Or, do it by hand. If after several hours of lapping, your suspect = iron is only showing grey on two corners, the iron is warped beyond repair, and you need another iron.=20 Sand the thrust surfaces on the rotors smooth. Put the rotors in a press and push the gear into its hole good and = hard. Measure to be sure the land width is well below the minimum. (The = width of the rotor housings).The side seals and corner seals will keep = the rotors centered just fine. If you premix oil and fuel, use a synthetic straight weight oil in the = sump. 40 wt unless you fly in Canada in the winter. And premix a name = brand 2 cycle oil in the fuel. If you use the OMP, then use a straight = weight racing oil in the sump. 40 weight again but a conventional oil = not a synthetic.=20 Why the racing oil? Why a conventional? Why a synthetic? A synthetic is by far the best lubricant, but most of them don't burn = very well. So, if you premix, its the best choice.=20 Racing oil has an additive that breaks up foam bubbles. Rotaries make = lots of foam by squirting a stream of oil into the spinning rotors. = Racing oils have lots of zinc compounds in them to prevent metal = transfere. We don't want any metal transfer. So, the best sump oil when premixing is a synthetic racing oil. More = antiscuff, more anti foam and the best lubricant. The 6,000 RPM you turn up an airplane engine is not the same as the = 3,000 you might turn up a car engine. The street oil people hope you = won't go over 4,000 RPM. The racing oil people know you will go over = 6,000 RPM. My driver shifts at 9,600 RPM. Because the power curve has = started down, not because the engine will not go higher without damage.=20 =20 In unlimited intake rules racing, the limit is 10,700 for short races = and 10,300 for long races. In drag racing they leave the line at over = 11,000 RPM.=20 You do of course have to keep oil in it......... Lynn E. Hanover And on a darker note: Get a Doppler Carotid check. Cheap, fast, painless. My wife hounded me = into getting one and I resisted because I don't like doctors or = hospitals and I had no symptoms at all. My Doppler showed a major = blockage on the right side. I did a dye check. Plastick hose through the = groin into the Carotid to make high contrast movies in great detail from = various angles. Not as bad as it sounds, but takes up a day of laying = still in a bed watching TV. The movie shows a 99% blockage. The Doctor = canceles office hours on Friday and does my Carotided. Cut open neck, = cut open artery, peel out 1/2 pound of plaque, sew up artery, staple up = neck. Feels fine just a bit stiff the first day.=20 In the pictures it looks like a black soda straw with a one inch = section missing. I was one sneeze away from........ And I have big arteries. Smaller folks don't fare as well. So get it = done. Any candy ass can get through the Doppler test. They just rub your = neck with a sensor. Maybe a pretty girl will do yours. Takes 5 minutes. = Do it. So we won't have to help your widow sell your junk. ------=_NextPart_000_007A_01CA76B1.F9D3B290 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Thanks Lynn for your advice on the = engine, and=20 taking good care of your health for us, we need you here!
I premix the oil.  I use Mobil = I  10-30=20 oil.  I can see your point in using racing oil because I have the = oil=20 foaming problem.
 
Rino
----- Original Message -----
From:=20 Lynn=20 Hanover
Sent: Sunday, December 06, 2009 = 12:59=20 PM
Subject: [FlyRotary] Oil = starvation

 Here is the photo of the end housing damage by the oil=20 starvation.
>
> Rino Lacombe
 
 
Noting too bad there. The dark spots will be harder than the = other areas=20 now and will resist being smoothed down.
 
Hit those lightly with a course stone then lap the irons against = each=20 other. Valve grinding compound is fine. Just get a dull grey surface = all over.=20 If one of the damaged area keeps showing up as a shiny spot, hit it = again with=20 the stone and lap some more.
 
You can rig up a vertical mill to run slow enough to drag an iron = around=20 in circles with an offset bearing.
 
Or, do it by hand. If after several hours of lapping, your = suspect iron=20 is only showing grey on two corners,
 
the iron is warped beyond repair, and you need another iron. =
 
Sand the thrust surfaces on the rotors smooth.
 
Put the rotors in a press and push the gear into its hole good = and hard.=20 Measure to be sure the land width is well below the minimum. (The = width of the=20 rotor housings).The side seals and corner seals will keep the rotors = centered=20 just fine.
 
If you premix oil and fuel, use a synthetic straight weight oil = in the=20 sump. 40 wt unless you fly in Canada in the winter. And premix a name = brand 2=20 cycle oil in the fuel. If you use the OMP, then use a straight weight = racing=20 oil in the sump. 40 weight again but a conventional oil not a = synthetic.=20
 
Why the racing oil? Why a conventional? Why a synthetic?
 
A synthetic is by far the best lubricant, but most of them don't = burn=20 very well. So, if you premix, its the best choice.
 
Racing oil has an additive that breaks up foam bubbles. Rotaries = make=20 lots of foam by squirting a stream of oil into the spinning rotors. = Racing=20 oils have lots of zinc compounds in them to prevent metal = transfere.
 
We don't want any metal transfer.
 
So, the best sump oil when premixing is a synthetic racing oil. = More=20 antiscuff, more anti foam and the best lubricant.
 
The 6,000 RPM you turn up an airplane engine is not the same as = the 3,000=20 you might turn up a car engine. The street oil people hope you won't = go over=20 4,000 RPM. The racing oil people know you will go over 6,000 RPM. My = driver=20 shifts at 9,600 RPM. Because the power curve has started down, not = because the=20 engine will not go higher without damage. 
 
In unlimited intake rules racing, the limit is 10,700 for short = races and=20 10,300 for long races. In drag racing they leave the line at over = 11,000 RPM.=20
 
You do of course have to keep oil in it.........
 
Lynn E. Hanover
 
And on a darker note:
 
Get a Doppler Carotid check. Cheap, fast, painless. My wife = hounded me=20 into getting one and I resisted because I don't like doctors or = hospitals and=20 I had no symptoms at all.  My Doppler showed a major blockage on = the=20 right side. I did a dye check. Plastick hose through the groin into = the=20 Carotid to make high contrast movies in great detail from various = angles.=20 Not as bad as it sounds, but takes up a day of laying still in a bed = watching=20 TV. The movie shows a 99% blockage. The Doctor canceles office hours = on Friday=20 and does my Carotided. Cut open neck, cut open artery, peel out 1/2 = pound of=20 plaque, sew up artery, staple up neck. Feels fine just a bit stiff the = first=20 day.
 
In the pictures it looks like a black soda straw with a one inch = section=20 missing. I was one sneeze away from........
 
And I have big arteries. Smaller folks don't fare as well. So get = it=20 done. Any candy ass can get through the Doppler test. They just rub = your neck=20 with a sensor. Maybe a pretty girl will do yours. Takes 5 minutes. Do = it. So=20 we won't have to help your widow sell your=20 junk. 
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