Return-Path: Received: from [24.25.9.100] (HELO ms-smtp-01-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 3053247 for flyrotary@lancaironline.net; Mon, 01 Mar 2004 17:12:58 -0500 Received: from edward (clt78-020.carolina.rr.com [24.93.78.20]) by ms-smtp-01-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i21MCtSn008242 for ; Mon, 1 Mar 2004 17:12:56 -0500 (EST) Message-ID: <000801c3ffda$591fb730$2402a8c0@edward> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: 13B smooth running issues Date: Mon, 1 Mar 2004 17:12:55 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0005_01C3FFB0.700E2CD0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0005_01C3FFB0.700E2CD0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ----- Original Message -----=20 From: John Slade=20 To: Rotary motors in aircraft=20 Sent: Monday, March 01, 2004 4:43 PM Subject: [FlyRotary] Re: 13B smooth running issues > John, I would tune using the air/fuel indicator. =20 > I would establish an rpm say starting at 2000 and initially go up in = 500 rpm stages. .... Thanks, Ed. This leads me to a question. I have a manual wastegate. = Should I do this with it closed or open? John, I would first tune the engine for NA or Non-boost operation = (Waste Gate open) to make certain everything sets up correctly. If is = easy to get into detonation if you are running boost and the fuel = mixture is too lean whereas it is its difficult to hurt the engine = operating NA. Now if you have set it up correctly for NA then if you = have the turbo version of the EC2 it should compensate automatically = when under boost. You might have to twik it with mixture while under = boost but start out without boost. On another note, I have a "push fit" hose barb that goes in a coolant = hole on top of the engine. It seems a bit loose. Any suggestions as to = how to make certain it doesn't come out? Not certain exactly which coolant hole you are referring to. Is this = the one with the tube that feeds the heater? But, if its an = interference fit and is loose, you'll want to take care of that rather = than risk having a coolant leak. No knowing exactly what your hose barb = is made of -its hard to advise. However, here is a make shift fix = assuming its the coolant tube which sticks out of the block a couple of = inches. Take a section of hose that has a large enough inside diameter = to fit over the metal tube AND your hose. Then take a hose clamp and = tighten it down around the tube after placing this section over your = hose and the tube. Fit another one over the hose that has your barb. = That will hold your hose and bar in position as the new section of hose = won't permit it to pull off the tube. Oh - and one other thing - do you have an accumulator on you're vacuum = / smog pump? I'm getting vacuum now - between 4 and 4 inches, but the = needle is "jiggling" indicating an unsteady source. Do you get this? = Does it settle down at higher rpm? I don't have a accumulator but I do have an aircraft vaccum pressure = regulator and no I do not get any jiggling. Its possible that one of = the lobes of the rotor is not functioning correctly (worn/broke etc) and = that is why it is jiggling. John Slade (time to put the prop on) ------=_NextPart_000_0005_01C3FFB0.700E2CD0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
From:=20 John=20 Slade
Sent: Monday, March 01, 2004 = 4:43=20 PM
Subject: [FlyRotary] Re: 13B = smooth=20 running issues

> John, I would tune using = the=20 air/fuel indicator.   
> I would establish an rpm = say=20 starting at 2000 and initially go up in 500 rpm stages.  ....
Thanks, Ed. This leads me to a question. I = have a=20 manual wastegate. Should I do this with it closed or=20 open?
 
John, I=20 would first tune the engine for NA or Non-boost operation (Waste Gate = open) to=20 make certain everything sets up correctly. If is easy to get into = detonation=20 if you are running boost and the fuel mixture is too lean whereas it = is its=20 difficult to hurt the engine operating NA.  Now if you have set = it up=20 correctly for NA then if you have the turbo version of the EC2 it = should=20 compensate automatically when under boost.  You might have to = twik it=20 with mixture while under boost but start out without=20 boost.
 
 
On another note, I have a "push fit" hose = barb that=20 goes in a coolant hole on top of the engine. It seems a bit loose. Any = suggestions as to how to make certain it doesn't come=20 out?
 
Not certain=20 exactly which coolant hole you are referring to.  Is this the one = with=20 the tube that feeds the heater?   But, if its an = interference=20 fit and is loose, you'll want to take care of that rather than risk = having a=20 coolant leak.  No knowing exactly what your hose barb is = made=20 of  -its hard to advise.  However, here is a make shift fix = assuming=20 its the coolant tube which sticks out of the block a couple of = inches. =20 Take a section of hose that has a large enough inside diameter to fit = over the=20 metal tube AND your hose.  Then take a hose clamp and tighten it = down=20 around the tube after placing this section over your hose and the = tube. =20 Fit another one over the hose that has your barb.  That will hold = your=20 hose and bar in position as the new section of hose won't permit it to = pull=20 off the tube.
 
Oh - and one other thing - do you have an = accumulator=20 on you're vacuum / smog pump? I'm getting vacuum now - between 4 and 4 = inches,=20 but the needle is "jiggling" indicating an unsteady source. Do you get = this?=20 Does it settle down at higher rpm?
 
I don't have=20 a accumulator but I do have an aircraft vaccum pressure regulator and = no I do=20 not get any jiggling.  Its possible that one of the lobes of the = rotor is=20 not functioning correctly (worn/broke etc) and that is why it is=20 jiggling.
 
John Slade (time to put the prop=20 on)
 
 
 
------=_NextPart_000_0005_01C3FFB0.700E2CD0--