Return-Path: Received: from imf20aec.mail.bellsouth.net ([205.152.59.68] verified) by logan.com (CommuniGate Pro SMTP 4.2b5) with ESMTP id 150576 for flyrotary@lancaironline.net; Sun, 13 Jun 2004 06:26:05 -0400 Received: from [68.215.70.51] by imf20aec.mail.bellsouth.net (InterMail vM.5.01.06.08 201-253-122-130-108-20031117) with ESMTP id <20040613102533.GUGD18130.imf20aec.mail.bellsouth.net@[68.215.70.51]> for ; Sun, 13 Jun 2004 06:25:33 -0400 User-Agent: Microsoft-Entourage/10.1.4.030702.0 Date: Sun, 13 Jun 2004 06:25:29 -0400 Subject: Re: [FlyRotary] Re: Some Taxi testing today. With oil leak. From: Bulent Aliev To: Rotary motors in aircraft Message-ID: In-Reply-To: Mime-version: 1.0 Content-type: multipart/alternative; boundary="B_3169952733_21280986" > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3169952733_21280986 Content-type: text/plain; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable On 6/13/04 2:32 AM, "keltro@att.net" wrote: >=20 >=20 >=20 >=20 >=20 >=20 > =20 >=20 >>=20 >> -------------- Original message from "DaveLeonard" : -------------- >>> > I got the turbo back from the re-build shop today and did some high s= peed >>> > taxi testing. I even got the tail off the ground.... :-) >>> >=20 >>> > Cooling has not been an issue yet for easy ground testing. Coolant an= d oil >>> > both maxed at 70C (160F). >>> >=20 >>> > With Jim Maher's help I fixed my tach and found that I really am gett= ing >>> > more than 4500 RPM. To be specific, 4700 static at 29"MAP and 5300 at= 33" >>> > using Jim Mosur's old prop (similar to Tracy's old prop?) And that's >>> enough=20 >>> > to fly.=20 >>> >=20 >>> > First flight was scheduled for Sat the 19th, but the turbo continues = to >>> spew=20 >>> > oil-smoke. I am beginning to wonder if I am feeding it too much oil. = Rusty >>> > says that is an internal restrictor, but looking in the oil inlet it = looks >>> > like it goes straight to an oil gallery. I am feeding it with an AN-6 >>> line.=20 >>> > I think I should try putting in a restrictor but I don't know how big= to >>> > make the opening. Any input? >>> >=20 >>> > The oil return is also AN-6 (and bigger) and is all downhill to the p= an. >>> >=20 >>> > Dave Leonard - Should have gone n.a. Should have gone n.a. Should hav= e >>> gone=20 >>> > n.a. (not really) >>> > Dave, >>=20 >> =20 >>=20 >> As I recall from previous posts the 80psi +or - oil pressure of the = 13B >> is a >>=20 >> =20 >>=20 >> little much for the turbo oil seal. I would put a restrictor in the feed= line >> or >>=20 >> =20 >>=20 >> fitting. I would think 40psi or less would be plenty. Are you using the = stock >>=20 >> =20 >>=20 >> oil feed lines or replacements? Has anyone in the group ever checked the >>=20 >> =20 >> stock Mazda lines or fittings for a restrictor? IMHO >>=20 >> =20 >>=20 >> =20 >>=20 >> Kelly Troyer >>=20 >>=20 Dave, I have not seen a restrictor, but the stock feed line is only about 1/4=B2 OD steel and the drain is 1/2=B2 steel. By the looks of it, you are over pressurizing the oil galery. Bulent --B_3169952733_21280986 Content-type: text/html; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable Re: [FlyRotary] Re: Some Taxi testing today. With oil leak. On 6/13/04 2:32 AM, &qu= ot;keltro@att.net" <keltro@att.net> wrote:







 


-------------- Original message from "DaveLeonard" : ------------= --
> I got the turbo back from the re-build shop today and did some high sp= eed
> taxi testing. I even got the tail off the ground.... :-)
>
> Cooling has not been an issue yet for easy ground testing. Coolant and= oil
> both maxed at 70C (160F).
>
> With Jim Maher's help I fixed my tach and found that I really am getti= ng
> more than 4500 RPM. To be specific, 4700 static at 29"MAP and 530= 0 at 33"
> using Jim Mosur's old prop (similar to Tracy's old prop?) And that's e= nough
> to fly.
>
> First flight was scheduled for Sat the 19th, but the turbo continues t= o spew
> oil-smoke. I am beginning to wonder if I am feeding it too much oil. R= usty
> says that is an internal restrictor, but looking in the oil inlet it l= ooks
> like it goes straight to an oil gallery. I am feeding it with an AN-6 = line.
> I think I should try putting in a restrictor but I don't know how big = to
> make the opening. Any input?
>
> The oil return is also AN-6 (and bigger) and is all downhill to the pa= n.
>
> Dave Leonard - Should have gone n.a. Should have gone n.a. Should have= gone
> n.a. (not really)
>    Dave,

 

    As I recall from previous posts the 80psi +or - oil= pressure of the 13B is a

 

little much for the turbo oil seal. I would put a restrictor in the feed li= ne or

 

fitting. I would think 40psi or less would be plenty. Are you using the sto= ck

 

oil feed lines or replacements? Has anyone in the group ever checked the
            &nb= sp;            &= nbsp;            = ;            &nb= sp;            &= nbsp;            = ;            &nb= sp;            &= nbsp;            = ;            &nb= sp;            &= nbsp;            = ;            &nb= sp;            &= nbsp;            = ;            &nb= sp;            &= nbsp;      
stock Mazda lines or fittings for a restrictor? IMHO

 

 

 Kelly Troyer


Dave,
I have not seen a restrictor, but the stock feed line is only about 1/4R= 21; OD steel and the drain is 1/2” steel.
By the looks of it, you are over pressurizing the oil galery.
Bulent --B_3169952733_21280986--