Return-Path: Received: from [24.25.9.101] (HELO ms-smtp-02-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 487846 for flyrotary@lancaironline.net; Tue, 26 Oct 2004 23:39:52 -0400 Received-SPF: none receiver=logan.com; client-ip=24.25.9.101; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-069-132-109-019.carolina.rr.com [69.132.109.19]) by ms-smtp-02-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i9R3cK4S026717 for ; Tue, 26 Oct 2004 23:38:21 -0400 (EDT) Message-ID: <001b01c4bbd6$81bc8e30$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] N96PM makes noise once again Date: Tue, 26 Oct 2004 23:39:04 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0018_01C4BBB4.FA6CD3C0" 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_0018_01C4BBB4.FA6CD3C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hey, John, Good to hear. Don't worry about the oil injection holes - = you won't need them {:>) (Sorry, but can't let Rusty have all the fun). I'd be most interested in the results with your new turbo. I think its = fairly clear from recent discourse on the topic (as well as a couple of = incidents) that the A/r housing for the stock Mazda turbo is just too = small for sustained aircraft use at high rpm. The modifications of your = new turbo appear increase your A/r (or at least causes the same effect) = by diverting more exhaust gas around the turbine blades. Also the larger = compressor should also help keep the air temps down and airflow up. =20 Its my opinion that the stock turbo being water cooled (which most = aircraft turbos are not) really should do well as an aircraft turbo - = provided the A/r is considerably increased and a larger compressor wheel = is used AND modest boost pressures are used. Be good to see you in the air again. Best Regards and good luck Ed Anderson ----- Original Message -----=20 From: John Slade=20 To: Rotary motors in aircraft=20 Sent: Tuesday, October 26, 2004 9:39 PM Subject: [FlyRotary] N96PM makes noise once again It's been quiet here lately. Time to liven things up a bit. I'm happy to report that my engine is once again making noise. Well, = it was making noise before, but now it's good noise. I just started the rebuilt engine and taxied around on the ramp in the = dark for 5 minutes or so. It seems to be running very well. I definitely = need to do a bit of tuning, but it's very smooth and responsive.=20 I'm not sure if I mentioned this but there were a number of things = wrong, over and above the damaged seal and rotor housing, any and all of = which might help explain some of the problems I've had since first = running the engine over a year ago.=20 1. The rubber end plugs on the seals were missing - i.e. never = installed. 2. One of the end seals had 30 thou clearance when it should have been = 2 thou 3. (This one is embarrassing). Bruce asked me if I was running premix. = When I said yes, he asked why I'd unplugged the oil injection holes when = I removed the engine. What injector holes?, I asked. Yep. Believe it or = nor, the oil injector ports (next to the primary injector holes) had = been unplugged since day one.=20 Taxi testing and runups tomorrow. John Slade ------=_NextPart_000_0018_01C4BBB4.FA6CD3C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hey, John, Good to hear.  Don't = worry about=20 the oil injection holes - you won't need them {:>) (Sorry, but can't = let=20 Rusty have all the fun).
 
I'd be most interested in the results = with your new=20 turbo.  I think its fairly clear from recent discourse on the topic = (as=20 well as a couple of incidents) that the A/r housing for the stock Mazda = turbo is=20 just too small for sustained aircraft use at high rpm.  The = modifications=20 of your new turbo appear increase  your A/r (or at least causes the = same=20 effect) by diverting more exhaust gas around the turbine blades. Also = the larger=20 compressor should also help keep the air temps down and airflow = up. =20
 
Its my opinion that the stock turbo = being water=20 cooled (which most aircraft turbos are not) really should do well as an = aircraft=20 turbo  - provided the A/r is considerably increased and a larger = compressor=20 wheel is used AND modest boost pressures are used.
 
Be good to see you in the air = again.
 
Best Regards and good luck
 
Ed Anderson
 
 
 
----- Original Message -----
From:=20 John=20 Slade
Sent: Tuesday, October 26, 2004 = 9:39=20 PM
Subject: [FlyRotary] N96PM = makes noise=20 once again

It's=20 been quiet here lately. Time to liven things up a = bit.
I'm=20 happy to report that my engine is once again making noise. Well, it = was making=20 noise before, but now it's good noise.
I=20 just started the rebuilt engine and taxied around on the ramp in = the dark=20 for 5 minutes or so. It seems to be running very well. I definitely = need to do=20 a bit of tuning, but it's very smooth and responsive. =
 
I'm=20 not sure if I mentioned this but there were a number of things wrong, = over and=20 above the damaged seal and rotor housing, any and all of which might = help=20 explain some of the problems I've had since first running the engine = over a=20 year ago.
 
1.=20 The rubber end plugs on the seals were missing - i.e. never=20 installed.
2.=20 One of the end seals had 30 thou clearance when it should have been 2=20 thou
3.=20 (This one is embarrassing). Bruce asked me if I was running premix. = When I=20 said yes, he asked why I'd unplugged the oil injection holes when I = removed=20 the engine. What injector holes?, I asked. Yep. Believe it or nor, the = oil=20 injector ports (next to the primary injector holes) had been unplugged = since=20 day one.
 
Taxi=20 testing and runups tomorrow.
 
John=20 Slade
 
 
 
 
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