Return-Path: Received: from r1.name2host.com ([64.35.113.48] verified) by logan.com (CommuniGate Pro SMTP 4.2b2) with SMTP id 3180966 for flyrotary@lancaironline.net; Tue, 20 Apr 2004 14:13:02 -0400 Received: (qmail 66357 invoked from network); 20 Apr 2004 18:13:00 -0000 Received: from adsl-216-101-149-124.dsl.snfc21.pacbell.net (HELO rapunzel) (fly@bewersdorff.com@216.101.149.124) by r1.name2host.com with SMTP; 20 Apr 2004 18:13:00 -0000 From: "Marko Bewersdorff" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: Wanted - single stage turbo Date: Tue, 20 Apr 2004 11:07:59 -0700 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0104_01C426C7.BDCB4820" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 This is a multi-part message in MIME format. ------=_NextPart_000_0104_01C426C7.BDCB4820 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I got a custom unit for 1500 or 1700, I forgot, Rusty might now, too. Marko -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of John Slade Sent: Tuesday, April 20, 2004 10:58 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Wanted - single stage turbo Yes, please let me know, Steve. What's "reasonable" in the world of turbos? Regards, John -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Steve Brooks Sent: Tuesday, April 20, 2004 1:54 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Wanted - single stage turbo John, A couple of friends are building a Lancair with a 20B rotary. They bought a single stage turbo brand new for a pretty reasonable price. I believe that it is A Turbonetics, but I'll call him tonight and get more info. Steve Brooks Cozy MKIV 13BT - painting -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of John Slade Sent: Tuesday, April 20, 2004 1:38 PM To: Rotary motors in aircraft Subject: [FlyRotary] Wanted - single stage turbo Rotarians, Does anyone have a good second gen single stage turbo they want to sell? Failing that - can someone recommend a good supplier / rebuilder? Yes, you guessed it - I flew for almost an hour this morning, then fried the turbo. I'd noticed a bit of slack in the bearings, so was expecting to have to rebuild it anyway - just not quite this soon. The good news is that the failure mode was fairly benign. I was trying out the turbo at 5000ft and just passing through 170 kts making large circles over the field. The rpm dropped from about the 4500 I was using to 3500 and no amount of throttle would increase it from there. Below 3500 the engine ran almost normally, so I had enough power to climb if needed. It was maybe a tad rough, but not so's you'd notice. An observer says I put out a puff of white smoke, and was trailing a small amout of white smoke as I headed back in for a normal landing. In all I ran the engine for about 10 minutes after the turbo shaft broke. I lost about 1 pint of oil and the same of coolant through the collapsed bearings, so perhaps another 10 minutes or more would have been ok if the field had been further. The exhaust wheel was floating around in the wastegate housing, but too large to get through the hole, so all it did was block the exhaust a bit. I guess this is the "experimental" part of the exercise. :) John Slade Rotary Cozy IV (currently sans turbo) ------=_NextPart_000_0104_01C426C7.BDCB4820 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
I got=20 a custom unit for 1500 or 1700, I forgot, Rusty might now,=20 too.
 
Marko
-----Original Message-----
From: Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net]On Behalf Of John=20 Slade
Sent: Tuesday, April 20, 2004 10:58 AM
To: = Rotary=20 motors in aircraft
Subject: [FlyRotary] Re: Wanted - single = stage=20 turbo

Yes,=20 please let me know, Steve.
What's "reasonable" in the world of turbos? =
Regards,
John
-----Original Message-----
From: Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net]On Behalf Of Steve=20 Brooks
Sent: Tuesday, April 20, 2004 1:54 PM
To: = Rotary=20 motors in aircraft
Subject: [FlyRotary] Re: Wanted - = single stage=20 turbo

John,
A=20 couple of friends are building a Lancair with a 20B rotary.  = They=20 bought a single stage turbo brand new for a pretty reasonable = price.  I=20 believe that it is A Turbonetics, but I'll call him tonight and get = more=20 info.
 
Steve Brooks
Cozy MKIV 13BT - painting
-----Original Message-----
From: Rotary motors = in=20 aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of = John=20 Slade
Sent: Tuesday, April 20, 2004 1:38 = PM
To: Rotary=20 motors in aircraft
Subject: [FlyRotary] Wanted - single = stage=20 turbo

Rotarians,
Does anyone have a good second gen = single stage=20 turbo they want to sell?
Failing that - can someone recommend a = good=20 supplier / rebuilder?
 
Yes, you guessed it - I flew for almost = an hour=20 this morning, then fried the turbo. = I'd noticed a bit of slack in the = bearings, so=20 was expecting to have to rebuild it anyway - just not quite this=20 soon.
 
The good news is that the failure mode = was fairly=20 benign. I was trying out the turbo at 5000ft and just passing = through 170=20 kts making large circles over the field.  The rpm dropped = from about=20 the 4500 I was using to 3500 and no amount of throttle would = increase it=20 from there. Below 3500 the engine ran almost normally, so I had = enough=20 power to climb if needed. It was maybe a tad rough, but not = so's=20 you'd notice. An observer says I put out a puff of white smoke, = and was=20 trailing a small amout of white smoke as I headed back in for a = normal=20 landing. In all I ran the engine for about 10 minutes after the = turbo=20 shaft broke. I lost about 1 pint of oil and the same of coolant = through=20 the collapsed bearings, so perhaps another 10 minutes or more = would have=20 been ok if the field had been further.  The exhaust wheel was = floating around in the wastegate housing, but too large to get = through the=20 hole, so all it did was block the exhaust a=20 bit.
 
I guess this is the "experimental" part = of the=20 exercise. :)
John Slade
Rotary Cozy IV (currently sans=20 = turbo)
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