Return-Path: Received: from imf21aec.mail.bellsouth.net ([205.152.59.69] verified) by logan.com (CommuniGate Pro SMTP 4.2b6) with ESMTP id 244864 for flyrotary@lancaironline.net; Tue, 06 Jul 2004 13:27:15 -0400 Received: from JSLADE ([209.214.14.20]) by imf21aec.mail.bellsouth.net (InterMail vM.5.01.06.08 201-253-122-130-108-20031117) with SMTP id <20040706172641.DBKT1776.imf21aec.mail.bellsouth.net@JSLADE> for ; Tue, 6 Jul 2004 13:26:41 -0400 From: "John Slade" To: "Rotary motors in aircraft" Subject: Second stock turbo bites the dust Date: Tue, 6 Jul 2004 13:26:40 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0000_01C4635C.DF5112F0" 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 V6.00.2800.1409 This is a multi-part message in MIME format. ------=_NextPart_000_0000_01C4635C.DF5112F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit Steve, Dave and anyone else running a stock single stage turbo - you might want to pay attention.... This morning I managed to break Rusty's turbo. I had been cruising at 11,000 ft with MAP 38, rpm 5100 and 175 kts TAS (about 155 IAS) for almost 2 hours when rpm suddenly dropped to 2500. A 1/4 turn of the mixture toward rich brought it up to 3500. Fuel pressure was 40psi, but I turned on the other pump anyway. Coolant temp dropped from 185 to 150 and EGT dropped from 1400 to 1000. Oil pressure was constant at 90PSI. I was 38 miles from home over a desolate little strip by Lake Okeechobee. I figured I could glide to either field from halfway, so I headed home. The engine ran consistently at reduced power. I maintained 11,000 to the halfway point, then began a gradual decent to arrive over the field at 6000. Once assured of the field I tried killing alternate sets of coils - both gave a decrease in rpm - and alternate sets of injectors - both killed the engine, (or reduced rpm enough that I didn't want to know). One [more] high & fast precautionary landing later and the plane was back in the hangar. I'd thought the new Radio Shack resistors on my secondary injectors might have given out, but no. A quick look up the exhaust pipe told the story. The compressor wheel is sitting at an odd angle blocking the outlet, just like last time. Apparently I was trailing a vortex of black smoke as I descended into the pattern. This probably helped keep the spam cans and whirly birds at bay while I took the active. :) One failure might be a bad turbo. A second one is enough to prove to me that the stock turbo just can't handle the punishment of continual boost. (just like Ed said it wouldn't :) I thought you guys running or planning to run the same turbo might like to hear the story as soon as possible. Regards, John (boost for all you're worth) Slade Now where's the phone number of that Ozzie guy???? -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Alex Madsen Sent: Tuesday, July 06, 2004 10:15 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Into the blue again :-) No they use solid state. I think it is 2GB Compact Flash. It says somewhere on their web site. You can get 2 GB CF cards and IDE adapters for them. Alex Madsen -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Finn Lassen Sent: Tuesday, July 06, 2004 7:27 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Into the blue again :-) Hmmm.... Doesn't the Blue Mountain and other glass panels use harddrives? I thought that the inside of a harddrive was sealed. Picking a random drive on Seagate's website: Environmental Operating Temperature (°C) 0 to 60 Nonoperating Temperature (°C) 70 to -40 Operating Shock (Gs) @ 2 msec 63 Non Operating Shock (Gs) @ 2 msec 350 Acoustics,Idle (Bels-typ sound power) 2.2 No mention of ambient pressure. Finn Ed Anderson wrote: Boy, now here is an example of what kind of information we have access to onthis list. Now that Ernest mentions it, yeah, I recall that the heads ofthe hard disk float on a cushion of air - but, I would never have thought toassociate altitude with hard drive crashes! Thanks Ernest. Ed Ed AndersonRV-6A N494BW Rotary PoweredMatthews, NC----- Original Message ----- From: "Ernest Christley" To: "Rotary motors in aircraft" Sent: Sunday, July 04, 2004 5:48 PMSubject: [FlyRotary] Re: Into the blue again :-) Haywire wrote: Message Today we flew for 6.3 hrs and everything was great again. Wecalibrated a few items including the electronic governor for the IVO prop. What a difference that makes. Also calibrated the PSS AOA and the Dynon AOA and they each are phenomenal tools. The engine is running great with nomajor issues at all. I do have a little tweaking to do on the low MAP table, but nothing urgent. Then only problem that I had today was that my Sony Vaio laptop doesn't seem to like high altitude. I have a small Vaio and havebuilt a place for it to mount easily and use it to display Jeppenson'sFlightMap in-flight GPS program. It works great until 10,300' where it would then display the blue screen and then reboot. After the 4th time it refused to reboot again so now I'm forced to use the system recovery disc and wipe the disc clean. I hate to think about all the files that I said I wouldback-up soon... :-(. My old laptop still works fine(using it now) so maybe I'll try it tomorrow. All hard drives have a spinning platter with a read/write head riding acushion of air just above it. Go to 10,300' and there isn't much of acushion left. The head will fall into the platter turning at 7500 or10000 rpm. I think you'll be lucky if the drive ever works again. -- http://www.ernest.isa-geek.org/"Ignorance is mankinds normal state, alleviated by information and experience." Veeduber Homepage: http://www.flyrotary.com/ Archive: http://lancaironline.net/lists/flyrotary/List.html Homepage: http://www.flyrotary.com/ Archive: http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_000_0000_01C4635C.DF5112F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Steve,=20 Dave and anyone else running a stock single stage turbo - you might want = to pay=20 attention....
 
This=20 morning I managed to break Rusty's turbo.  I had been cruising at = 11,000 ft=20 with MAP 38, rpm 5100 and 175 kts TAS (about 155 IAS) for almost 2 hours = when=20 rpm suddenly dropped to 2500. A 1/4 turn of the mixture toward rich = brought it=20 up to 3500. Fuel pressure was 40psi, but I turned on the other pump = anyway.=20 Coolant temp dropped from 185 to 150 and EGT dropped from 1400 to = 1000. Oil=20 pressure was constant at 90PSI.
 
I was=20 38 miles from home over a desolate little strip by Lake Okeechobee. I = figured I=20 could glide to either field from halfway, so I headed home. The engine = ran=20 consistently at reduced power. I maintained 11,000 to the halfway point, = then=20 began a gradual decent to arrive over the field at 6000. Once assured of = the=20 field I tried killing alternate sets of coils - both gave a decrease in = rpm -=20 and alternate sets of injectors - both killed the engine, (or reduced = rpm enough=20 that I didn't want to know).
 
One=20 [more] high & fast precautionary landing later and the plane = was back=20 in the hangar. I'd thought the new Radio Shack resistors on my secondary = injectors might have given out, but no. A quick look up the exhaust pipe = told=20 the story. The compressor wheel is sitting at an odd angle blocking the = outlet,=20 just like last time. Apparently I was trailing a vortex of black smoke = as I=20 descended into the pattern. This probably helped keep the spam cans = and=20 whirly birds at bay while I took the active. :)
 
One=20 failure might be a bad turbo. A second one is enough to prove to me that = the=20 stock turbo just can't handle the punishment of continual boost. (just = like Ed=20 said it wouldn't :)
 
I=20 thought you guys running or planning to run the same turbo might like to = hear=20 the story as soon as possible.
Regards,
John=20 (boost for all you're worth) Slade
 
Now=20 where's the phone number of that Ozzie guy????
 
 
 
 
-----Original Message-----
From: Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net]On Behalf Of Alex=20 Madsen
Sent: Tuesday, July 06, 2004 10:15 PM
To: = Rotary=20 motors in aircraft
Subject: [FlyRotary] Re: Into the blue = again=20 :-)

No they use = solid=20 state. I think it is 2GB Compact Flash.  It says somewhere on their = web site.=20 You can get 2 GB CF cards and IDE adapters for=20 them.

 

Alex=20 Madsen

 

-----Original=20 Message-----
From: = Rotary=20 motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Finn = Lassen
Sent: Tuesday, July 06, 2004 = 7:27=20 AM
To: Rotary = motors in=20 aircraft
Subject: = [FlyRotary]=20 Re: Into the blue again :-)

 

Hmmm.... = Doesn't the Blue=20 Mountain and other glass panels use harddrives?
I thought that the = inside=20 of a harddrive was sealed.
Picking a random drive on Seagate's=20 website:

Environmental
Operating Temperature (=B0C) 0 to=20 60
Nonoperating Temperature (=B0C) 70 to -40
Operating Shock = (Gs) @ 2 msec=20 63
Non Operating Shock (Gs) @ 2 msec 350
Acoustics,Idle = (Bels-typ sound=20 power) 2.2

 

 

 

 

 

 

 


No mention = of ambient=20 pressure.

Finn

Ed Anderson wrote:

Boy, now here is =
an example of what kind of information we have access to =
on
this list.  Now that =
Ernest mentions it, yeah, I recall that the heads =
of
the hard disk float on a cushion of air - but, I would never have =
thought to
associate altitude with hard drive =
crashes!  Thanks =
Ernest.
 
Ed
 
 
Ed Anderson
RV-6A N494BW Rotary =
Powered
Matthews, =
NC
----- Original Message ----- 
From: "Ernest Christley" <echristley@nc.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.n=
et>
Sent: Sunday, July 04, 2004 5:48 =
PM
Subject: [FlyRotary] Re: Into the blue again =
:-)
 
 
  =

Haywire wrote:
    
Message    =
Today we flew for 6.3 hrs and everything was great again. =
We
calibrated a few items including the electronic governor for the =
IVO
      =

prop.
  =

What a difference that makes. Also calibrated the PSS AOA and the =
Dynon
      =

AOA
  =

and they each are phenomenal tools. The engine is running great =
with no
major issues at all. I do have a little =
tweaking to do on the low MAP
      =

table,
  =

but nothing urgent. Then only problem that I had today was that my =
Sony
      =

Vaio
  =

laptop doesn't seem to like high altitude. I have a small Vaio and =
have
built a place for it to mount easily and use =
it to display Jeppenson's
FlightMap in-flight GPS =
program. It works great until 10,300' where =
it
      =

would
  =

then display the blue screen and then reboot. After the 4th time =
it
      =

refused
  =

to reboot again so now I'm forced to use the system recovery disc =
and
      =

wipe
  =

the disc clean. I hate to think about all the files that I said I =
would
back-up soon... :-(. My old laptop still works =
fine(using it now) so
      =

maybe
  =

I'll try it tomorrow.
      
All hard drives =
have a spinning platter with a read/write head riding =
a
cushion of air just above it.  Go to 10,300' and there isn't much of =
a
cushion left.  The =
head will fall into the platter turning at 7500 =
or
10000 rpm.  I think =
you'll be lucky if the drive ever works =
again.
 
-- =

http://www.ernest.isa-geek.org/<=
/A>
"Ignorance is mankinds normal =
state,
   =
alleviated by information and =
experience."
           &n=
bsp;           &nb=
sp;           =
Veeduber
 
    
 Homepage:  http://www.flyrotary.com/
 Archive:   http://lancai=
ronline.net/lists/flyrotary/List.html
<= PRE style=3D"MARGIN-LEFT: 0.5in">        = 
 
 
 
  =

 Homepage:  http://www.flyrotary.com/
 Archive:   http://lancai=
ronline.net/lists/flyrotary/List.html
<= PRE style=3D"MARGIN-LEFT: 0.5in">      = 
 
  =
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