Today's Message Index:
----------------------
1. 12:15 AM - Please Read - Who is "Matt Dralle" and What are "The Lists"...? (Matt Dralle)
2. 08:13 AM - Used O-470 Part Source (Mark & Lisa)
3. 09:45 AM - Re: Re:Crossover exhaust. (Hinde, Frank George (Corvallis))
4. 07:34 PM - Re: Re:Crossover exhaust. (Archie)
Message 1
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| Subject: | Please Read - Who is "Matt Dralle" and What are "The Lists"...? |
--> Engines-List message posted by: Matt Dralle <dralle@matronics.com>
Dear Listers,
Who is Matt Dralle and what exactly are these Lists? Well, I've been working in
the information technology industry for over 20 years primarily in computer
networking design and implementation. I've also had a rather extensive background
in web development and CGI design during this period.
I started the Matronics Email Lists back in 1990 with about 30 fellow RV builders
from around the world. Since that time, I have added 50 other kinds of aircraft
related Lists to the line up and numerous other List related services such
as the Archives and Search Engine just to name a few.
For the upmost in flexibility and reliability, I have chosen to run all of my own
servers here locally. Other support systems include a 1 Gigabit, fully switched
network infrastructure, a commercial-grade Netscreen firewall, a Barracuda
spam filter, a local T1 Internet router, and a commercial business T1 Internet
connection with static addressing.
The computer servers found here include two, dual processor Xeon Linux systems
dedicated to the email and web functions respectfully, and another P4 Linux system
serving as a remote storage disk farm for the archives, databases, and for
an on-line, hard drive-based backup system with 3.2 Terabytes of storage. This
entire system is protected by multiple commercial-grade uninterrupted power
supply (UPS) systems that assure the Lists are available even during a local
power outage!
I recently upgraded all of the computer racking infrastructure including new power
feeds and dedicated air conditioning for the room that serves as the Computer
Center for the Matronics Email Lists. Here's a new composite photo of the
List Computer Center following this Summer's upgrades!
http://www.matronics.com/MattDralle-ListComputerCenter.jpg
As you can see, I take running these Lists very seriously and I am dedicated to
providing an always-on, 24x7x365 experience for each and every Lister.
But building and running this system isn't cheap. As I've stated before, I don't
support any of these systems with commercial advertising on the Lists. It
is supported 100% through List member Contributions! That means you... and you...
and YOU!
To that end, I hold a List Fund Raiser each November and ask that members make
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Please make a Contribution today to support these Lists!
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Thank you!
Matt Dralle
Matronics Email List Administrator
Matt G Dralle | Matronics | PO Box 347 | Livermore | CA | 94551
925-606-1001 V | 925-606-6281 F | dralle@matronics.com Email
http://www.matronics.com/ WWW | Featuring Products For Aircraft
do not archive
Message 2
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| Subject: | Used O-470 Part Source |
--> Engines-List message posted by: "Mark & Lisa" <marknlisa@hometel.com>
Listers,
A friend has an airboat with an inop Cont O-470 installed. My thought is
rebuild shops might have parts unsuitable for aviation use that we can use
to repair this engine.
Any suggestions?
Thanks,
Mark
Message 3
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| Subject: | Re:Crossover exhaust. |
--> Engines-List message posted by: "Hinde, Frank George (Corvallis)" <frank.hinde@hp.com>
The big argument against insulating exh pipes is that the temp of the
pipes rises which leads to more expansion (lengthening of the pipe)
which makes it more prone to cracks.
In theory a wrapped exhaust is harder to see cracks which in theory at
leats makes it more likely to give carbom monoxide issues.
Having said that there are a number of wrapped exhausts around and I
don't have any data to tell how much longer an unwrapped pipe lasts
compared to a wrapped pipe.
For me a better way to get power would be to insulate the intake tubes
(on a Lycoming) as these are washed with hot cooling air from the
cylinders and heads...If the exh comes close to the colw I might wrap it
locally at that point.
Frank
-----Original Message-----
From: owner-engines-list-server@matronics.com
[mailto:owner-engines-list-server@matronics.com] On Behalf Of Archie
Subject: Re: Engines-List: Re:Crossover exhaust.
--> Engines-List message posted by: "Archie" <archie97@earthlink.net>
We use a thermal barrier tape wrap on all NASCAR, and some other racing
exhausts for several reasons.
The tape keeps the driver heat down by reducing radiation.
Keeps heat within pipes, which produces a minor increase in hp.
Protects other parts from excessive heat.
We buy in bulk, but small quantities are available from speed shops.
The only drawback is if used with mild steel tubing in humid areas, can
trap moisture and lead to premature corrosion.
Archie
==========================================
----- Original Message -----
From: <LessDragProd@aol.com>
Subject: Re: Engines-List: Re:Crossover exhaust.
> --> Engines-List message posted by: LessDragProd@aol.com
>
>
> Hi Hans,
>
> Massey Aircraft did try the aluminum tape. Unfortunately, they only
had
> about 1/8" of clearance between the exhaust pipe and the front of the
> cowl. It
> didn't help enough.
>
> Sometimes you just have to create your own room, to get the 1" of
> clearance
> so the aluminum tape will work. :-)
>
> Regards,
> Jim Ayers
>
> In a message dated 11/24/2005 2:06:19 PM Pacific Standard Time,
> hans@jodel.com writes:
>
> --> Engines-List message posted by: "Hans Teijgeler"
<hans@jodel.com>
>
> Sorry Jim, I had not read your email yet before sending out mine.
>
> Massey should really try my trick with that tape. It genuinely works,
and
> that for $3 and twenty minutes of work.
>
> Hans
>
>
>
Message 4
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| Subject: | Re:Crossover exhaust. |
--> Engines-List message posted by: "Archie" <archie97@earthlink.net>
Almost all endurance cars use an exhaust wrap for insulation and horsepower.
Most also use a stainless exhaust, or in some cases, inconel, so moisture
buildup
is not a factor regarding metallic oxidation.
I have always advocated "dump the sump" in a simple way of obtaining
additional power.
Have proven this some years ago when running induction outside the sump on
the dyno.
Archie
----- Original Message -----
From: "Hinde, Frank George (Corvallis)" <frank.hinde@hp.com>
Subject: RE: Engines-List: Re:Crossover exhaust.
> --> Engines-List message posted by: "Hinde, Frank George (Corvallis)"
> <frank.hinde@hp.com>
>
> The big argument against insulating exh pipes is that the temp of the
> pipes rises which leads to more expansion (lengthening of the pipe)
> which makes it more prone to cracks.
>
> In theory a wrapped exhaust is harder to see cracks which in theory at
> leats makes it more likely to give carbom monoxide issues.
>
> Having said that there are a number of wrapped exhausts around and I
> don't have any data to tell how much longer an unwrapped pipe lasts
> compared to a wrapped pipe.
>
> For me a better way to get power would be to insulate the intake tubes
> (on a Lycoming) as these are washed with hot cooling air from the
> cylinders and heads...If the exh comes close to the colw I might wrap it
> locally at that point.
>
> Frank
>
> -----Original Message-----
> From: owner-engines-list-server@matronics.com
> [mailto:owner-engines-list-server@matronics.com] On Behalf Of Archie
> To: engines-list@matronics.com
> Subject: Re: Engines-List: Re:Crossover exhaust.
>
> --> Engines-List message posted by: "Archie" <archie97@earthlink.net>
>
> We use a thermal barrier tape wrap on all NASCAR, and some other racing
> exhausts for several reasons.
> The tape keeps the driver heat down by reducing radiation.
> Keeps heat within pipes, which produces a minor increase in hp.
> Protects other parts from excessive heat.
> We buy in bulk, but small quantities are available from speed shops.
> The only drawback is if used with mild steel tubing in humid areas, can
> trap moisture and lead to premature corrosion.
> Archie
> ==========================================
> ----- Original Message -----
> From: <LessDragProd@aol.com>
> To: <engines-list@matronics.com>
> Subject: Re: Engines-List: Re:Crossover exhaust.
>
>
>> --> Engines-List message posted by: LessDragProd@aol.com
>>
>>
>> Hi Hans,
>>
>> Massey Aircraft did try the aluminum tape. Unfortunately, they only
> had
>> about 1/8" of clearance between the exhaust pipe and the front of the
>> cowl. It
>> didn't help enough.
>>
>> Sometimes you just have to create your own room, to get the 1" of
>> clearance
>> so the aluminum tape will work. :-)
>>
>> Regards,
>> Jim Ayers
>>
>> In a message dated 11/24/2005 2:06:19 PM Pacific Standard Time,
>> hans@jodel.com writes:
>>
>> --> Engines-List message posted by: "Hans Teijgeler"
> <hans@jodel.com>
>>
>> Sorry Jim, I had not read your email yet before sending out mine.
>>
>> Massey should really try my trick with that tape. It genuinely works,
> and
>> that for $3 and twenty minutes of work.
>>
>> Hans
>>
>>
>>
>
>
>
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