Today's Message Index:
----------------------
1. 05:18 PM - Re: RV8A turbine engine (Gordon and Marge)
2. 05:49 PM - Re: Bendix Scintilla Magnetos & Lycoming 0-145 B2 (PERRY CHAPPANO)
3. 06:26 PM - Re: RV8A turbine engine (Archie)
4. 06:56 PM - A"REAL" Alternative 'engine' (John)
5. 07:21 PM - Re: A"REAL" Alternative 'engine' (Archie)
Message 1
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| Subject: | RV8A turbine engine |
--> Engines-List message posted by: "Gordon and Marge" <gcomfo@tc3net.com>
-----Original Message-----
From: owner-engines-list-server@matronics.com
[mailto:owner-engines-list-server@matronics.com] On Behalf Of Doug
Ritter
Subject: Engines-List: RV8A turbine engine
--> Engines-List message posted by: Doug Ritter <d.d.ritter@verizon.net>
I am dead-set on an
alternative engine for my RV8A project that does not include an "old
fashioned" gasoline piston engine. A small gas turbine is my number one
choice, a piston diesel is second and a rotary is third. Two choices
for
the turbine are an Allison 250 series T63 (250 to 300 hp) and the newly
under development ATP (Affordable Turbine Power 200+ hp) I have done a
lot
of product research and selected several vendors for the Allison at
around
$13k for a basic engine.
Doug Ritter
Alexandria, VA
703-360-5219
Doug: I can empathize with your desire for an alternative engine and
agree that a small gas turbine has its appeal. I have no specific
information on the Allison to which you refer but I do have some on the
-B17C of 420hp. The weight is good but it is a bit long at 45". The
killer is the fuel consumption: .657 Lbs/SHP/Hr at max power and .656 at
369hp normal cruise. At 90% it is .670 and at 75% (277hp)it is .715.
These are sea level numbers. With altitude the power tapers off and so
does the fuel flow but the flow at taxi settings is very high. For
example, at 12000' on a hot day the engine should produce 260hp and the
fuel flow is nearly 170 lb/hr. Turbines come into their own at higher
altitudes. My general impression is that as turbines get smaller the
fuel specifics get worse. Perhaps others on the list can amplify on
this.
I have placed myself on the delivery list for a DeltaHawk diesel because
it seems to be priced competitively, has good fuel specifics and
excellent altitude performance. It remains to be seen whether
deliveries will be made but I am optimistic. I think the rotary has a
lot to offer but have not warmed up to it because of the sound and
because of the throwaway lube system for the apex seals. Petty reasons
I'm sure but they are mine and so far at least, I'm sticking to them.
Affordable Turbine Power is a big question mark for me. At Oshkosh they
said they had partnered with an aerospace company that mfr'd turbo pumps
but their website says they are still seeking partners. The package
looks good but we need to see it proven and produced. Time will tell.
Good luck in your quest. If you get specifics on the T63 perhaps you
could post them to the list.
Gordon Comfort
N363GC
Message 2
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| Subject: | Bendix Scintilla Magnetos & Lycoming 0-145 B2 |
--> Engines-List message posted by: PERRY CHAPPANO <polestar@prodigy.net>
and now for the vintage crowd:
Anyone have any experience with Bendix Scintilla
magnetos and/or with upgrading the mags on a Lycoming
O-145 B2 engine; or adding a starter to that engine?
Thanks,
Perry Chappano
1940 Porterfield LC-65 - NC32372
2001 Zenith 601XL - N9961
Message 3
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| Subject: | Re: RV8A turbine engine |
--> Engines-List message posted by: "Archie" <archie97@earthlink.net>
> --> Engines-List message posted by: Doug Ritter <d.d.ritter@verizon.net>
>
> I am dead-set on an
> alternative engine for my RV8A project that does not include an "old
> fashioned" gasoline piston engine. A small gas turbine is my number one
>
> choice, a piston diesel is second and a rotary is third. Two choices
> for
> the turbine are an Allison 250 series T63 (250 to 300 hp) and the newly
> under development ATP (Affordable Turbine Power 200+ hp) I have done a
> lot
> of product research and selected several vendors for the Allison at
> around
> $13k for a basic engine.
> Doug Ritter
> Alexandria, VA
> 703-360-5219
Another opinion.
While the aforementioned comments are valid, dependent on
many factors, but with great variations
on personality and operating parameters. No problem here.
A stock, brand new small hp Wankel, (215hp) will run about $6k.
An early version is capable of that with some mods.
A 265hp is also available (used w/ std transmissions).
300hp with a 3 rotor Wankel is no problem, either.
Cu in vs cu in, the rotary will outdo just about any piston engine,
(hp wise), and most small turbines, and it thrives on rpm.
Simplicity in three basic moving parts, Simplicity and cost
at overhaul time, No specialized parts, and parts available
all over the country at reasonable prices.
How wonderful to see more people going to alternative
power plants.
The Lycosaurus type manufacturers have
brought this to serious contemplation by continuously
generating antique engines that burn oil, hardly make it to
TBO, and still can't get it right with continuous AD's which you
pay for, etc,etc.
Archie's Racing Service
Message 4
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| Subject: | A"REAL" Alternative 'engine' |
FROM_HAS_MIXED_NUMS
--> Engines-List message posted by: "John" <n1cxo320@salidaco.com>
Some fellows in (I think) California were building a rubber band powered
airplane which as I recall they had hoped to fly a distance of one mile with
self-powered takeoff....has anyone heard anymore of this attempt?
My fading memory says there was to be a human pilot aboard too...I saw some
photos of the huge rubber band with the 'engine' mounted on the back of a
pickup in some magazine a year or so back...any info?
John
Message 5
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| Subject: | Re: A"REAL" Alternative 'engine' |
--> Engines-List message posted by: "Archie" <archie97@earthlink.net>
> --> Engines-List message posted by: "John" <n1cxo320@salidaco.com>
>
> Some fellows in (I think) California were building a rubber band powered
> airplane which as I recall they had hoped to fly a distance of one mile
with
> self-powered takeoff....has anyone heard anymore of this attempt?
>
> My fading memory says there was to be a human pilot aboard too...I saw
some
> photos of the huge rubber band with the 'engine' mounted on the back of a
> pickup in some magazine a year or so back...any info?
>
> John
I vaguely remember that from a few years back.
I never heard anything, either.
Perhaps one of our more progressive aircraft manufacturers
bought them out before the market was flooded.
Archie
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