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Engine choice- O-200 or EJ 22
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chris(at)southernskies.ne
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PostPosted: Sat Nov 22, 2008 4:16 am    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

Not wanting to get the engine debate started again- just looking for experience and advice.

Have a Kitfox 5 project with 2 engines. Installed is a 100 HP Continental 0-200 with 1400 hours,in operating condition but far from perfect, weighs about 220 lbs. Engine needs to be removed for work on accessory case.

A second engine I have sitting here came out of a RAF 2000 Gyro- a Subaru EJ 22, carbureted, 130 HP with 200 hrs since new in excellent condition, weighs about 260 lbs with belt reduction.

The Continental runs a little hot, vibrates a bit, uses a lot of fuel,leaks some oil, occasionally fouls the plugs and parts are very expensive . Not anything unusual I have heard.

The Subaru I have on a teststand. It runs very smooth with normal temps (liaguid cooled) and just seems like a real nice package, sips the fuel and parts are readily available at the local auto parts store. Possible drawbacks are single Ignition and the higher weight due to the reduction drive. I have heard postive things about this engine in the Gyrocopter application.

Would anybody have some input on this potential selection?

Thank you,

Chris Bowles
Kitfox 5
Taylorsville, NC


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marwynne(at)verizon.net
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PostPosted: Sat Nov 22, 2008 5:33 am    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

I have a Champ with a Continental o-200.. I just rebuilt my engine. The
Continental O-200 is a very reliable engine. They have been running these
engines for years in a lot of Cessna's etc.. If you can stand the loss of
HP I would use it . It is a very simple engine to overhaul. I can't
speak to the ej-22. . I have a Model IV with a 912 . If I had a Model 5
I would put the o-200 on it.

---


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Beemer



Joined: 26 Aug 2006
Posts: 87
Location: Middle Georgia

PostPosted: Sat Nov 22, 2008 8:33 am    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

I don't know much about the Subie, and I've never flown one.

I am, however, having good luck on another auto-conversion on my KF Model 2.

Let me say this for your edification: I am a fan of dedicated aircraft
engines. I believe they serve their purposes well in a platform that can use
one.

My experience in using my auto-conversion over the last 18 months or so has
been very positive. I have learned a lot about engines and the associated
systems. It has not been without its trials and tribulations. Engineering
the install took quite a bit of time from flying, and the install costs a
bit more than expected (as is usually the case). I will say that many of the
delays were caused from outside sources. By that I mean that I new exactly
what I wanted to do, but could not seem to get outside folks, such as engine
builders, machine shops, and welders, to give me what I needed and/or
wanted.

Now that I'm flying the engine, the benefits are great. No one can match my
fuel burn, and my costs of operation are very low and affordable. So low, in
fact, I can afford to fly at will without endangering the family income.
Driving my car is the expensive option now.

In taking the route less traveled, I sacrificed several things. Namely,
outside support, weight, complexity, and the ever-present paranoia that
something will go wrong at any minute. I decided that those risks were
acceptable to me. You must decide those for yourself.

I don't concern myself much with the core engine. The case, crank, rods,
pistons, cam, etc. are as bulletproof as any other engine anywhere. The
things I worry about are the accessories not associated to the core engine,
i.e. the ignition, fuel pump, redrive, cam belt, etc. There are many single
points of failure, and no one has solved them all. I set out to watch the
accessories much closer than most would a certified aircraft engine. Again,
the sacrifice I made of going this route.

I think the overall key is to be completely aware of what you're getting
into, and be comfortable with as objective an opinion as you can come up
with. I think many who demand certified engines are just more comfortable
with what the industry gives them. They are not, at heart, willing to take
the risks of the unknown. I can understand that and accept that. I was
willing to take the risk, and I feel I have been rewarded up to this point.
I like to tinker, so it suits my attitude. If you don't like to experiment
to find your ideal solution to a problem, my advice is to stay with the
known, and be happy there. By the same token, I believe a lot of
auto-conversion installers become so enamored of their engine choice that
they are willing to bend the truth to suit their ideals. This is very bad.
It has been proven over and over again that auto engines are not the
complete answer to the aircraft engine debate. They have advantages, yes,
but they have disadvantages as well. Don't ignore this. There is no utopia
here, where everything is the way you WANT it to be.

Just be aware of the path ahead if you go with an auto-conversion. When
doing one, THERE IS NO SUBSTITUTE FOR ACCURATE INFORMATION!!!! PERIOD!
Beware of snake oil and outrageous claims. Know how every system on your
engine operates, what its limitations are, and be good at overcoming the
detail problems that occur. You are in uncharted territory here.

In summary, I like mine, but it is most definitely not for everyone to go
this route. I won't tell you to use one over the other.
Bradley


--


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Beemer
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Suzuki G10 three-banger
Middle Georgia
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JetPilot



Joined: 10 Jan 2006
Posts: 1246

PostPosted: Sat Nov 22, 2008 8:55 am    Post subject: Re: Engine choice- O-200 or EJ 22 Reply with quote

A properly maintained Continental 0200 will be much more reliable than a Subaru conversion. I would not even have to think 2 seconds about this choice, the Continental will be the more reliable, safer, and result in an airplane you are happy with and confident about flying. It sounds like you do need to rebuild your Continental though, I have owned two Continental 0200's and they have run very Smooth, Never fouled plugs, and fuel usage was comparable to any other 100 HP engine.

If you decide on the Subaru, you will spend much more money and time than you ever imagined on installation. Once it is installed, you will have many problems to solve. The more important thing is that when flying with the Subaru, you will be constantly wondering when it is going to quit on you, the reliability and safety will not be there. The minimum I would want in an auto conversion would be dual ignition and electronic fuel injection... So ask yourself do you want to be a mechanic and engine developer, or do you want to fly ? Is 30 hp more worth giving up safety and the constant headaches ?

Do yourself a favor, and do some research on this. Knowing how to use a search engine effectively is the key to getting the information you need. Search out Subaru here, and some of the other types of aircraft forums, you will be able to read for yourself the schit people have gone through to use this engine. A recent issue of Kitplanes commented that this engine should be limited to 100 HP to be reliable for aircraft use. The information and field reports are all there, the Continental is clearly the better engine choice.

Mike


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PostPosted: Sat Nov 22, 2008 9:30 am    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

I have flown both the Subaru in a Sparrow Hawk . the Subaru is an
ourstanding beautifully made engine but it has electronic ignition and
while flying off hours for the commercial Gyro at nite the alternator
went... that night I wish it had Mags !! 100 hp is plenty for you
Vixen

Dave

kf 2 582 E box


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Beemer



Joined: 26 Aug 2006
Posts: 87
Location: Middle Georgia

PostPosted: Sat Nov 22, 2008 10:18 am    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

Quote:
--> Kitfox-List message posted by: "JetPilot" <orcabonita(at)hotmail.com>

A properly maintained Continental 0200 will be much more reliable than a
Subaru conversion. I would not even have to think 2 seconds about this
choice, the Continental will be the more reliable, safer, and result in an
airplane you are happy with and confident about flying. It sounds like
you do need to rebuild your Continental though, I have owned two of them
and they have run very Smooth, Never fouled plugs, and fuel usage was
comparable to any other 100 HP engine.

I submit that a "properly maintained" auto conversion will be as reliable as any other "properly maintained" engine. It makes little difference who manufactures it, be it Continental, Subaru, Allison, or Briggs and Stratton. If it is "properly maintained", it will, in the overwhelmingly majority of cases, give its expected reliability. Case in point: The Rotax 582 is expected to give 300 hours of operation before requiring "proper maintenance". You all just pointed out time and time again that it is fully capable of doing this. If the Conti needs "proper maintenance" at 1600 hours TT for a bad jug, does this make it a better or worse engine? Did it give its expected lifetime before failure?

Quote:
If you decide on the Subaru, you will spend much more money and time than
you ever imagined on installation. Once it is installed, you will have
many problems to solve. The more important thing is that when flying
with the Subaru, you will be constantly wondering when it is going to quit
on you, the reliability and safety will not be there. The minimum I would
want in an auto conversion would be dual ignition and electronic fuel
injection... So ask yourself do you want to be a mechanic and engine
developer, or do you want to fly ? Is 30 hp more worth giving up safety
and the constant headaches ?

While it is possible to overspend on the install, finding an engine/airframe combo that has already been done can be of great benefit. I had none, so that's where my problems were. I had no example of any other combo to glean info from, especially what NOT to do. I survived it on common sense, and LOTS of research. In the end, I think I ended up ok, as I have few issues to deal with.

Mike, simply adding Fuel injection to your list is a step backward from your intended point. It is far more complex with many single points of failure. You need to think that point through some more. If I could add a second ignition that would provide a truly more reliable system, I would. It has been tried and can't be done on these applications. The outcome would end up being somewhat less reliable for many reasons. Single ignition is not to be feared on auto conversions. IMO, the dual ignition safety margin is largely a myth perpetuated by a truly uninformed few. That being said, I would not remove a mag from a Lyconti. And if I could get similar mag system for my install, I think I'd be interested in that, but only one.

FWIW, I don’t have "constant headaches".

Quote:
Do yourself a favor, and do some research on this. Knowing how to use a
search engine effectively is the key to getting the information you need.
Search out Subaru here, and some of the other types of aircraft forums,
you will be able to read for yourself the schit people have gone through
to use this engine. A recent issue of Kitplanes commented that this
engine should be limited to 100 HP to be reliable for aircraft use. The
information and field reports are all there, the Continental is clearly
the better engine choice.

The best choice for you will clearly be the one you believe in. Maintain a rubber band properly, and it will give years of good service.

Bradley
[quote][b]


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Beemer
KF2 (and now an M3!)
Suzuki G10 three-banger
Middle Georgia
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PostPosted: Sat Nov 22, 2008 11:08 am    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

On Sat, November 22, 2008 4:14 am, Southern Skies wrote:
Quote:


Not wanting to get the engine debate started again- just looking for experience and
advice.

Have a Kitfox 5 project with 2 engines. Installed is a 100 HP Continental 0-200 with
1400 hours,in operating condition but far from perfect, weighs about 220 lbs. Engine
needs to be removed for work on accessory case.

A second engine I have sitting here came out of a RAF 2000 Gyro- a Subaru EJ 22,
carbureted, 130 HP with 200 hrs since new in excellent condition, weighs about 260 lbs
with belt reduction.

The Continental runs a little hot, vibrates a bit, uses a lot of fuel,leaks some oil,
occasionally fouls the plugs and parts are very expensive . Not anything unusual I
have heard.

The Subaru I have on a teststand. It runs very smooth with normal temps (liaguid
cooled) and just seems like a real nice package, sips the fuel and parts are readily
available at the local auto parts store. Possible drawbacks are single Ignition and
the higher weight due to the reduction drive. I have heard postive things about this
engine in the Gyrocopter application.

Would anybody have some input on this potential selection?

Assuming that both engines are reasonable choices for the aircraft, considering -
weight, balance, power and resulting useful load then to use either engine you need to
know the costs in time and money to become operational.

Make a list of all the things needed to complete your project for both engines,
include estimates of cost and time in both calendar units and manhours for each task
and then determine the market value of the completed jobs for both engines. If you can
buy it already done for less than you're going to spend doing it, then don't undertake
the task at all.

The current problems with your 0-200 are correctable. Some of the symptoms are
related. Being hot, running rough and oil leaks go together. If the engine is tightly
cowled and cooling air is well directed with appropriate ducts and vanes that engine
is fine. I believe that overheating and subsequent expansion-contraction cycles is
what leads to the oil leakage.

If you use the other engine, then you've probably got a lot more work to do since it
amounts to redoing firewall foreward. In general the auto conversions find the
greatest problem with the reduction units rather than the engine itself. In my limited
experience with that EJ-22 is that the installation was so loud due to exhaust noise
that I found it unbearable. Apparently that is not necessarily the case but that
airplane builder couldn't get it muffled well enough in the space that was left to
work with.

So, in summary you have to do the budget for both options and the more refined your
estimates are, the better your comparisons will be. Always be aware of the market
value of what you're doing. If you can't do it yourself for less than you can buy it
completed, then you're doing it as a labor of love.

I am guessing that your estimate in time and dollars will point you to the Continental
as the favored selection. Even assuming a complete engine overhaul, carb, and
ignition. I'd replace those magnetos with current technology in your budget too.

--
Paul A. Franz, P.E.
PAF Consulting Engineers
Office 425.440.9505
Cell 425.241.1618


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Lynn Matteson



Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan

PostPosted: Sat Nov 22, 2008 11:18 am    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

I might have missed it, Bradley, but what "auto-conversion" are you
flying? I looked and looked, but I find no mention of what engine you
use in your KF Model 2. I admit I only looked in the present thread.

A general question for the group.....whatever happened to the push
for a "friendlier" group, where we put some info in our signatures so
that people like me who are short on memory don't have to hunt and
hunt to see what the poster is flying/building, powered by what engine.

Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, 591hrs
Sensenich 62x46
flying again after rebuild, and new Electroair direct-fire ignition
system

On Nov 22, 2008, at 11:31 AM, Bradley Webb wrote:

Quote:


I don't know much about the Subie, and I've never flown one.

I am, however, having good luck on another auto-conversion on my KF
Model 2.

Let me say this for your edification: I am a fan of dedicated aircraft
engines. I believe they serve their purposes well in a platform
that can use
one.

My experience in using my auto-conversion over the last 18 months
or so has
been very positive. I have learned a lot about engines and the
associated
systems. It has not been without its trials and tribulations.
Engineering
the install took quite a bit of time from flying, and the install
costs a
bit more than expected (as is usually the case). I will say that
many of the
delays were caused from outside sources. By that I mean that I new
exactly
what I wanted to do, but could not seem to get outside folks, such
as engine
builders, machine shops, and welders, to give me what I needed and/or
wanted.

Now that I'm flying the engine, the benefits are great. No one can
match my
fuel burn, and my costs of operation are very low and affordable.
So low, in
fact, I can afford to fly at will without endangering the family
income.
Driving my car is the expensive option now.

In taking the route less traveled, I sacrificed several things.
Namely,
outside support, weight, complexity, and the ever-present paranoia
that
something will go wrong at any minute. I decided that those risks were
acceptable to me. You must decide those for yourself.

I don't concern myself much with the core engine. The case, crank,
rods,
pistons, cam, etc. are as bulletproof as any other engine anywhere.
The
things I worry about are the accessories not associated to the core
engine,
i.e. the ignition, fuel pump, redrive, cam belt, etc. There are
many single
points of failure, and no one has solved them all. I set out to
watch the
accessories much closer than most would a certified aircraft
engine. Again,
the sacrifice I made of going this route.

I think the overall key is to be completely aware of what you're
getting
into, and be comfortable with as objective an opinion as you can
come up
with. I think many who demand certified engines are just more
comfortable
with what the industry gives them. They are not, at heart, willing
to take
the risks of the unknown. I can understand that and accept that. I was
willing to take the risk, and I feel I have been rewarded up to
this point.
I like to tinker, so it suits my attitude. If you don't like to
experiment
to find your ideal solution to a problem, my advice is to stay with
the
known, and be happy there. By the same token, I believe a lot of
auto-conversion installers become so enamored of their engine
choice that
they are willing to bend the truth to suit their ideals. This is
very bad.
It has been proven over and over again that auto engines are not the
complete answer to the aircraft engine debate. They have
advantages, yes,
but they have disadvantages as well. Don't ignore this. There is no
utopia
here, where everything is the way you WANT it to be.

Just be aware of the path ahead if you go with an auto-conversion.
When
doing one, THERE IS NO SUBSTITUTE FOR ACCURATE INFORMATION!!!! PERIOD!
Beware of snake oil and outrageous claims. Know how every system on
your
engine operates, what its limitations are, and be good at
overcoming the
detail problems that occur. You are in uncharted territory here.

In summary, I like mine, but it is most definitely not for everyone
to go
this route. I won't tell you to use one over the other.
Bradley


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PostPosted: Sat Nov 22, 2008 11:54 am    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

On Sat, November 22, 2008 8:55 am, JetPilot wrote:
Quote:


A properly maintained Continental 0200 will be much more reliable than a Subaru
conversion.

It's not the engine that is the weak point it is the reduction unit. There simply
haven't been as many of those made as the engines so the engineering, build, test loop
has had far fewer cycles on the reductions than on either engine.

Quote:
If you decide on the Subaru, you will spend much more money and time than you ever
imagined on installation.

Good point. However, I think that you can do a pretty reasonable up front estimate,
not perfect but sufficient to compare the two engine options he's considering.

Quote:
The information and field reports are all there, the Continental is clearly the
better engine choice.

I'm inclined to agree but I'd want to see the cost and labor estimates first. And I'd
like to see a more refined installed weight comparison too. I'd also like to know if
there were going to be big differences in frontal area drag and cooling drag. That
reduction unit and muffler on the Subaru might require a bigger, longer and heavier
cowling. The CG of the engine installation might be farther forward than that of the
O-200 and that might further reduce the useful load of the airplane. I'd nix either
choice if I thought I'd have to put ballast in the tail.
--
Paul A. Franz, P.E.
PAF Consulting Engineers
Office 425.440.9505
Cell 425.241.1618


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Beemer



Joined: 26 Aug 2006
Posts: 87
Location: Middle Georgia

PostPosted: Sat Nov 22, 2008 12:19 pm    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

Suzuki G10 three cylinder. You'll know it as the Geo Metro engine.

Bradley

[quote] --


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Suzuki G10 three-banger
Middle Georgia
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57_kid



Joined: 27 Aug 2006
Posts: 50

PostPosted: Sat Nov 22, 2008 1:06 pm    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

Chris
As I have been in your position I ended up going with the 0-200 (at the time
it was the better decision at least for me) the redrives were very expensive
at the time and maybe they still are I'm not sure what they cost at the
moment. The weight difference was a lot and if I would have went with the
subie my model 5 would have ended up almost being a single place aircraft.
That being said I would weigh out all my options and go with what you feel
most comfortable with. I have almost 300 hours on my model 5 with the 0-200
and with the exception of having to replace one of the magnetos it has been
a great combo.( used mid time motor to begin with ). but most important you
need to be satisfied with your decision as you will be the one flying it, so
get the facts and then try to make your decision.
Steve Eccles
0-200 powered
Model 5
N642SE

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PostPosted: Sat Nov 22, 2008 3:28 pm    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

Hi
Subaru engine was created for cars.Continental O200 for airplanes.
This engine (Cont O200) is very reliable, safe and like a swiss watch.

FD
Kitfox IV - O200 engine
www.dcubj3.com.br

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PostPosted: Sat Nov 22, 2008 4:01 pm    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

0-200 is a wonderful engine as is the Sub they are different A
water cooled engine has some real advantages... that's part of why
they last so long the 0 200 was designed when? I replace the engine
in the warrior a 4 cylinder carbed pushrod for only 24000 yikes....
as simple as it is its proven simple old technology there is a place
for both. Frankly for the RAF 2000 or sparrowhawk there prob is
none better.... perfect I really really like the subaru and trust
it. but for the KF I would prob opt for the 0200 ps at 45 hours a
jug needed replacement due to a siezed valve so nothing is perfect
its a machine! ( it was underwarranty Superior )
Lucky us we have good choices!

ps did u fly the RAF ?

Dave


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PostPosted: Sat Nov 22, 2008 4:56 pm    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

the 582 rotaxs is a good engine

One site has it all. Your email accounts, your social networks, and thp%26icid=aolcom40vanity%26ncid=emlcntaolcom00000001">AOL.com today![/b]
[quote][b]


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Lynn Matteson



Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan

PostPosted: Sat Nov 22, 2008 5:01 pm    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

It just occurred to me.....how many of the engines that we are
talking about can change just one cylinder if it goes belly up? My
Jabiru can, and the Conti's and Lyc's, and I'm guessing the Rotax's
(all of them?), but how about the auto engines? VW's, Corvairs,
yes....others? Tucker, yes. : )

Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, 591hrs
Sensenich 62x46
flying again after rebuild, and new Electroair direct-fire ignition
system

On Nov 22, 2008, at 7:00 PM, aerobatics(at)aol.com wrote:

Quote:


0-200 is a wonderful engine as is the Sub they are different A
water cooled engine has some real advantages... that's part of why
they last so long the 0 200 was designed when? I replace the
engine in the warrior a 4 cylinder carbed pushrod for only 24000
yikes.... as simple as it is its proven simple old technology
there is a place for both. Frankly for the RAF 2000 or
sparrowhawk there prob is none better.... perfect I really
really like the subaru and trust it. but for the KF I would prob
opt for the 0200 ps at 45 hours a jug needed replacement due to
a siezed valve so nothing is perfect its a machine! ( it was
underwarranty Superior )
Lucky us we have good choices!

ps did u fly the RAF ?

Dave



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PostPosted: Sat Nov 22, 2008 5:06 pm    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

I'm sorry, I am new to this email site, let me introduce myself: I'm flying a kitfox 2. I have 40 hours of flying time on it.
Chuck Mowery
in West Virginia Mountains

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Joined: 31 Oct 2007
Posts: 224
Location: Leander, TX

PostPosted: Sat Nov 22, 2008 5:13 pm    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

VW's can

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AZ_Ron



Joined: 18 Nov 2008
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PostPosted: Sat Nov 22, 2008 6:04 pm    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

Welcome Chuck!
I've been on and off the site for a couple of years... Wife is in
College to get her Masters...
Once she's out and in the workforce, then it's my turn... I'll be
getting my PPL and either a used KF, or
building one up. (Love to build, but hate to wait that long to fly!)

Ron
Cmflyboy12(at)aol.com wrote:
Quote:
I'm sorry, I am new to this email site, let me introduce myself: I'm
flying a kitfox 2. I have 40 hours of flying time on it.
Chuck Mowery
in West Virginia Mountains

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today!*
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PostPosted: Sat Nov 22, 2008 6:08 pm    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

thank you hope you get to flyin so,

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PostPosted: Sat Nov 22, 2008 6:11 pm    Post subject: Engine choice- O-200 or EJ 22 Reply with quote

hope you get to flyin soon,

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