Today's Message Index:
----------------------
1. 06:18 AM - Re: FireFly Is Ready To Go (Jack & Louise Hart)
2. 01:23 PM - Kit Planes (Paul Petty)
3. 04:58 PM - Fire Fly (John Hauck)
4. 05:26 PM - Re: Fire Fly (Don Gherardini)
5. 05:48 PM - Re: Fire Fly (John Hauck)
6. 09:54 PM - Re: Fire Fly (Bob Dalton)
7. 10:11 PM - Re: Kit Planes (Denny Rowe)
Message 1
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| Subject: | FireFly Is Ready To Go |
--> Kolb-List message posted by: Jack & Louise Hart <jbhart@ldd.net>
At 09:21 PM 3/25/04 -0600, you wrote:
>--> Kolb-List message posted by: "Christopher Armstrong" <tophera@centurytel.net>
>
>I think that it is reasonable for you to limit power not through rpm but
>through a throttle stop that can not be changed by the pilot in flight.
>Then you could re-pitch to get decent rpm even though you would be at
>reduced power. This would be the ultralight legal flight configuration for
>the aircraft. Limiting power with a throttle stop is just as reasonable as
>limiting speed by cranking in prop pitch. I think that as long as you can
>not change it in flight it would be acceptable to the feds. I don't think
>that you're at a dead end for 103-7 legality yet.
>
>
Topher,
You are correct. In my case it is kind of a catch 22 problem. If the hp is
available, one becomes greedy and I want to use the maximum hp that my
FireFly configuration allows. By limiting the engine rpm with increased
propeller pitch and assuming Simonini's performance curves are correct, one
can be sure that you are getting the 38 hp at 5,200 rpm. The Feds are
supposed to go by published data. So if I set the prop to top the engine
out at 6,000 rpm and then use a throttle stop to keep engine rpm from going
above 5,200, I will be getting much less than 38 hp out of the engine.
To get out of this dilemma and since the Feds are supposed to go with the
published data, it would be better to go with an under rated or untuned
engine. The MZ34 is rated at 27 hp and has a displacement of 313 cc. If
one puts a tuned exhaust on it and assuming it will perform as well as a
Simonini engine, it should crank out close to 38 hp. By reducing the
official engine hp to 27, one can legally decrease FireFly drag with
fairings on the landing gear and add a full enclosure. This coupled with
about fifty pounds less engine should let the FireFly top out at well over
60 mph on 27 hp.
If it sounds like I am trying to sell my self on changing engines, I am. I
have purchased an MZ34 and it is sitting on the counter of the family room.
I am getting older, and I am having trouble flying in the winter time with
my head sticking out in the breese. To stay warm, I wear a neck and head
socks under my soft flying helmet and an LL-Bean cold weather outfit. I can
stay warm but I can not turn my head but a few degrees, so on EAA Chapter
meeting flights I have to wallow about to see if there is other traffic in
the area. I hope to make a flip up and down short windshield that will
cover my head and to leave the sides open. I hope to fly the Simonini
engine through the summer and fall.
I have learned a lot from the Simonini engine. At first I was worried
whether it was a true 48 hp engine, but when I cut the prop and cranked in
the pitch, I found it was much stronger than the Rotax 447. I would never
go back to a piston ported engine. The reed valve engine is much more civil
and burns much less fuel. The FireFly is the best retirement toy I could
have or hope to have.
Jack B. Hart FF004
Jackson, MO
Jack & Louise Hart
jbhart@ldd.net
Message 2
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--> Kolb-List message posted by: "Paul Petty" <Lynnp@c-gate.net>
Kolbers,
Got my issue of kit planes today and I always scan the "completions" section first.
This month there are two Kolb's in there. Don's Firefly and Denny's Mark3.
Way to go guys!
Paul Petty
Building Ms. Dixie
Kolbra/912UL/Warp
do not archive
Message 3
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--> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
Hi Gang:
Amazing what one can discover on the Internet. I was looking at the
EAA e-Hot Line a minute ago. Discovered I was the owner of the 2003
Sun and Fun Grand Champion Ultralight. Not really. It is the Kolb
Aircraft Factory Firefly. I was lucky enough to get to fly it last
year. Somebody at EAA snapped a shot and it turned up in the EAA
Calendar as Miss April.
http://home.elmore.rr.com/jhauck/Flyins/kolb_800.jpg
Can't say anything about the pilot, but it is a very pretty little
airplane. If I owned one, I would have to keep it just like it is. I
like the 447 performance and the quick, agile way it flies. I will be
flying it again at Sun and Fun. I will pay particular attention to
its characteristics and see what I would like to change to suit me, if
I was going to build and fly one.
Take care,
john h
DO NOT ARCHIVE
Message 4
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--> Kolb-List message posted by: "Don Gherardini" <donghe@one-eleven.net>
Alright John!!!!
You get on any more of them calandars pard...and we gonna have to get you a
Bikini!!!
Don Gherardini
FireFly 098
http://www.geocities.com/dagger369th/my_firefly.htm
DO NOT ARCHIVE
Message 5
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--> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
get you a
| Bikini!!!
|
|
| Don Gherardini
Don G/Gang:
You ain't serious are you?
Heck, I have a problem now trying to get me and my beer gut in the MK
III.
Bikini's make me think about floats on the Firefly. Wonder how that
would work out. Be fun, I bet. And would be easier to handle at the
dock, etc., with the short wing span. Seeing my MKIII getting beat up
docking, especially in a windy situation, is one of the reason's I
have never persued floats. I can not imagine how difficult it would
be trying to get the aircraft to do what I wanted it to do in adverse
situations. A 30' X 24" boat that only weights about 1,000 lbs.
Take care,
john h
PS: Congrats on getting your and Denny Rowe's airplanes in Kitplane.
It is always nice to see your creation in an international
publication. I don't subscribe to Kitplane anymore, so have to rely
on the List to keep me current on what's happening.
DO NOT ARCHIVE
Message 6
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--> Kolb-List message posted by: "Bob Dalton" <wiserguy@comcast.net>
John and Gang,
The calendar shot makes a great Background for the laptop, thanks!
Bob Dalton
Manteca, CA
(do not archive)
----- Original Message -----
From: "John Hauck" <jhauck@elmore.rr.com>
Subject: Re: Kolb-List: Fire Fly
> --> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
>
> | You get on any more of them calandars pard...and we gonna have to
> get you a
>
> Don G/Gang:
>
> You ain't serious are you?
>
> Heck, I have a problem now trying to get me and my beer gut in the MK
> III.
>
> Bikini's make me think about floats on the Firefly. Wonder how that
> would work out. Be fun, I bet. And would be easier to handle at the
> dock, etc., with the short wing span. Seeing my MKIII getting beat up
> docking, especially in a windy situation, is one of the reason's I
> have never persued floats. I can not imagine how difficult it would
> be trying to get the aircraft to do what I wanted it to do in adverse
> situations. A 30' X 24" boat that only weights about 1,000 lbs.
>
> Take care,
>
> john h
>
> PS: Congrats on getting your and Denny Rowe's airplanes in Kitplane.
> It is always nice to see your creation in an international
> publication. I don't subscribe to Kitplane anymore, so have to rely
> on the List to keep me current on what's happening.
>
> DO NOT ARCHIVE
>
>
Message 7
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--> Kolb-List message posted by: "Denny Rowe" <rowedl@highstream.net>
> Kolbers,
> Got my issue of kit planes today and I always scan the "completions"
section first. This month there are two Kolb's in there. Don's Firefly and
Denny's Mark3. Way to go guys!
>
> Paul Petty
> Building Ms. Dixie
> Kolbra/912UL/Warp
>
>
> do not archive
>
Thanks for the Kudos Paul, shouldn't be long before we are checking out Miss
Dixie and Jim Bs Mk-3 in all the industry mags, I can't wait.
It makes me break out in a cold sweat to know that Don has already
stripped his awesome cover job off his fuselage in order to make his mods.
That dude has more intestinal fortitude than any ten people I know.
I have a few mods in mind already for my bird but not the salt it takes to
jump in right now, after spending all that time building I just want to
build some time in the logbook. :-I
Denny Rowe
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