Today's Message Index:
----------------------
1. 05:03 AM - Re: cold flying (Ted C)
2. 05:29 AM - Re: Re: cold flying (ElleryWeld@aol.com)
3. 05:35 AM - Re: Re: cold flying (robert bean)
4. 05:59 AM - Staying warm and flying (Edward Steuber)
5. 06:30 AM - Re: Re: cold flying (bryan green)
6. 06:34 AM - Re: Re: cold flying (kfackler)
7. 06:39 AM - Re: Re: cold flying (kfackler)
8. 06:41 AM - Re: Staying warm and flying (Thom Riddle)
9. 07:11 AM - Mark III 582 fuel burn? (John Jung)
10. 07:12 AM - Re: Re: cold flying (John Cooley)
11. 07:48 AM - Re: Re: cold flying (Edward Chmielewski)
12. 07:54 AM - Re: Re: cold flying (Wayne T. McCullough)
13. 08:19 AM - Re: cold flying (ul15rhb@juno.com)
14. 10:04 AM - GAS LINE FREEZE (Bill Vincent)
15. 10:56 AM - Re: Mark III 582 fuel burn? (Kolbdriver)
16. 10:56 AM - Re: Mark III 582 fuel burn? (John Hauck)
17. 11:16 AM - Re: Mark III 582 fuel burn? (John Hauck)
18. 02:21 PM - Re: Mark III 582 fuel burn? (Richard Pike)
19. 03:00 PM - Re: Mark III 582 fuel burn? (John Hauck)
20. 03:11 PM - Re: Mark III 582 fuel burn? (John Hauck)
21. 03:14 PM - Mark III 582 fuel burn? (John Hauck)
22. 03:15 PM - ultrastar jig (ron wehba)
23. 04:26 PM - Re: heaters (BKlebon@aol.com)
24. 05:36 PM - Ms Dixie update (Paul Petty)
25. 05:54 PM - Re: Ms Dixie update (robert bean)
26. 07:19 PM - Help! (Dale Sellers)
27. 07:54 PM - Re: Help! (John Hauck)
28. 07:59 PM - Kolbra Update (John Williamson)
29. 08:00 PM - Re: Mark III 582 fuel burn? (Richard Pike)
30. 08:22 PM - Re: Mark III 582 fuel burn? (John Hauck)
31. 09:41 PM - Re: Mark III 582 fuel burn? (Richard Pike)
32. 10:28 PM - Re: Help! (Steve Garvelink)
Message 1
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--> Kolb-List message posted by: Ted C <trc1917@direcway.com>
well, it doesnt get that frigid down here in Bama Land but cold enough to make
me wonder how the ole Rotax will run under cold conditions. Kind of worry about
carb freezing and stuff but mostly cost seizers and the like. What do you
northern people do about that worry? Ted Cowan.
Message 2
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--> Kolb-List message posted by: ElleryWeld@aol.com
As far as carb icing as long as it is below freezing the moisture is already
frozen so You don't have to worry about that , and they run Rotax engines on
snowmobiles without a glitch and I am on my third plane with a rotax and
never had an engine out situation, as long as you can keep your self warm you
can still fly but you will want to add skis for the white stuff on the ground
In Maine
Original Firestar
Ellery Batchelder Jr
Message 3
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--> Kolb-List message posted by: robert bean <slyck@frontiernet.net>
Ted, if I knew what a "cost seizer" is I might worry about it. :)
Us northern people have had enough of this extreme recently.
Sorta like when you folks have 110+ F .... you only go out when
you're desperate for supplies.
When flying up here, warm boots and long underwear do the
job. Ski and snowmobile clothing are readily available.
Cold feet are the worst.
-BB do not archive
On 23, Jan 2005, at 8:03 AM, Ted C wrote:
> --> Kolb-List message posted by: Ted C <trc1917@direcway.com>
>
> well, it doesnt get that frigid down here in Bama Land but cold enough
> to make me wonder how the ole Rotax will run under cold conditions.
> Kind of worry about carb freezing and stuff but mostly cost seizers
> and the like. What do you northern people do about that worry? Ted
> Cowan.
>
>
Message 4
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| Subject: | Staying warm and flying |
--> Kolb-List message posted by: "Edward Steuber" <esteuber@rochester.rr.com>
Winter wonderland !
I hate that phrase ! We don't need any means of heating the cockpit up here
in Western NY because by the time you finish digging the airplane out , you
either have had a heart attack or you are so overheated from the exercise that
you can fly for an hour in your shirt sleeves . And if you do get to the point
where you are ready to fly , the weather may change in the blink of an eye
to white-out conditions . A real fun place to fly in January ! Can you say "IFR".
My youngest sons vehicle is buried up to the hood right now and is going to
get my full attention shortly. You Kolbers in the upper Midwest have lower temps
but I think we have more snow.....not bragging...moaning !
Ultrastar ED in Western NY (restoring wrecked CGS Hawk)
Do not Archive
Message 5
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--> Kolb-List message posted by: bryan green <lgreen1@sc.rr.com>
Robert bean wrote:
>--> Kolb-List message posted by: robert bean <slyck@frontiernet.net>
>
>Ted, if I knew what a "cost seizer" is I might worry about it. :)
>
>
>>Thats what occurs when I start to pull my wallet out for a new Rotex. :~)
>>
>>
Bryan Green
Firestar 377 BRS
>>
>>
>>
>
>
>
>
Message 6
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--> Kolb-List message posted by: "kfackler" <kfackler@ameritech.net>
>> well, it doesnt get that frigid down here in Bama Land but cold enough to
make me wonder how the ole Rotax will run under cold
>>conditions. Kind of worry about carb freezing and stuff but mostly cost
seizers and the like. What do you northern people do about
>> that worry? Ted Cowan.
I've had carb ice on several occasions. It's a real worry and something to
stay on guard about, particularly during descents. Unless you've rigged up a
carb heat arrangement, and I have not, there's not much else you can do.
When you suspect it, you begin working that throttle HARD.
As to cold seizures, I've never heard of anyone having trouble with it. Of
course, as we do even in hot weather, we watch and manage the temprs.
-Ken Fackler
Kolb Mark II / A722KWF
Rochester MI
Message 7
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--> Kolb-List message posted by: "kfackler" <kfackler@ameritech.net>
You are right, of course, that the Rotax runs well in cold weather and that
carb ice is rare, but to say that "as long as it is below freezing the
moisture is already frozen so you don't have to worry about that" is just
plain silly. That would mean that anytime the temperature is below freezing
that the relative humidity is zero, which is simply not true. RH is one of
the factors used to determine wind chill. Your statement would also preclude
the possibility of freezing rain. I have personally experienced carb ice,
both in Rotax and certificated engines, and in all but one instance the OAT
was below freezing.
----- Original Message -----
From: <ElleryWeld@aol.com>
Subject: Re: Kolb-List: Re: cold flying
> --> Kolb-List message posted by: ElleryWeld@aol.com
>
> As far as carb icing as long as it is below freezing the moisture is
already
> frozen so You don't have to worry about that , and they run Rotax engines
on
> snowmobiles without a glitch and I am on my third plane with a rotax and
> never had an engine out situation, as long as you can keep your self warm
you
> can still fly but you will want to add skis for the white stuff on the
ground
>
> In Maine
>
> Original Firestar
>
> Ellery Batchelder Jr
>
>
Message 8
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| Subject: | Re: Staying warm and flying |
--> Kolb-List message posted by: Thom Riddle <jtriddle@adelphia.net>
Unless you are young and/or really adventurous, most of us here in the
big snow areas, just dream about flying during the winter. The
Canadians, on the other hand, if they did not fly with the big snow and
sub-freezing temps, they wouldn't get much flying done. In fact many of
them just love this stuff. There is a large group of Challenger flyers
that have a ski-fly get-together on a the river/lake at Chateau
Montebello, Quebec in January. Unless there is a complete white-out,
they usually have a big turn out.
Check out this site:
http://www.challengerquebec.ca/english/Montebello2004/invit2004.html
Thom in Buffalo
do not archive
Message 9
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| Subject: | Mark III 582 fuel burn? |
--> Kolb-List message posted by: John Jung <jrjungjr@yahoo.com>
Mark III drivers,
I asked this question a few days ago and got no
response. Also, checked the archive for "gph" and only
found data from John Hauck.
How much does a 582 on a Mark III burn and at what
cruise speed?
I was flying with Arizona Dave last week and he was
burning 5 to 5.5 gph at 60 mph. It just seemed like
too much fuel for the speed and I was wondering if
there isn't a problem there somewhere. Is this nornal?
John Hauck did better when he had a 582, but he also
has the back enclosed.
John Jung
__________________________________
Message 10
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--> Kolb-List message posted by: "John Cooley" <johnc@datasync.com>
--> Kolb-List message posted by: robert bean <slyck@frontiernet.net>
Ted, if I knew what a "cost seizer" is I might worry about it. :)
BB and Gang,
I'm not sure why Ted used this term when talking about cold weather flying,
but I know it's what I get when I see the Rotax prices. :)
John Cooley
Message 11
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--> Kolb-List message posted by: "Edward Chmielewski" <edchmiel@mindspring.com>
Hi Ellery,
I agree about snowmobiles running in all weather, but sometimes their induction
systems are of a different
design. As far as no carb ice below freezing, I disagree. Carb ice can occur
if the air is cooled - or warmed - or
(compressed or expanded) to the point where carb ice forms. My guess is because
of the very short length of the
2-stroke induction system, we see few carb ice events. I've had carb ice form
in several aircraft below freezing,
however.
Ed in JXN
MkII/503
----- Original Message -----
From: <ElleryWeld@aol.com>
Subject: Re: Kolb-List: Re: cold flying
> --> Kolb-List message posted by: ElleryWeld@aol.com
>
> As far as carb icing as long as it is below freezing the moisture is already
> frozen so You don't have to worry about that , and they run Rotax engines on
> snowmobiles without a glitch and I am on my third plane with a rotax and
> never had an engine out situation, as long as you can keep your self warm you
> can still fly but you will want to add skis for the white stuff on the ground
>
> In Maine
>
> Original Firestar
>
> Ellery Batchelder Jr
Message 12
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--> Kolb-List message posted by: "Wayne T. McCullough" <blackbird754@alltel.net>
Good grief,
The other day I went out at 18 degrees to the airfield to see if the old
bird would run(532).....Took it awhile to warm up...LOL....and went around
the pattern, but EGTs would not come above 1,000 degrees.....In the NORMAL
weather it is set for 1,100 degrees right where it should be.......
40 miles north of SAVANNAH,GA.....
Stilll building Kolbra 4.......Flying a t-bird....currently..
Wayne
----- Original Message -----
From: "kfackler" <kfackler@ameritech.net>
Subject: Re: Kolb-List: Re: cold flying
> --> Kolb-List message posted by: "kfackler" <kfackler@ameritech.net>
>
> You are right, of course, that the Rotax runs well in cold weather and
> that
> carb ice is rare, but to say that "as long as it is below freezing the
> moisture is already frozen so you don't have to worry about that" is just
> plain silly. That would mean that anytime the temperature is below
> freezing
> that the relative humidity is zero, which is simply not true. RH is one of
> the factors used to determine wind chill. Your statement would also
> preclude
> the possibility of freezing rain. I have personally experienced carb ice,
> both in Rotax and certificated engines, and in all but one instance the
> OAT
> was below freezing.
>
> ----- Original Message -----
> From: <ElleryWeld@aol.com>
> To: <kolb-list@matronics.com>
> Subject: Re: Kolb-List: Re: cold flying
>
>
>> --> Kolb-List message posted by: ElleryWeld@aol.com
>>
>> As far as carb icing as long as it is below freezing the moisture is
> already
>> frozen so You don't have to worry about that , and they run Rotax
>> engines
> on
>> snowmobiles without a glitch and I am on my third plane with a rotax and
>> never had an engine out situation, as long as you can keep your self warm
> you
>> can still fly but you will want to add skis for the white stuff on the
> ground
>>
>> In Maine
>>
>> Original Firestar
>>
>> Ellery Batchelder Jr
>>
>>
>
>
>
Message 13
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
c78e0bf797d37e8e1aab4a8a4f7f1b7a6f1bb32f6f7f23474a6afa5b4f6bf3a3aeaee7e32e435a2ea73f5ae387837f1bb367aeb35737237a23232b0e
--> Kolb-List message posted by: "ul15rhb@juno.com" <ul15rhb@juno.com>
Flying during the winter months is great for us in Minnesota. We are having our
annual winter fly-in event on Lake Minnetonka the 5th of February. The Rotax's
run great and we are not concerned about carb ice. There were 3 guys that flew
503's 90 miles last weekend to a chili feed when it was -7F (they had full
enclosures with heat). If carb ice was a problem we would hear more about it.
With the open cockpit on mine, I draw the line at +20F. I guess I'm a whimp.
Ralph
Original Firestar
18 years flying it off the snow
-- Ted C <trc1917@direcway.com> wrote:
--> Kolb-List message posted by: Ted C <trc1917@direcway.com>
well, it doesnt get that frigid down here in Bama Land but cold enough to make
me wonder how the ole Rotax will run under cold conditions. Kind of worry about
carb freezing and stuff but mostly cost seizers and the like. What do you
northern people do about that worry? Ted Cowan.
Now includes pop-up blocker!
Only $14.95/month -visit http://www.juno.com/surf to sign up today!
Message 14
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--> Kolb-List message posted by: "Bill Vincent" <emailbill@chartermi.net>
Hi Ted and Gang:
In 1992 I crashed my T-Bird behind a house in town because of GAS LINE FREEZE;
the temperature was minus 5 degrees.
I know it is not recommended (and I do not recommended it) because of oil separation
but I add 1/2 ounce of Isopropyl alcohol to each gallon of gas when the
temperature is below freezing. I have been doing this since the 1992 crash and
I have not had any problems with my Firestar II Rotax 503
I have not had any problems with carb ice because the air is dry when it is cold.
Most carb ice happens around +68 degrees and high humidity.
I have not had trouble with cold seizures, but the engine will run hot in the winter
if you do not change the needle height.
You will also find that when you fly on skis that the brakes do not work. :-)
Bill Vincent
Firestar II
Upper Peninsula of Michigan (near Canada)
Do Not Archive
Message 15
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| Subject: | Re: Mark III 582 fuel burn? |
--> Kolb-List message posted by: "Kolbdriver" <Kolbdriver@bellsouth.net>
John,
Those numbers are about what I got with the 582 on my MKIII. I would burn
4.5 - 5 gph by not exceeding 60 mph. Around 5.5 at 65 mph.
Steven
> --> Kolb-List message posted by: John Jung <jrjungjr@yahoo.com>
>
> Mark III drivers,
>
> I asked this question a few days ago and got no
> response. Also, checked the archive for "gph" and only
> found data from John Hauck.
>
> How much does a 582 on a Mark III burn and at what
> cruise speed?
>
> I was flying with Arizona Dave last week and he was
> burning 5 to 5.5 gph at 60 mph. It just seemed like
> too much fuel for the speed and I was wondering if
> there isn't a problem there somewhere. Is this nornal?
> John Hauck did better when he had a 582, but he also
> has the back enclosed.
>
> John Jung
>
>
> __________________________________
>
>
Message 16
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| Subject: | Re: Mark III 582 fuel burn? |
--> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
> I asked this question a few days ago and got no
> response. Also, checked the archive for "gph" and only
> found data from John Hauck.
> John Jung
Hi John J/Gang:
Didn't mean to ignore you, but thought some of our current crop of Mark
III/582 flyers would responde to your request. Been about 12 years since I
have owned a flown my MKIII/582. However, when I was flying it, the 582
burned 5.0 to 5.5 gph at 5,800 rpm. That burn rate was acquired during a
long cross country many times during the short time I flew my MKIII with the
582.
I might add, this was the first engine I had experience with the oil
injector. First flight from Alabama to S&F 1993, I was concerned the oil
injection system was not working correctly when I landed at Perry, FL, for
my first refuel on that trip. Didn't use nearly as much oil as I thought it
should have, but it was correct amount. I flew this 582 about 224.0 hours
and enjoyed it performance. However, plug changes were frequent and it
burned a lot of gas which is a characteristic of a two stroke. I know there
are those on this List trying to make an economical engine out of two
strokes, but that is going against the design of the engine, drastically
reducing performance and reliability. These Rotax two strokes were designed
to get 75% power at 5,800 rpm. They are constant duty engines that perform
best at this power setting. Not necessarily economical, but the best
performance and reliability.
The 912 was a drastic change in power, economy, and reliability over the
582. Burned 4 gph at 5,000 rpm, which is 75% power, plugs lasted 200 hours,
and 100 hours between oil and filter changes.
The 912ULS is not nearly as economical an operator as the 912, but the extra
power is a kick in the ass and a ball to fly.
Take care,
john h
Message 17
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| Subject: | Re: Mark III 582 fuel burn? |
--> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
> Those numbers are about what I got with the 582 on my MKIII. I would
burn
> 4.5 - 5 gph by not exceeding 60 mph. Around 5.5 at 65 mph.
>
> Steven
Hi Steven/All:
I forgot to mention my cruise at 5,800 rpm was aprx'ly 80 mph.
john h
Message 18
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| Subject: | Re: Mark III 582 fuel burn? |
--> Kolb-List message posted by: Richard Pike <richard@bcchapel.org>
Sorry John, wasn't ignoring you, but since I prefer to run my engine slower
than most folks do, figured I would keep quiet on this one. I usually burn
about 4.5 gallons an hour at around 5400 rpm and 65 mph. At 5800 rpm and 80
mph I am burning around 5.5 gph.
Since I am seldom going anywhere of any distance, I tend to just poke
along, and with the MKIII's wide fuselage, that works for me.
The MKIII seems to be reasonably efficient up to about 65 mph, but after
that, it just takes a lot more power to push that wide body through the
air. There is no substitute for cubic inches, if you want to go fast, get a
912.
IMHO the key to fuel economy (and noise reduction) with a two stroke is to
get the airplane as efficient as possible so you can turn fewer rpm's for a
given airspeed. Easier said than done, still working on it.
Richard Pike
MKIII N420P (420ldPoops)
At 07:09 AM 1/23/2005 -0800, you wrote:
>--> Kolb-List message posted by: John Jung <jrjungjr@yahoo.com>
>
>Mark III drivers,
>
>I asked this question a few days ago and got no
>response. Also, checked the archive for "gph" and only
>found data from John Hauck.
>
>How much does a 582 on a Mark III burn and at what
>cruise speed?
>
>I was flying with Arizona Dave last week and he was
>burning 5 to 5.5 gph at 60 mph. It just seemed like
>too much fuel for the speed and I was wondering if
>there isn't a problem there somewhere. Is this nornal?
>John Hauck did better when he had a 582, but he also
>has the back enclosed.
>
>John Jung
>
>
>__________________________________
>
>
Message 19
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| Subject: | Re: Mark III 582 fuel burn? |
--> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
> Sorry John, wasn't ignoring you, but since I prefer to run my engine
> slower
> than most folks do, figured I would keep quiet on this one. I usually burn
> about 4.5 gallons an hour at around 5400 rpm and 65 mph. At 5800 rpm and
> 80
> mph I am burning around 5.5 gph.
>
> The MKIII seems to be reasonably efficient up to about 65 mph, but after
> that, it just takes a lot more power to push that wide body through the
> air. There is no substitute for cubic inches, if you want to go fast, get
> a
> 912.
> Richard Pike
Hi Richard/All:
I think I calculated correctly. If I did, you are more efficient at 80 mph
than at 65 mph.
65 / 4.5 = 14.4444
80 / 5.5 = 14.5454
From what I understand, most Rotax two strokes come on the pipe betwen 5,300
and 5,500 rpm, an area that would not be nearly as efficient as 75% power,
about max torque for most Rotax two strokes, IIRC.
I remember in the old days, or should I say young days of ultralighting, my
447 had a hell of a time trying to stay anywhere near 5,300 to 5,500 rpm.
It was like trying to balance on a beach ball, roll up or roll down, but did
not want to settle down in that area.
Isn't the two stroke more efficient after it comes up on the pipe than
before it gets there?
Also, at 65 mph, most MKIII's tend to squat, automatically pulling more
incidence into the wings, requiring more power to maintain airspeed and
altitude? I found the sweet spot for my MKIII is about 80 to 90 mph, 80, of
course, being the quietest and most comfortable. That's with the little
Rotax buzzing away at 5,000 rpm.
Take care,
john h Shivering in Alabama!!!
Message 20
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| Subject: | Re: Mark III 582 fuel burn? |
--> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
> 65 / 4.5 = 14.4444
>
> 80 / 5.5 = 14.5454
> john h Shivering in Alabama!!!
Hi All:
Probably, for the sake of clarity, added MPG to the above: 14.4444 mpg
14.5454 mpg
john h
hauck's holler, alabama
Message 21
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| Subject: | Mark III 582 fuel burn? |
--> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
> Probably, for the sake of clarity, added MPG to the above:
Hi All:
When I try to fix something I just make it worse. The above should have
read:
"Probably, for the sake of clarity, should have added MPG to the above:"
john h
Message 22
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--> Kolb-List message posted by: "ron wehba" <rwehba@cox.net>
had to sell my ultrastar a while back, anyone have any pictures of a jig which
a us was built from? have plans and i can build one, but am just asking/looking.
Message 23
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--> Kolb-List message posted by: BKlebon@aol.com
I would appreciate a look at your pictures. I have been thinking about the
type of set-up you describe. Thanks.
Message 24
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--> Kolb-List message posted by: "Paul Petty" <Lynnp@c-gate.net>
Hi fellow Kolbers,
Today was a good day in the hanger I managed to get the lift struts drilled and
in place and now she sits all pretty and ready for the next step! ........ Was
a good day to see her standing all proud and on her own...
http://www.c-gate.net/~ppetty/photos/P1160009.JPG on the rigs
http://www.c-gate.net/~ppetty/photos/P1230015.JPG on the floor!
http://www.c-gate.net/~ppetty/photos/P1230019.JPG hurry up and cover me !
http://www.c-gate.net/~ppetty/photos/P1230020.JPG getting there
http://www.c-gate.net/~ppetty/photos/P1230021.JPG
Will Uribe payed me a visit yesterday was good to see a fellow Kolb builder and
flyer hope he will send the pics we took!
who knows? we may have this bird in the air by this summer...........
Paul Petty
Building Ms. Dixie
Kolbra/912UL/Warp
Message 25
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| Subject: | Re: Ms Dixie update |
--> Kolb-List message posted by: robert bean <slyck@frontiernet.net>
Looking good Paul, time to glue those bedsheets on!
-BB, plowed out from the cabin in the woods
On 23, Jan 2005, at 8:43 PM, Paul Petty wrote:
> --> Kolb-List message posted by: "Paul Petty" <Lynnp@c-gate.net>
>
> Hi fellow Kolbers,
> Today was a good day in the hanger I managed to get the lift struts
> drilled and in place and now she sits all pretty and ready for the
> next step! ........ Was a good day to see her standing all proud and
> on her own...
>
>
Message 26
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--> Kolb-List message posted by: "Dale Sellers" <dsel1@bellsouth.net>
Can anyone tell me how to contact J-Bird? Do they have a website? I need some
UltraStar parts.
Dale Sellers
Georgia UltraStar
do not archive
Message 27
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--> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
I need some UltraStar parts.
|
| Dale Sellers
Dale/Gang:
Did you try a Google Search?
I did and found:
ENGINES:
A-1-used single cylinder.........................................$200
Rebuilt twin
30hp....................................................$390
New twin 40
hp.......................................................$595
50hp plus, 3
choices...............................................$750
Kawasaki, Rotax, Hirth, Cuyuna, Solo, Zenoah, other brands & types.
also propellers, reduction drives, carburetors, torque-tuned exhausts,
starters, & accessories.
J-Bird--Wisconsin * 1-262-626-2611
john h
DO NOT ARCHIVE
Message 28
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--> Kolb-List message posted by: "John Williamson" <kolbrapilot@comcast.net>
Since Ms Dixie can send an update, I figure I could do the same.
A simple engine swap has turned into putting new windows in and a new
instrument panel.
http://home.comcast.net/~kolbrapilot/100_3188.JPG
I hope to be back in the air before Sun'NFun 2005.
John Williamson
Arlington, TX
Kolb Kolbra, Rotax 912UL, 708 hours
http://home.comcast.net/~kolbrapilot
do not archive
Message 29
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| Subject: | Re: Mark III 582 fuel burn? |
--> Kolb-List message posted by: Richard Pike <richard@bcchapel.org>
At 04:57 PM 1/23/2005 -0600, you wrote:
>--> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
>
>Hi Richard/All:
>
>I think I calculated correctly. If I did, you are more efficient at 80 mph
>than at 65 mph.
>
>65 / 4.5 = 14.4444
>
>80 / 5.5 = 14.5454
Hadn't thought about it that way, but trading an extra gallon per hour for
another 15 mph is a good deal. Unless you are only going 35 miles or so,
and then it only amounts to a few minutes, and I'm up for the ride anyway.
Seems I don't get to fly as often lately, so when I do, might as well take
my time...
> >From what I understand, most Rotax two strokes come on the pipe betwen
> 5,300
>and 5,500 rpm, an area that would not be nearly as efficient as 75% power,
>about max torque for most Rotax two strokes, IIRC.
>
>I remember in the old days, or should I say young days of ultralighting, my
>447 had a hell of a time trying to stay anywhere near 5,300 to 5,500 rpm.
>It was like trying to balance on a beach ball, roll up or roll down, but did
>not want to settle down in that area.
That was my 532, it would run below 5300 or above 5600, but not in between.
The 582 doesn't care, it will run without hunting at any rpm you throw at it.
>Isn't the two stroke more efficient after it comes up on the pipe than
>before it gets there?
>
>Also, at 65 mph, most MKIII's tend to squat, automatically pulling more
>incidence into the wings, requiring more power to maintain airspeed and
>altitude?
Since I opened up the area above the cabin for free airflow, that has
gotten a bit better. Trying to gauge the wing's angle of attack against the
horizon, it seems like 65 is about where mine quits squatting and "gets up
on the step," but below that speed, you can really see that the wing is at
a very draggy high angle of attack compared to the faster speeds.
> I found the sweet spot for my MKIII is about 80 to 90 mph, 80, of
>course, being the quietest and most comfortable. That's with the little
>Rotax buzzing away at 5,000 rpm.
>
>Take care,
>
>john h Shivering in Alabama!!!
Looking at 11 degrees here in Tennessee, so tomorrow looks like a great day
to turn on the heater in the garage and build that RC model kit that came
in the mail Friday!
Richard Pike
MKIII N420P (420ldPoops)
do not archive
Message 30
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| Subject: | Re: Mark III 582 fuel burn? |
--> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
| >
| >80 / 5.5 = 14.5454
|
| Hadn't thought about it that way, but trading an extra gallon per
hour for
| another 15 mph is a good deal.
| Richard Pike
Richard P/Gang:
You did not comment on you previous statement about reduced efficiency
of the MKIII over 65 mph. The above figures kinda shoot holes in that
theory. I didn't keep a copy of your msg and it is not in the
archives yet, so I do not remember exactly what you had to say.
If I wanted to get real efficient with my MKIII, I could drop my
cruise to 70 mph at an engine speed of about 4,000 rpm. Don't know
what the fuel burn would be because I never fly that airspeed very
long. Well, I did too. Flew with a FSII for a long cross country at
about 3,800 rpm and 65 to 70 mph. Unfortunately, I did not compute
fuel burn.
The 912 should do a very good job of efficient flying at 4,000 rpm if
one has a lot of time to get where he is headed.
Take care,
john h
Message 31
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| Subject: | Re: Mark III 582 fuel burn? |
--> Kolb-List message posted by: Richard Pike <richard@bcchapel.org>
My apologies for the flawed theory. I guess my concept of efficiency is
that I experience diminishing returns as the airspeed and noise starts to
exceed 70. Obviously a MKIII flies well at 80+, but the smoother ride,
(never did learn to enjoy going fast in Tennessee's bumpy air) the quieter
engine and prop at 65, and the general sense that the airplane and I are
happy at that slower speed gives me a subjective impression that is very
satisfying, even though it is inefficient. Apparently it just seemed
efficient -
Richard Pike
At 10:20 PM 1/23/2005 -0600, you wrote:
>--> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
>
> | >65 / 4.5 = 14.4444
>| >
>| >80 / 5.5 = 14.5454
>|
>| Hadn't thought about it that way, but trading an extra gallon per
>hour for
>| another 15 mph is a good deal.
>
>| Richard Pike
>
>Richard P/Gang:
>
>You did not comment on you previous statement about reduced efficiency
>of the MKIII over 65 mph. The above figures kinda shoot holes in that
>theory. I didn't keep a copy of your msg and it is not in the
>archives yet, so I do not remember exactly what you had to say.
>
>If I wanted to get real efficient with my MKIII, I could drop my
>cruise to 70 mph at an engine speed of about 4,000 rpm. Don't know
>what the fuel burn would be because I never fly that airspeed very
>long. Well, I did too. Flew with a FSII for a long cross country at
>about 3,800 rpm and 65 to 70 mph. Unfortunately, I did not compute
>fuel burn.
>
>The 912 should do a very good job of efficient flying at 4,000 rpm if
>one has a lot of time to get where he is headed.
>
>Take care,
>
>john h
>
>
Message 32
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--> Kolb-List message posted by: "Steve Garvelink" <link@cdc.net>
J-Bird--Wisconsin * 1-262-626-2611
Not sure if this is what you are looking for!
SRGLINK
-----Original Message-----
From: owner-kolb-list-server@matronics.com
[mailto:owner-kolb-list-server@matronics.com] On Behalf Of Dale Sellers
Subject: Kolb-List: Help!
--> Kolb-List message posted by: "Dale Sellers" <dsel1@bellsouth.net>
Can anyone tell me how to contact J-Bird? Do they have a website? I
need some UltraStar parts.
Dale Sellers
Georgia UltraStar
do not archive
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