Today's Message Index:
----------------------
1. 05:46 AM - Re: Swing the Compass (Beauford Tuton)
2. 07:39 AM - Texoma Ultralight Gathering (John Williamson)
3. 08:13 AM - Re: Texoma Ultralight Gathering (John Hauck)
4. 09:07 AM - For Ken Fackler (Ron or Mary)
5. 12:42 PM - Website Update (John Williamson)
6. 02:03 PM - Mark III late off ground. (Johann G.)
7. 02:47 PM - Re: Mark III late off ground. (John Hauck)
8. 02:50 PM - Replies (John Hauck)
9. 02:51 PM - Re: Mark III late off ground. (Richard Harris)
10. 03:04 PM - Re: Swing the Compass (Bob N.)
11. 04:40 PM - Re: Website Update (ronnie wehba)
12. 05:50 PM - Re: Website Update (Richard Pike)
13. 06:42 PM - Re: Swing the Compass (John Hauck)
14. 09:24 PM - [ Woody ] : New Email List Photo Share Available! (Email List Photo Shares)
15. 09:35 PM - Re: Mark III late off ground. (jerb)
16. 09:37 PM - Re: Mark III late off ground. (jerb)
Message 1
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Subject: | Re: Swing the Compass |
--> Kolb-List message posted by: "Beauford Tuton" <beauford@tampabay.rr.com>
Ian:
Swinging a compass is a tedious, but necessary little process that generates
the compass deviation card and cranks most, if not all, of the apparent
error out of the compass ... There is an excellent, very detailed, article
by Tony Bingelis on how to do it available on the EAA homebuilder's
website... it is a reprint of a Sport Aviation article from 1996....suggest
you hit that site and take a look at it. Appropriately enough, it is
entitled "Swinging the Compass..." I watched some guys do this to a
Cherokee using GPS about 3 weeks ago... first time I saw GPS used in the
process.... worked pretty well... We always used the old compass rose
painted on the ramp...
Good Luck...
Beauford
----- Original Message -----
From: "Ian Heritch" <iheritch@satx.rr.com>
Subject: Kolb-List: Swing the Compass
> --> Kolb-List message posted by: "Ian Heritch" <iheritch@satx.rr.com>
>
> Friends, the instructions with my new adjustable compass (Pegasus PG2A)
state that prior to adjusting I should "swing the compass". Of course they
don't explain how to swing the compass.
>
> So, is it as simple as rotating the aircraft on the ground one or more
times in one direction, and then rotating it again one or more times in the
opposite direction?
>
> Please advise.
>
> Ian Heritch
> San Antonio, TX Slingshot, 912
>
>
Message 2
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Subject: | Texoma Ultralight Gathering |
--> Kolb-List message posted by: "John Williamson" <kolbrapilot@attbi.com>
Hello Ed and Gang,
If anyone is around North Texas or Oklahoma on June 6-8, the DFW Lite Flyers
have a great Fly-In at Bowie Municipal airport (0F2), TX.
Here is their website address for more details:
http://www.dfwliteflyers.org/home.htm
I plan on being there on Saturday the 7th of June. If any one is interested
in the Kolbra, come at look at it.
John Williamson
Arlington, TX
Kolb Kolbra, N49KK, Jabiru 2200, 327 hours
http://home.attbi.com/~kolbrapilot
do not archive
Message 3
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Subject: | Re: Texoma Ultralight Gathering |
--> Kolb-List message posted by: John Hauck <jhauck@elmore.rr.com>
> I plan on being there on Saturday the 7th of June. If any one is interested
> in the Kolbra, come at look at it.
>
> John Williamson
John W/Kolbers:
After I read John's msg, I clicked on his web site
to see if he had posted any recent pics. For some
reason I checked his flight to Sun and Fun and Key
West. Was reading through and clicking on photos
in his narrative of the flight. Low and behold,
John spent the night in Crystal Springs,
Mississippi, I believe (without going back to
check) on his last night out. I can confirm his
statement that there was nothing at the airport.
I spent the last night of my MV flight at, you
guessed it, Crystal Springs, MS, Airport. Had
messed around a little in the Vidalia, LA, and
Natchez, MS, area looking for and finding an
ultralight airstrip depicted on the Sectional.
Turned out to be a good airstrip, but not used for
ULs in many years. After fuel at Natchez, I
decided to push on even though sun set was fast
approaching. The airport was supposed to be
lighted, but that is no guarantee. As I
approached the little town of Crystal Springs, I
still had not been able to pick out the beacon
(which it did not have) or the runway lights.
Once on a return flight from Oshkosh I had gambled
on getting into a small airport in Kentucky after
dark. Could not get the runway lights to come up
on arrival. Airport surrounded by lights that
ruined my night vision. Was not willing to gamble
on a landing with just my single landing light
when I could not see the field. A couple miles
from Crystal Springs I did pick out the runway
lights and shot my approach into a dead and
abandoned airfield. No telephone or humans around
the area. Luckily, my cell phone worked in the
middle of nowhere. I was able to contact Nell and
let her know where I was. As I was chowing down
on my MRE a 4 wheel drive pickup with more lights
than a 747 came down the little pig trail and
proceeded to blind me. I made a slight angry
gesture. He turned around and did not come back.
Luckily I had fuel for the remainder of the
flight. I slept on the tarmac under the wing
without any intruders to my space. Left Friday
morning at 0630 to discover that Paul Petty's
family compound and grass strip were only 30 or 40
miles away, right on my course line. Was hard to
roust everybody out of bed, but I did. Got my
three cups of Louisiana coffee in Mississippi.
The jolt was enough to get me the 200 miles or so
to Gantt IAP and home.
Sorry about getting so wordy, but I
did............. :-)
Happy Sunday morning,
john h
PS: Got my 12 rolls of film in the shop last
night. Will get them out Wednesday evening with
prints and CDs. Should have them on my index page
Wed night.
Message 4
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--> Kolb-List message posted by: "Ron or Mary" <whyme@vci.net>
Ken--Did you get the pictures I sent you? I hope I had the correct address.=0D
=0D
Ron Payne=0D
Do not archive.
Message 5
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--> Kolb-List message posted by: "John Williamson" <kolbrapilot@attbi.com>
Fellow Kolbers,
As promised, I just finished loading the photos of my last trip on my website for
your viewing.
If you find any broken links, I would like to here about them so they can be fixed.
To say the least, Monument Valley was great.
We, as in all Kolb flyers and builders, have an invitation to Fly-In to Montana
next spring which I am all in favor of. The flying area north of Missoula and
Helena was just splendid and I need to see it again.
John Williamson
Arlington, TX
Kolb Kolbra, N49KK, Jabiru 2200, 327 hours
http://home.attbi.com/~kolbrapilot
do not archive
Message 6
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Subject: | Mark III late off ground. |
--> Kolb-List message posted by: "Johann G." <johann@gi.is>
Hi list members.
My friend here in Iceland is having some difficulties with his Mark III.
When in the take off roll, the plane wants to stay on the ground even though
the speed is sufficient for take off.
The weight of balance is correct and the wing dihedral is set according to
the drawings.
He is using the Rotax 912 UL engine with IVO three blade prop. He had not
installed any kind of trim on the plane.
Does anyone on the list have the same experience with his Mark III?
Is the engine thrust line too low, i.e. wants to push the plane down and
hold it on the ground?
Could the wing angle of incidence be too low? Or the horizontal stabilizer
be positioned incorrectly?
Take a look at my friends plane. It is the yellow one.
http://www.gi.is/fis/misc.htm
Any help would be appreciated.
Best regards,
Johann G.
Iceland.
Message 7
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Subject: | Re: Mark III late off ground. |
--> Kolb-List message posted by: John Hauck <jhauck@elmore.rr.com>
Johann/Gang:
Tell your friend to come back off the power a
little once he reaches flying speed, say 50 mph.
Could be high thrust line and high power causing
the airplane not to want to fly off the ground. I
experienced this with the 912S on my first take
off.
Other tricks to fool it into flying are:
Let the tail rise pretty high through flying speed
then try to rotate.
Sometimes rolling the airplane up on one main with
ailerons near flying speed will encourage it to
take off and fly.
If it was mine, I would shorten the tail wheel
strut to aprx'ly 5 or 6 inches showing between the
tail wheel strut socket and the tail wheel
assembly. This will get the tail a little lower
and put a little more incidence in the wings.
If the above does not work, then I would recommend
putting it into a nice three point stance like old
Miss P'fer.
Let me know what happens, please.
john h
Message 8
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--> Kolb-List message posted by: John Hauck <jhauck@elmore.rr.com>
Folks:
If you have sent me an email and I haven't replied
it is because I have not waded deep enough into
this little mountain of mail that was waiting on
me when I got home, over 3,000 emails. The folks
on the SF List were supposed to put me TDY while
on the MV Flight, but the wires got crossed and
Brother Jim was put on TDY and I kept on getting
the normal daily flood of mail while away.
I am working my way through it little by little.
:-)
john h
Message 9
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Subject: | Re: Mark III late off ground. |
--> Kolb-List message posted by: "Richard Harris" <rharris@magnolia-net.com>
Johann, Its real hard to tell much about the set up of your friend's MK3
from the photos. However when I was building my MK3 ( with a 912) the old
Kolb Company told me to raise the front of the engine about 3/4" to get the
thrust line lower. Since that time I have talk to folks that know a great
deal about Kolbs. The general consensus seems to be to have the prop
perpendicular to the trailing edge of the wing.
Hope this helps..
Richard Harris
MK3 N912RH
Lewisville, Arkansas
----- Original Message -----
From: "Johann G." <johann@gi.is>
Subject: Kolb-List: Mark III late off ground.
> --> Kolb-List message posted by: "Johann G." <johann@gi.is>
>
> Hi list members.
>
> My friend here in Iceland is having some difficulties with his Mark III.
> When in the take off roll, the plane wants to stay on the ground even
though
> the speed is sufficient for take off.
> The weight of balance is correct and the wing dihedral is set according to
> the drawings.
> He is using the Rotax 912 UL engine with IVO three blade prop. He had not
> installed any kind of trim on the plane.
>
> Does anyone on the list have the same experience with his Mark III?
> Is the engine thrust line too low, i.e. wants to push the plane down and
> hold it on the ground?
> Could the wing angle of incidence be too low? Or the horizontal stabilizer
> be positioned incorrectly?
>
> Take a look at my friends plane. It is the yellow one.
> http://www.gi.is/fis/misc.htm
>
> Any help would be appreciated.
>
> Best regards,
>
> Johann G.
> Iceland.
>
>
Message 10
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Subject: | Re: Swing the Compass |
--> Kolb-List message posted by: "Bob N." <ronoy@shentel.net>
OK I'm back from Honey-Do City.
Swinging the mag compass in an Ultralight should be easy, especially if
you can corral a helper. But first a word on installation/location.
Anything magnetic affects the compass. Being as how Kolbs have a lot of
steel it is difficult to find a low-magnetic location that is viewable.
[funny story later]
First the reason it's easy is that you must align the vehicle's physical
heading (using the boom tube, for instance) with magnetic North. If you
are on an arpt with a compass rose, position the UL on the rose, with
the tail in approx. flying position. If it's windy, or the UL is
wobbling, wait a bit for calmer conditions. Helpful if you have a tail
stand/old box/etc to rest the tail on. If you were working with a
larger SpamCan it would be a lot more difficult with the tail situation.
If you have an electrical system, turn on those items that are usually
on in flight. (Other loads such as Transmit, landing lights, etc. will
affect the compass, but only when on). Depending upon the engine
installed, RPMs should be fast enough to show some charging current.
With all the foregoing, ck the compass reading for 360 degrees; using a
non-mag (brass or fiber) screwdriver set compass to 360, using the N/S
adj. Turn around heading mag South on the rose, and take out One Half
the error, using N/S adj. Now turn UL to mag 270 and take out One Half
the error, using the E/W adj. Now go to mag 90, repeating the above.
And then go back and do it again, taking out even smaller bites of
error. See how a UL is much easier to swing than a C182, or even a 150?
After the second or third iteration, check the compass at 30 degree
headings (or even 45s) and write down the mag rose headings vs the mag
compass headings. Make a teeny card and slip into frame under compass
face--if available. What you've done is to make a Table of compass
deviation--more later. And just for info, turn on some current hogs,
like Transmit, heated vest/gloves/boots/etc and note approximate
changes.
Now you almost done, except for being able to Stand Up Straight, AvCad
and give me the two mnemonic covering compasses! Sir: Can Dead Men Vote
Twice, and True Virgins Make Dull Company.
Compass +/-Deviation=Magnetic +/-Variation=True.
And True +/- Variation=Magnetic +/-Deviation=Compass
You get the value of Variation right from the sectional(s) covering your
route.
And that's the way it was in'42.
Oh, the funny? I was ferrying a 172 from CA to east coast in August. I'd
come down the hill from Walsenburg and on to Lamar. Had a couple frozen
7UPs on board. Filed IFR for the run to Dodge City. Enroute controllers
were good, giving some needed steers around big cell. So being bone dry,
got a can open without spraying entire cabin, took a drink of ice and
foam, set the can on the glare shield, and motored on. Center comes on,
saying I'm almost 10 deg off centerline and getting worse. Gave me
vector to intercept course. Later after a couple more slugs of ice---and
a knuckle rap from Center I figure that the steel 7UP can shouldn't be
on the glare shield, right beside the compass!
Bob N.
http://www.angelfire.com/rpg/ronoy/
Message 11
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Subject: | Re: Website Update |
SpamAssassin (Message larger than max testing size)
--> Kolb-List message posted by: "ronnie wehba" <rwehba@wtxs.net>
If the weather is nice, gonna try and bring my ultrastar.
----- Original Message -----
From: "John Williamson" <kolbrapilot@attbi.com>
Subject: Kolb-List: Website Update
> --> Kolb-List message posted by: "John Williamson" <kolbrapilot@attbi.com>
>
> Fellow Kolbers,
>
> As promised, I just finished loading the photos of my last trip on my
website for your viewing.
>
> If you find any broken links, I would like to here about them so they can
be fixed.
>
> To say the least, Monument Valley was great.
>
> We, as in all Kolb flyers and builders, have an invitation to Fly-In to
Montana next spring which I am all in favor of. The flying area north of
Missoula and Helena was just splendid and I need to see it again.
>
>
> John Williamson
> Arlington, TX
>
> Kolb Kolbra, N49KK, Jabiru 2200, 327 hours
> http://home.attbi.com/~kolbrapilot
>
> do not archive
>
>
Message 12
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Subject: | Re: Website Update |
--> Kolb-List message posted by: Richard Pike <rwpike@charter.net>
Great page! Really enjoyed all of it.
No broken links, but on page 13, KEFC airport is in SD, not SC.
Thanks for the show
Richard Pike
MKIII N420P (420ldPoops)
Do Not Archive
At 02:46 PM 6/1/03 -0500, you wrote:
>--> Kolb-List message posted by: "John Williamson" <kolbrapilot@attbi.com>
>
>Fellow Kolbers,
>
>As promised, I just finished loading the photos of my last trip on my
>website for your viewing.
>
>If you find any broken links, I would like to here about them so they can
>be fixed.
>
>To say the least, Monument Valley was great.
>
>We, as in all Kolb flyers and builders, have an invitation to Fly-In to
>Montana next spring which I am all in favor of. The flying area north of
>Missoula and Helena was just splendid and I need to see it again.
>
>
>John Williamson
>Arlington, TX
>
>Kolb Kolbra, N49KK, Jabiru 2200, 327 hours
>http://home.attbi.com/~kolbrapilot
>
>do not archive
>
>
Message 13
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Subject: | Re: Swing the Compass |
--> Kolb-List message posted by: John Hauck <jhauck@elmore.rr.com>
> Swinging the mag compass in an Ultralight should be easy, especially if
> Bob N.
Bob N/Gang:
Great explanation from an experienced aviator that
goes back a number of years. How's that sound?
Started to call you an old fart, which you would
understand coming from me, but was afraid some of
the other Kolbers might take offense to something
that comes naturally. :-)
Anyhow, let me add one thing I learned by accident
while swinging the compass on my Firestar many
years ago. In addition to everything that the
Grey Baron explained insure your control stick
(made of steel) is also in the cruise position of
flight when you swing the compass. I did not do
that for a long time, then one day when I was
swinging a new compass I pulled the stick back and
got a big swing in the compass indication. Yep,
when it was relaxed on the ground and forward,
closer to the compass, it was greatly affecting
its accuracy.
Nuff said,
john h
PS: Just got back from my first flight since I
landed back home Friday morning. Boy does that MK
III climb now that it is empty. Well, all except
the 7 MRE's in the nose I forgot to take out when
I unloaded. Last light flight was smooth and very
enjoyable. Got to fly with my buddies who were
all out and about doing the aviating thing this
Sunday evening. Life is great at those times, and
in the morning when I get up to a new day.
Message 14
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Subject: | [ Woody ] : New Email List Photo Share Available! |
--> Kolb-List message posted by: Email List Photo Shares <pictures@matronics.com>
A new Email List Photo Share is available:
Poster: Woody <duesouth@govital.net>
Subject: Thunderbird
http://www.matronics.com/photoshare/duesouth@govital.net.06.01.2003/index.html
o Main Photo Share Index
http://www.matronics.com/photoshare
o Submitting a Photo Share
If you wish to submit a Photo Share of your own, please include the
following information along with your email message and files:
1) Email List or Lists that they are related to:
2) Your Full Name:
3) Your Email Address:
4) One line Subject description:
5) Multi-line, multi-paragraph description of topic:
6) One-line Description of each photo or file:
Email the information above and your files and photos to:
pictures@matronics.com
Message 15
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Subject: | Re: Mark III late off ground. |
--> Kolb-List message posted by: jerb <ulflyer@airmail.net>
A few things quickly come to mind.
Assuming the wings incidence is correct, (should be checked in the normal
flying attitude as per the building manual), is the plane tail coming up OK?
Is the tail wheel assembly and/or gear legs standard so the proper "stance"
is obtained - a taller tail wheel or longer tail spring can raise the tail
or shorter gears legs lower the nose to decrease the wings angle of attack.
Is the tail horizontal stabilizer incidence set correctly?
Does the elevator have adequate up movement (that is the rear tip of the
elevator swinging upward when the stick is pulled back) - needs to be
rechecked.
If the tail is coming up, the plane sticks to the ground, the engine thrust
line may not be set correctly where it pushes the nose down with enough
force to over come the lift generated by the wing at the takeoff
speed. Front of the engine relative to the rear may be to low, may require
removing shims from the rear and adding shims to the front to raise the
front of the engine.
Have you performed a static ground run on the engine with the tail tied
down to verify the prop has been adjusted to properly load the engine?
Are you getting the speed required on take off roll, and how long is it
taking to reach it?
Are the prop blades installed in the correct from/back orientation? It may
be possible you have set some pitch in them (twisted them backwards) to
load the engine and produce some thrust but is may not be adequate to bite
the air.
Last, are the brakes dragging?
Regards,
jerb
Message 16
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Subject: | Re: Mark III late off ground. |
--> Kolb-List message posted by: jerb <ulflyer@airmail.net>
Relative to the top surface or bottom surface?
At 04:49 PM 6/1/03 -0500, you wrote:
>--> Kolb-List message posted by: "Richard Harris" <rharris@magnolia-net.com>
>
>Johann, Its real hard to tell much about the set up of your friend's MK3
>from the photos. However when I was building my MK3 ( with a 912) the old
>Kolb Company told me to raise the front of the engine about 3/4" to get the
>thrust line lower. Since that time I have talk to folks that know a great
>deal about Kolbs. The general consensus seems to be to have the prop
>perpendicular to the trailing edge of the wing.
>
> Hope this helps..
>
>
>Richard Harris
>MK3 N912RH
>Lewisville, Arkansas
>----- Original Message -----
>From: "Johann G." <johann@gi.is>
>To: <kolb-list@matronics.com>
>Subject: Kolb-List: Mark III late off ground.
>
>
> > --> Kolb-List message posted by: "Johann G." <johann@gi.is>
> >
> > Hi list members.
> >
> > My friend here in Iceland is having some difficulties with his Mark III.
> > When in the take off roll, the plane wants to stay on the ground even
>though
> > the speed is sufficient for take off.
> > The weight of balance is correct and the wing dihedral is set according to
> > the drawings.
> > He is using the Rotax 912 UL engine with IVO three blade prop. He had not
> > installed any kind of trim on the plane.
> >
> > Does anyone on the list have the same experience with his Mark III?
> > Is the engine thrust line too low, i.e. wants to push the plane down and
> > hold it on the ground?
> > Could the wing angle of incidence be too low? Or the horizontal stabilizer
> > be positioned incorrectly?
> >
> > Take a look at my friends plane. It is the yellow one.
> > http://www.gi.is/fis/misc.htm
> >
> > Any help would be appreciated.
> >
> > Best regards,
> >
> > Johann G.
> > Iceland.
> >
> >
>
>
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