Today's Message Index:
----------------------
1. 02:13 AM - Rudder Trim tabs for MIIIC w/ 912UL (John Bickham)
2. 04:50 AM - Re: Rudder Trim tabs for MIIIC w/ 912UL (JetPilot)
3. 05:29 AM - Re: Props and engine mount (JetPilot)
4. 06:39 AM - Re: sport pilot (Paul Petty)
5. 06:43 AM - Re: Rudder Trim tabs for MIIIC w/ 912UL (Paul Petty)
6. 06:55 AM - Re: Rudder Trim tabs for MIIIC w/ 912UL (John Hauck)
7. 06:57 AM - Re: Rudder Trim tabs for MIIIC w/ 912UL (John Hauck)
8. 07:49 AM - mkIII Trim Tab (John Hauck)
9. 08:04 AM - EAB (Ray)
10. 08:20 AM - Re: sport pilot (jb92563)
11. 08:29 AM - Re: EAB (Robert Laird)
12. 08:35 AM - Re: EAB (Richard & Martha Neilsen)
13. 08:38 AM - Re: Re: sport pilot (Robert Laird)
14. 08:54 AM - Re: Re: sport pilot (Richard & Martha Neilsen)
15. 09:13 AM - Re: sport pilot (jb92563)
16. 10:13 AM - Re: SUV (Craig Nelson)
17. 12:06 PM - Re: Rudder Trim tabs for MIIIC w/ 912UL (Paul Petty)
18. 12:21 PM - Re: Rudder Trim tabs for MIIIC w/ 912UL (Paul Petty)
19. 01:12 PM - Re: Re: Rudder Trim tabs for MIIIC w/ 912UL (John Hauck)
20. 03:22 PM - Weight and Balance (Paul Petty)
21. 06:21 PM - Prop Balance (Roger Lee)
22. 06:26 PM - Re: Re: Rudder Trim tabs for MIIIC w/ 912UL (David Key)
23. 06:30 PM - Re: Prop Balance (John Hauck)
24. 06:33 PM - Re: Re: Rudder Trim tabs for MIIIC w/ 912UL (John Hauck)
25. 07:42 PM - Re: Re: Rudder Trim tabs for MIIIC w/ 912UL (knowvne@aol.com)
26. 07:42 PM - Re: Re: Rudder Trim tabs for MIIIC w/ 912UL (Ed Chmielewski)
27. 08:32 PM - Re: Prop Balance (Roger Lee)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Rudder Trim tabs for MIIIC w/ 912UL |
Hello list,
Getting close to finishing up the repairs and modifications on my Mark IIIC. Finished
cutting and fitting new Lexan yesterday. Got some leftovers and started
thinking about rudder and aileron trim tabs. Not sure if there is a preference
between aluminum or Lexan.
Looked in the archives for sizes and angles.
>From John H, May 2000:
> The 21.75" X 3" tab bent 30 deg is too much trim. I will
> cut it down to 14.75" X 3" and test again. Most likely I
> will stay this dimension since I do not want to drill out
> anymore rivets, even though it is easy to drill the alum
> fabric rivets. I use a 2" lip to attach the trim tab to the
> ribs on left side of rudder.
>
Any pictures and descriptions would be much appreciated.
--------
Thanks too much,
John Bickham
Mark III-C
"Using my Repairman Certificate"
St. Francisville, LA
Do Not Archive
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103822#103822
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rudder Trim tabs for MIIIC w/ 912UL |
THe lexan looks a lot better, but it is much heavier than aluminum. Just be careful
not to get to much weight out on the end if the control surfaces, or you
can induce flutter. I used aluminum on my ailerons and elevators for this reason,
its also easier to bend if you need to adjust it.
Mike
--------
"NO FEAR" - If you have no fear you did not go as fast as you could
have !!!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103837#103837
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Props and engine mount |
HShack(at)aol.com wrote:
>
>
> I have one on my FSII; it replaced a Warp 3 blade. It's quieter than the Warp,
I like the scimitar shape & the bronze leading edge. I think it is much easier
on the gearbox.
>
> Howard Shackleford
> FS II
> SC
>
>
What kind of engine do you have on your FS II ? Did you notice any differences
in the performance between the Warp and the Kiev ?
Mike
--------
"NO FEAR" - If you have no fear you did not go as fast as you could
have !!!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103841#103841
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Thanks Ralph,Mike,
I plan to get the sport pilot ticket then go on to PPL and go from there. I have
36 hrs logged with a CFII and was just before doing my cross country solos before
we sold our cessna 150 and I got major involved in Ms. Dixie. As you may
or mat not know my father-n-law and bro-n-law are both corporate pilots and CFII's.
I personally have over 100 hrs in alot of different type aircraft but cont
consider myself "safe" without much more training. My plan is to finish this
Kolbra, then get back into training heavy while pops and the rest of the gang
do the flight testing and tweking. My brother-n-law will most likely get me
back current in a 172xp that he has access to. He is a good pilot but not the
brightest (mechanically), the other night his curiosity got the best of him and
he picked up the hose that goes to the static port and yes you guessed it "BLEW"
into it [Rolling Eyes] Dont think he hurt my instruments but it sure got
my attention!
do not archive
--------
Paul Petty
Kolbra #12
Ms Dixie
Final assembly!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103853#103853
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rudder Trim tabs for MIIIC w/ 912UL |
Hey John,
Wanna race to the finish? Im shooting for easter hehehe
do not archive
--------
Paul Petty
Kolbra #12
Ms Dixie
Final assembly!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103856#103856
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rudder Trim tabs for MIIIC w/ 912UL |
|
Morning John:
The description of my trim tab was a little confusing.
Overall dimentions are: 14.75" X 5"
.025 aluminum works well. I prefer it over lexan.
Bend a 2" lip on it 30 degrees.
Attach to rudder ribs with aluminum fabric rivets. I like the large
flange heads. I think I used three rivets per rib, and it covers
three ribs.
Attach trim tab to left side of rudder.
Works great.
john h
mkIII
PS: Got my center section parts primed yesterday. First time the
spray gun has been out since I rebuilt the left wing in 2000 and 2001.
Took me half a day to get set up. Turned out ok despite loads of
pollen, wind and dust. Had to paint outside under a tent fly. Also
primed the gear legs which are holding up well considering some of my
more spetacular landings. If I am smart, and I have my doubts, I will
wait until we have rain, which is finally forecast for this weekend,
before I try to shoot Pontiac Red Aerothane. Aerothane shows every
little bit of dust, pollen, lint, and other contamination.
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rudder Trim tabs for MIIIC w/ 912UL |
|
| John Bickham
John B:
If you still need a photo of trim tab I will see if I can get you one.
I have the fuselage in the basement, but the horizontal stabilizers
are taped up to the rudder and vertical stabilizer.
Let me know.
john h
mkIII
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
John B:
Here ya go, buddy.
One photo is worth 1,000 words. This should be good for 2,000.
john h
mkIII
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Is the EAB the same thing as an Experimental Light
Sport?
A regular experimental can only be flown by a
Regularly licensed Private Pilot or better.
A light sport license does NOT permit you to fly ANY
experimental only specifically designated Light Sport
experimental aircraft.
I also believe that as soon as these fat Ultralights
become Light Sport aircraft, they fall under federal
jurisdiction and hence the laws relating to them are
more severe.
For example: Vandalism to an ultralight is a local
police matter(mis-demeanor), but Vandalism against a
Federally recognized aircraft is a Felony with minimum
MANDATORY jail time.
So if you are have any "problems" you can send these
dummies away for a while.
I saw a lovely DC-3 being restored only to have been
graffittied one morning.....and the culprits when
caught will be living in a prison for at least 5 years
AND will have to save all their spray can money to buy
the DC-3 a new paint job.
Ray
Bored stiff? Loosen up...
Download and play hundreds of games for free on Yahoo! Games.
http://games.yahoo.com/games/front
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
NO !!!!
A Light Sport pilot can only fly an experimental actually registered as light sport
by the builder.
If you want to fly a regular non-light sport registered aircraft you will need
a Private Pilot Lic or better!!!
I have experimentals that meet the LSA requirements but can not fly them with a
Light sport lic until I register these aircraft as Light Sport Experimentals.
But A Private Pilot Lic does allow you to fly a LSA.
Ray
--------
Ray
do not archive
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103881#103881
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Nope, not true. Any aircraft (experimental or not) that falls within the
same envelope as a LSA can be flown by a Sport Pilot. The Sport Pilot still
has restrictions that don't apply to private pilot, such as flying at night,
but as long as they stay within the rules for their certificate, and they
are flying a plane that falls within the specs of an LSA (and the SPs
endorsements), they can fly it.
-- Robert
On 3/30/07, Ray <jb92563@yahoo.com> wrote:
>
>
> Is the EAB the same thing as an Experimental Light
> Sport?
>
> A regular experimental can only be flown by a
> Regularly licensed Private Pilot or better.
>
> A light sport license does NOT permit you to fly ANY
> experimental only specifically designated Light Sport
> experimental aircraft.
>
> I also believe that as soon as these fat Ultralights
> become Light Sport aircraft, they fall under federal
> jurisdiction and hence the laws relating to them are
> more severe.
>
> For example: Vandalism to an ultralight is a local
> police matter(mis-demeanor), but Vandalism against a
> Federally recognized aircraft is a Felony with minimum
> MANDATORY jail time.
>
> So if you are have any "problems" you can send these
> dummies away for a while.
>
> I saw a lovely DC-3 being restored only to have been
> graffittied one morning.....and the culprits when
> caught will be living in a prison for at least 5 years
> AND will have to save all their spray can money to buy
> the DC-3 a new paint job.
>
> Ray
>
>
> Bored stiff? Loosen up...
> Download and play hundreds of games for free on Yahoo! Games.
> http://games.yahoo.com/games/front
>
>
Message 12
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Ray
There are many Experimental Amateur Builts and a few light certified
aircraft that qualify as light sport and can be flown by someone with a
light sport license. I have my private license but choose to fly only light
sport so I don't have to get a 3rd class medical any more. I can at any time
get a medical if later chose to fly a spam can.
Rick Neilsen
Redrive VW powered MKIIIc
----- Original Message -----
From: "Ray" <jb92563@yahoo.com>
Sent: Friday, March 30, 2007 11:04 AM
Subject: Kolb-List: EAB
>
> Is the EAB the same thing as an Experimental Light
> Sport?
>
> A regular experimental can only be flown by a
> Regularly licensed Private Pilot or better.
Message 13
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
http://www.sportpilot.org/learn/final_rule_synopsis.html
" [The Sport Pilot rule] Allow[s] sport pilots to fly vintage and production
aircraft (standard airworthiness certificate) that meet the definition of a
light-sport aircraft."
"Aircraft with a standard airworthiness certificate that meet above
specifications may be flown by sport pilots. However, the aircraft must
remain in standard category and cannot be changed to light-sport aircraft
category. Holders of a sport pilot certificate may fly an aircraft with a
standard airworthiness certificate if it meets the definition of a
light-sport aircraft."
http://www.sportpilot.org/questions/afmviewfaq.asp?faqid=16
*Question :
*Can I fly an Experimental Amateur-Built (homebuilt) aircraft as a sport
pilot?
------------------------------
*Answer :
*Yes, as long as the aircraft meets the definition of a light-sport
aircraft. (Ref: 14 CFR Part 1.1)
On 3/30/07, jb92563 <jb92563@yahoo.com> wrote:
>
>
> NO !!!!
>
> A Light Sport pilot can only fly an experimental actually registered as
> light sport by the builder.
>
> If you want to fly a regular non-light sport registered aircraft you will
> need a Private Pilot Lic or better!!!
>
> I have experimentals that meet the LSA requirements but can not fly them
> with a Light sport lic until I register these aircraft as Light Sport
> Experimentals.
>
> But A Private Pilot Lic does allow you to fly a LSA.
>
> Ray
>
> --------
> Ray
>
> do not archive
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=103881#103881
>
>
Message 14
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
A aircraft does not need to be registered as a light sport to be flown by a
Light Sport Pilot. It only needs to qualify as a light sport. For example an
original J3 Cub can be flown by a light sport licensed pilot without any
registration changes.
I think the confusion started when some people tried to lower the maximum
gross weight on a certified aircraft to make it qualify as a light sport.
The FAA ruled that once certified a certified aircraft it can't be changed
to get it to qualify as a light sport.
Rick Neilsen
Redrive VW powered MKIIIc
----- Original Message -----
From: "jb92563" <jb92563@yahoo.com>
Sent: Friday, March 30, 2007 11:19 AM
Subject: Kolb-List: Re: sport pilot
>
> NO !!!!
>
> A Light Sport pilot can only fly an experimental actually registered as
> light sport by the builder.
>
> If you want to fly a regular non-light sport registered aircraft you will
> need a Private Pilot Lic or better!!!
>
> I have experimentals that meet the LSA requirements but can not fly them
> with a Light sport lic until I register these aircraft as Light Sport
> Experimentals.
>
> But A Private Pilot Lic does allow you to fly a LSA.
>
Message 15
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Wow, I stand corrected......thats great news.
I thought for certain that the FAA would make it tougher so I assumed the worst.
The key word there is "Qualify" as opposed to registered!
Thanks for clearing that up.
Ray
--------
Ray
do not archive
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103910#103910
Message 16
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
I love my SUV ford expedition I pull my 30' 3 axel trailer with my Kolb inside
and I can pull it up the grades from phoenix to Monument Valley 7000ft climb the
trailer weighs 7500 lbs and get 15 mpg doing it. And for around town ya can't
beet it
-----Original Message-----
From: owner-kolb-list-server@matronics.com [mailto:owner-kolb-list-server@matronics.com] On Behalf Of Chuck Stonex
Sent: Monday, March 26, 2007 8:14 AM
Subject: Re: Kolb-List: SUV
I have been looking at a Ford Expedition or equivilent that will handle off
road New Mexico adventures and haul my KOLB. I am hoping to be able to check
out some ghost towns and old settlements from the air and the ground if I
ever figure our what part of New Mexico I want to relocate to. I have had
about as much I.diots O.ut W.ondering A.round I need for this life time.
Chuck S
"Sport Utility Vehicle"... and it's just as you surmised. Used to be all
of them were based on truck frames/bodys/engines, but nowadays they are
downsizing them to be based on large car frames/bodys/engines, but still
their gas mileage is pretty bad. And you're right, most never leave the
roadways, but then most people buy them for the room or for the status, not
because they have to deal with off-road situations.
And, mea culpa... I drive a 10-yr-old Suburban that's about to cross over
the 200,000 mile mark, at about 15 mpg the whole way. But for a while I had
a business that required the space, so I don't feel so bad about it. Even
now, I can haul a riding lawn mower in the back of it, or tow my Kolb
trailer. (See, I got Kolb in here!).
-- Robert
do not archive
On 3/26/07, pat ladd <pj.ladd@btinternet.com> wrote:
large SUV ?>>
Hi all,
Let me expose my ignorance on yet another subject.
What is a SUV? I presume the V is for vehicle, the U is for Universal or
Utility. The `S` ?
I assume from general comments that they are big
gas guzzlers. In the UK we lump them all into a hated group called 4
X 4`s or `off roaders` in spite of the fact that many are only used for the
school run and never go off the blacktop at all.
The Chancellor has just increased the road tax for
such vehicles to 400 p. a. Hurrah!
If you want a chuckle check out Youtube and find
`Put a Yellow ribbon up your SUV` . Beware,
some comments may offend those of a mild nature.
Cheers
Pat
do not archive
= the many List utilities such as the Subscriptions page,
ronics.com/Navigator?Kolb-List" target="_blank" onclick="return
top.js.OpenExtLink(window,event,this)">
http://www.matronics.com/Navigator?Kolb-List
k" onclick="return top.js.OpenExtLink(window,event,this)">
http://forums.matronics.com
==========
_________________________________________________________________
Get a FREE Web site, company branded e-mail and more from Microsoft Office
The information transmitted is intended only for the person or entity to which
it is addressed and may contain confidential and/or privileged material. Any review,
retransmission, dissemination, or other use of, or taking of any action
in reliance upon this information by persons or entities other than the intended
recipient is prohibited. Ifyou receive this in error, please contact the sender
and delete the material from any computer.
Message 17
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rudder Trim tabs for MIIIC w/ 912UL |
Gang,
What is the cause or source of air that requires our planes to need a trim tab
on the rudder? Should I go ahead and make one for my Kolbra before it is flown
for the first time?
do not archive
--------
Paul Petty
Kolbra #12
Ms Dixie
Final assembly!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103950#103950
Message 18
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rudder Trim tabs for MIIIC w/ 912UL |
Mike,
I just re-read your post on trim tabs. You have them on your ailerons and elevators?
If so can you take some photos and post to the list or send me directly?
do not archive
--------
Paul Petty
Kolbra #12
Ms Dixie
Final assembly!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103951#103951
Message 19
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rudder Trim tabs for MIIIC w/ 912UL |
a trim tab on the rudder? Should I go ahead and make one for my Kolbra
before it is flown for the first time?
|
| --------
| Paul Petty
Paul:
Don't worry about trim tabs until after you thoroughly test your
airplane. Then, before you decide on what you what to correct and
how, make sure you fly a couple long cross country flights,
maintaining a heading and altitude. Your arm will tell you exactly
what you need and how much.
When it comes time to make a rudder trim tab, talk to John W and Mark
G, who have been flying their Kolbras for some time.
Roll correction can be made with Steven G's excellent tool that
changes the angle of attack of on wing.
Pitch correction can be made with elevator forced trim, and also flaps
which you can adjust to give you some reflex if you have a tendancy to
drop the nose.
Ov e4r the last 2,500+ hours, the tang that keeps the flap handle in
place at neutral flaps has worn approximately 1/8". The other day I
popped a 4130 tab behind the worn one, cut a new knotch init with a
5/32" chain saw file, and now I have flaps that are going to be a tad
reflexed, I hope. That'll help bring the nose up and maybe give me a
little more cruise speed.
john h
mkIII
Message 20
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Weight and Balance |
Hey Gang,
I am about ready to record the W&B of Ms Dixie. So I am asking questions from others
and gathering as much info as possible about the correct proccedre for this.
John W was so kind to send me a spread sheet on his results as well as Mark
G. on how he did his. Thanks guys! I have learned one thing for sure, one cant
ask to many questions from to many people to learn how to do a task. You only
need to be smart enough to do whats right for you so that you understand the
task at hand. In this case I also asked a good friend to help explain this
to me and thought I might share his thoughts with the list and future builders.
"Just wanted to send this after we talked.
The datum is any point on the airplane where all measurements will be
taken from, in your case the nose with a plumb bob to the floor.
An arm is simply a distance from the datum to another point where you
are taking a weight, ie, center of the main wheel axles and the center
of the tailwheel with the plane in the level flight position.
The moment is the multiplication of the weight at any point times the
distance aft of the datum to that point,ie, distance X weight = moment
add the total weight and the total moments then divide the total
weight into the total moment the resultant number is the CG or where
the airplane will balance if you put the fuse across a bar or
2x4.expressed in inches aft of the datum.
when you know the empty balance point you can do some weight and
balance calculations for different loadings using the same formula.
You will need to know the distance in inches of the center of the
front seat aft of the datum,center of the rear seat,center of the
fuel tank and any other place you might add or take off weight at some
time. like a cargo compartment.
Then make up a maximum weight you might ever put there, or use your
weight if you wish. do the weight aft of the datum x the distance to
the seat and the other two measuerments you did already using the
wheels. add all together and divide and you have the new CG with this
configeration. do it with full fuel @ 6 pounds per gallon for a full
tank and one with almost empty. if you stay in the envelope you r
gold.then do it for someone in the rear seat and do it the same way.
You will have to watch the useful load so you dont load over gross.
Please send $500,000.00 for this advice
Tom"
Hope this may help someone and if any see any holes in this as you can tell very
expensive advice have at it!
--------
Paul Petty
Kolbra #12
Ms Dixie
Final assembly!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103993#103993
Message 21
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Hi All, :D
Just had my Warp Drive prop balanced today. It was out .30" which is significant.
I had a post once before about balancing your props and I still highly recommend
it for the health and longevity of your tranny/engine. You blades may be
weighed to with in a few grams, but the few grams coupled with out of round spinners,
nuts, bolts washers any, the prop hub. Everything will add up and will
put you drive system out of balance. Cost was $200 and it took about 2 hrs.
You may not feel any vibration in a Kolb because of its control system unless it
is really bad, but it is still there.
Any prop that is just bolted on to an engine is most likely out of balance due
to all the mounting hardware. Even Rotax says your supposed to do a dynamic balance
of your prop. If you spent all that time building and all that time in the
air then this one item is worth the money.
--------
Roger Lee
Tucson, Az.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=104016#104016
Message 22
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rudder Trim tabs for MIIIC w/ 912UL |
Why does everyone have essentially the same sized trim tab the same
direction on the rudder. It seems like something on the plane could have
been designed differently.
Message 23
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Prop Balance |
Cost was $200 and it took about 2 hrs.
|
| --------
| Roger Lee
Roger:
Could you tell any difference in the engine and prop between before
and after balance?
john h
mkIII
Message 24
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rudder Trim tabs for MIIIC w/ 912UL |
| direction on the rudder. It seems like something on the plane could
have
| been designed differently.
David:
It is not the airplane, it is the prop blast and the way it hits the
tail section.
My mkIII is trimmed perfectly with the engine shut down and no trim
tab on the rudder. But when the power is brought up, the nose wants
to go left and the trim tab takes care of that.
john h
mkIII
Message 25
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rudder Trim tabs for MIIIC w/ 912UL |
Blame Rotax
They build the 912 so it spun the prop in the wrong Direction....8-)
Mark
-----Original Message-----
From: dhkey@msn.com
To: kolb-list@matronics.com
Sent: Fri, 30 Mar 2007 9:26 PM
Subject: Re: Kolb-List: Re: Rudder Trim tabs for MIIIC w/ 912UL
Why does everyone have essentially the same sized trim tab the same
direction on the rudder. It seems like something on the plane could
have been designed differently.
________________________________________________________________________
from AOL at AOL.com.
=0
Message 26
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rudder Trim tabs for MIIIC w/ 912UL |
Hi David,
The culprit is a combination of forces present in all single-engine
prop-driven aircraft (and most twins), too. They are:
Torque: The twisting force the engine exerts on the prop.
Spiraling slipstream: The 'corkscrew' effect of the airflow over
the aircraft structure, especially the tail group.
Gyroscopic precession: Think of the prop as a huge gyroscope, which
it is.
'P' factor: The uneven (asymmetric) loading of the prop, more
prevalent at slow airspeeds and high angle-of-attack.
The need for trim tabs isn't the fault of the designer. Maybe Sir
Isaac Newton.
The forces most prevalent in cruise are torque and spiral
slipstream. A good explanation for things like this is "The Pilot's
Handbook of Aeronautical Knowledge", AC 61-23(X?), I don't know what the
latest version is. You can order it from the GPO or Sporty's (sportys.com).
For those desiring even more punishment, "Aerodynamics for Naval
Aviators" should keep you occupied. Recommended only for those lacking any
type of social life.
Ed in JXN
MkII/503
----- Original Message -----
From: "David Key" <dhkey@msn.com>
Sent: Friday, March 30, 2007 9:26 PM
Subject: Re: Kolb-List: Re: Rudder Trim tabs for MIIIC w/ 912UL
>
> Why does everyone have essentially the same sized trim tab the same
> direction on the rudder. It seems like something on the plane could have
> been designed differently.
Message 27
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Prop Balance |
Hi John,
Not really in my stick, but my tranny could. I balanced it at 4800 rpm.
Typically you do a balance at the lower rpm cruise. I had to add two large washers
(1 1/8") on two different bolts on one side. Warp Drive or any prop MFG.
can match the weight of each blade, but they can't make it balanced on an engine.
Out of balance can cause bearing and seal leaks and faster wear on gears. You and
I have flown helicopters. When I did a balance on my main rotors what a difference.
Because of the large heavier rotor blades it was felt much more because
it produced a larger frequncey vibration. Our system is very small in comparison
and it produces a smaller frequency vibration which is harder to feel unless
it is really out of balance, but non the less there.
Out of balance is kind of like smoking cigeretts. It won't get you today, but it
will some day.
--------
Roger Lee
Tucson, Az.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=104036#104036
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|