Today's Message Index:
----------------------
1. 07:25 AM - Re: fabric rivits (boyd young)
2. 09:35 AM - Re: Kolb-List Digest: Torque and "P" factor (William George)
3. 09:54 AM - test (robert bean)
4. 10:18 AM - Cockpit Labeling (Mike Pierzina)
5. 11:51 AM - John Hauck (Jim Hauck)
6. 11:56 AM - q (russkinne)
7. 07:33 PM - stick mod (robert bean)
8. 07:35 PM - [ Mike Pierzina ] : New Email List Photo Share Available! (Email List Photo Shares)
9. 09:06 PM - Tonights flight (Denny Rowe)
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: | Re: fabric rivits |
--> Kolb-List message posted by: "boyd young" <by0ung@brigham.net>
--> Kolb-List message posted by: herbgh@juno.com
Don't see them. Page 96,97 and 98. Latest catalog. They carried them
several years ago. Herb
do not archive
call them.... sometimes if have needed parts and not been able to find them
in the catalog.... gave them a call and it was in stock.
boyd
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: Kolb-List Digest: Torque and "P" factor |
--> Kolb-List message posted by: William George <wgeorge@mountainmeadowranch.com>
My colleague Dave has correctly stated the description of forces. I
would add perhaps one more.
The propeller swirl winds around and impacts the vertical stabilizer.
In a clockwise turning engine (viewed from the rear looking forward)
the swirl pushes the vertical stabilizer to the left. This cause the
nose to yaw right.
The ultimate effect of this was demonstrated one day when I had a
fairly strong crosswind from the right on takeoff with a passenger and
full tanks. This was with the 582 installed. I increased the throttle
at my normal rate and soon found that I had run out of left rudder and
the airplane was still turning right. I lowered the nose (raised the
tail) quickly and regained rudder authority. The solution was to
increase the throttle more gradually under those conditions, thus
getting aerodynamic breeze over the tail before the full force of prop
swirl.
Interestingly, the Verner 80 hp engine shows less of this tendency than
the 582 even though it has more power. I believe that this is due to
the fact that the Verner mounts several inches higher than the 582 and
less of the the prop swirl impacts the vertical stabilizer. Check the
vertical stabilizer for oil breather spattering and you will see that
nearly all of it is on the right side.
The Kolb requires left rudder on takeoff and climb. "P" factor
correction in a clockwise turning prop requires right rudder, a la GA
airplanes. Torque should be a non-issue in our Kolbs.
My two cents.
Bill George
Hawaii
Kolb Mk-3 Verner 1400 Powerfin
On Jul 28, 2004, at 8:56 PM, Kolb-List Digest Server wrote:
> Subject: Kolb-List: Torque and "P" factor
>
> --> Kolb-List message posted by: "David L. Bigelow"
> <dlbigelow@verizon.net>
>
>
> There seems to be some confusion here regarding torque and p-factor.
> Torque shows
> up at high power settings with very powerful engines on single engine
> center
> line thrust aircraft. Although the torque effect shows up as a
> rolling tendency,
> the proper control response is opposite rudder. An example of an
> aircraft
> that had a lot of torque was the A-1. Smaller pilots had trouble
> controlling
> it on takeoff because of the extreme amount of rudder required to keep
> it
> straight on the runway. Also, in the air, a rapid increase of
> throttle would
> tend to roll the aircraft.
>
> P-factor is caused by the thrust line of the aircraft not being in
> exact line with
> the airflow (vertically). The prop sees a different angle of attack
> on each
> side of the propeller disk. This produces more thrust on one side of
> the center
> line of the propeller disk than the other. Again it is yaw that
> translates
> to roll, and the proper trim is with rudder. The fix is to rotate the
> engine
> a degree or two in azimuth on the motor mount in a direction to
> counter the
> yaw. Usually, the adjustment is made to eliminate the yaw at cruise
> power setting.
> There will still be some asymmetric thrust at takeoff and climb
> settings,
> but it is much less noticeable than with no correction.
>
> I'd say from the description here, the effect is P-factor rather than
> torque.
> I've made this engine mount adjustment with two previous ultralights,
> and plan
> on doing the same with my 503 powered Firestar 2 when I finish it.
>
> Put a yaw string on your aircraft, and first eliminate the roll using
> aileron.
> You will see that the yaw string is not straight. This is what you
> will get
> by trimming it wings level with an aileron tab - the plane will always
> be flying
> in a slight slip. Try it again using rudder to eliminate the roll.
> You'll
> see that the yaw string is straight (or nearly so). You can put a tab
> on the
> rudder, but when you reduce power the trimmed rudder will produce a
> slip in the
> opposite direction. However, if the engine is mounted with the thrust
> line
> slightly off zero degrees azimuth, when you reduce power, the change
> in yaw is
> self-correcting. This whole thing is a "head scratcher", but a few
> sketches
> on a piece of paper will make it more clear.
>
> Dave Bigelow
> Kamuela, Hawaii
> FS 2
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 |
|
--> Kolb-List message posted by: robert bean <slyck@frontiernet.net>
Sorry fellers, technical difficulties, just a test
-BB do not archive
On Jul 29, 2004, at 10:01 AM, boyd young wrote:
> --> Kolb-List message posted by: "boyd young" <by0ung@brigham.net>
>
> --> Kolb-List message posted by: herbgh@juno.com
>
> Don't see them. Page 96,97 and 98. Latest catalog. They carried them
> several years ago. Herb
>
> do not archive
>
> call them.... sometimes if have needed parts and not been able to find
> them
> in the catalog.... gave them a call and it was in stock.
>
> boyd
>
>
> _-
> =======================================================================
> _-
> =======================================================================
> _-
> =======================================================================
> _-
> =======================================================================
> >
>
>
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 |
|
| Subject: | Cockpit Labeling |
--> Kolb-List message posted by: "Mike Pierzina" <planecrazzzy@lycos.com>
Hey Guys,
I would like to have my cockpit switches and controls "labeled" with engraved
aluminum or plastic....
But, for now...to pass inspection, I've come up with an idea that is
an easy and cheap solution....and it's right at YOUR fingertips...
I went to one of the programs on my computer....one where I could change
the "font" size and I typed the label, printed it, Cut it,
and with some clear tape, I taped it where it need labeling...which "SEALED" the
paper from weather...Here's some examples:
<- Closed THROTTLE Open ->
EIS
Warning
MASTER
ON
OFF
<-Closed
C
H
O
K
E
Open->
When you change the Font size, you can also find one that makes the lettering
"fatter" too.
Gotta Fly...
Mike in MN
P.S. I customized my "CHEAP" EAA log book...I sent pictures to the Matronics....If
you can't wait,let me know and I'll send them to you direct...
My Web Site:
http://www.geocities.com/planecrazzzy/Planecrazzzy.html
Sometimes you just have to take the leap
and build your wings on the way down...
Gotta Fly...
--
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 |
|
1.9 DATE_IN_FUTURE_03_06 Date: is 3 to 6 hours after Received: date
--> Kolb-List message posted by: "Jim Hauck" <jimh474@earthlink.net>
Hi Folks;
Just got off the phone with Bro John. He is still at the Helmricks homestead and
weather permitting he will take off for Dead Horse today, refuel and head south
along the haul road.
Plane and pilot doing fine. Pilot put on his thermal long johns today, 34 deg.
Jim Hauck
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 |
|
--> Kolb-List message posted by: russkinne <kinnepix@earthlink.net>
Any KOLBers in Chicago area? I'd like to look & gab next week --
do not archive.
Russ Kinne
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 |
|
--> Kolb-List message posted by: robert bean <slyck@frontiernet.net>
One of the Kolbers recently sent me a pic of his side grip for
the MkIII center stick. In the back of my mind I had considered
something similar, but figured it to be low on the priority list.
After looking at his, incentive was restored. Today I welded
up a little tee that will slip over the existing handle and held in
place with one through bolt. A curved piece of aluminum tube
will be riveted to that with the right angle to avoid whacking
the kneecaps. -BB, MkIIIc, 100% humidity, good day for
sawing, filing, welding, drinking beer and stumbling around
the workshop. do not archive
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 |
|
| Subject: | [ Mike Pierzina ] : 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: Mike Pierzina <planecrazzzy@lycos.com>
Subject: Customized Logbook
http://www.matronics.com/photoshare/planecrazzzy@lycos.com.07.29.2004/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 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 |
|
--> Kolb-List message posted by: "Denny Rowe" <rowedl@highstream.net>
Kolbers,
Was thinking about heading out to East Palestine Ohio this afternoon to visit KXP
owner Jay Carter, but was unable to get in touch with him.
Instead I wound up following my friend Mike Newman (Hurricane 503) up to his inlaws
farm just south of Franklin PA.
They have 500 ft mowed at the top end of a big field, as the mowed strip ends at
a big barn and a hill there are no go arounds.
Linda and I followed Mike in and I pulled my first real Mk-3 full stall landing
from a couple feet up, we could have stopped in half the length. Pretty good
confidence booster. I guess the trick to getting the Mk-3 to full stall without
dragging the tailwheel is to do em a couple feet off the deck. All this time
I have been trying to greese it on and keep dragging the tail. :-)
We got back 15 minutes after sunset and almost needed the airport lights.
What a good time even though the vis was only about 4 milesLater,
Denny Rowe, Mk-3, 2SI 690L-70, Powerfin F model, 53.1 hrs, Leechburg, PA
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! --
|