Today's Message Index:
----------------------
1. 04:06 AM - rv-9a flight characteristics (ivo welch)
2. 07:48 AM - Re: Yaw trim - Was (rv-9a flight characteristics) (Andy Karmy)
3. 11:00 PM - Fuel Vent Screens (Leland)
4. 11:22 PM - [ Jim Cone ] : New Email List Photo Share Available! (Email List Photo Shares)
Message 1
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | rv-9a flight characteristics |
--> RV9-List message posted by: ivo welch <ivo.welch@yale.edu>
hi chaps: noel (currently in oshkosh with n994ks) actually spent some
time to exactly calibrate the plane for straight-and-level flight.
before then, it had a very tiny problem. (of course, the rudder needs a
very big tab, which Noel put on for me, too.)
From Noel's email:
today I taped a "wedge" on the left side of the rudder. Was not quite
enough but what a difference! I think that there is still a tendency for
the aircraft to fly sideways even with the wing leveler on. I can tell by
setting the aircraft up strait and level at 120, wing leveler on and trimmed
to hold a coarse, ball centered, the compass is just not quite level.
When the compass is leveled, ball centered, there is a tendency for the nose
to drop and the aircraft to turn.
There are several things that can cause this.
1. engine thrust angle
2. wing wash (we can't do anything but set 1 flap down a little)
When we get the aircraft in for annual we will measure the wings and see if
that is a contributing factor. The thrust angle is a trial and error by
putting washers under some the engine mounts, this is actually easier than
most think.
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: Yaw trim - Was (rv-9a flight characteristics) |
--> RV9-List message posted by: "Andy Karmy" <andy@karmy.com>
This rudder trim subject is something that I never have understood yet... I see
all sorts of RV's with tabs and wedges on the rudder... Here's what I did.
When first flying mine with the wheel pants and leg fairings on I went from perfectly
centered to about half a ball off at cruise. I simply loosened up the main
gear leg fairing hose clamps, put just a bit of "english" on them to "steer"
in the direction of the needed correction and TaDa plane flys straight and
true with no tabs or wedges... What am I missing?
As for the roll adjustments, I adjusted the flaps & ailerons until the plane flew
level and all the surfaces were lined up. I do have a small amount of variation
between the left and right flap neutral positions.
- Andy
---------- Original Message ----------------------------------
From: ivo welch <ivo.welch@yale.edu>
>--> RV9-List message posted by: ivo welch <ivo.welch@yale.edu>
>
>
>hi chaps: noel (currently in oshkosh with n994ks) actually spent some
>time to exactly calibrate the plane for straight-and-level flight.
>before then, it had a very tiny problem. (of course, the rudder needs a
>very big tab, which Noel put on for me, too.)
>
> From Noel's email:
>
>today I taped a "wedge" on the left side of the rudder. Was not quite
>enough but what a difference! I think that there is still a tendency for
>the aircraft to fly sideways even with the wing leveler on. I can tell by
>setting the aircraft up strait and level at 120, wing leveler on and trimmed
>to hold a coarse, ball centered, the compass is just not quite level.
>
>When the compass is leveled, ball centered, there is a tendency for the nose
>to drop and the aircraft to turn.
>
>There are several things that can cause this.
>1. engine thrust angle
>2. wing wash (we can't do anything but set 1 flap down a little)
>
>When we get the aircraft in for annual we will measure the wings and see if
>that is a contributing factor. The thrust angle is a trial and error by
>putting washers under some the engine mounts, this is actually easier than
>most think.
>
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: | Fuel Vent Screens |
--> RV9-List message posted by: Leland <Federigo@pacbell.net>
Using Proseal, I glued aluminum window screen over my fuel vents as
suggested by Van's, but both sides have been damaged even though my
project is still in the garage. The dog's running under it may have
dislodged at least one of the screens. Does anybody have something more
durable to put over those vents? I've read that screen is needed to keep
insects from entering and plugging up the lines.
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: | [ Jim Cone ] : New Email List Photo Share Available! |
--> RV9-List message posted by: Email List Photo Shares <pictures@matronics.com>
A new Email List Photo Share is available:
Poster: Jim Cone <jimnbev@olypen.com>
Subject: Nice Straight Edge...
http://www.matronics.com/photoshare/jimnbev@olypen.com.07.29.2003/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
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! --
|