 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
jlatimer1(at)cox.net
Guest
|
 Posted: Sun Jul 11, 2010 6:39 am Post subject: First flight of N316JL - engine mount question. |
 |
|
I used the stock Zenith supplied Rotax bed mount. During the take off roll, I do have to hold right rudder pressure which I didn't expect. I was too busy with the fumes to really notice any trim changes as I changed throttle setting.
More things to do during the upcoming flights.
Jerry
flying at last
From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of Paul Mulwitz
Sent: Sunday, July 11, 2010 7:29 AM
To: zenith-list(at)matronics.com
Subject: RE: Re: First flight of N316JL - engine mount question.
Hi Jerry,
This message from Klaus Truemper made me wonder - did you mount your engine aligned with the fuselage centerline? Or, did you angle it one way or the other to deal with torque?
Paul
XL - doing upgrade
From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of Klaus Truemper
Sent: Sunday, July 11, 2010 4:15 AM
To: Matronics Zenith
Subject: Re: First flight of N316JL
Hi Jerry,
Congratulations!!
Left wing heavy: When you look out of the cockpit onto the left
wing, how far down must the aileron be relative to the trailing
edge, for wings level? This can be measured twice, once in level
flight, say at cruise speed, and once with engine at idle rpm and
best glide.
The test will give an idea of the effect of engine torque, and
also will tell how much is caused by the uneven weight distribution with
pilot in left seat. You could compare this with the numbers by other HDS builders.
I have not looked at this recently for my plane, but would guess that
for cruise, the left aileron is down 1 to 1 1/2 inches, and in glide about
half of that.
Best wishes,
Klaus
| Quote: | | http://www.matronics.com/Navigator?Zenith-List |
0123456789
0No virus found in this incoming message. Checked by AVG - www.avg.com 271.1.1/2995 - Release Date: 07/10/10 12:59:00 [quote][b]
| | - The Matronics Zenith-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Zenith-List |
|
|
|
| Back to top |
|
 |
flyadive(at)gmail.com
Guest
|
| Posted: Sun Jul 11, 2010 8:48 am Post subject: First flight of N316JL - engine mount question. |
|
|
Klaus:
Who cares what the deflection is in glide - That makes NO difference when you are FLYING S&L.
It is in S&L that you want the plane to be trimmed out.
And it makes NO difference when in glide... If it is off - What are you going to do? Wing Walk to
improve trim deflection?
Jerry:
May I add to the kudos - Congratulations - Ata-Boy.
The questions that should be prevalent are:
1 - Did you build the plane to spcs assuming that the specs are correct?
2 - Did you have Full / Equal Fuel in both tanks?
Personally I do not believe in Equal - I want Full!
Equal is a judgement call and full is a up-to- the-brim call.
3 - Is the panel mounted square - If so where is the Slip-Slide indicator?
Does is have the Ball Centered when in S&L?
If the Ball is off:
Check your rigging.
Check your rudder.
Check your Rudder trim tab.
4 - There is SOooooo much more to check as far as fixed and movable surfaces go...
But let's ASS UME there are no dimples, warps, wrinkles, or mis-matched parts...
Saw one plane with an aileron ... two - Ailerons installed up-side down. did not matter much until you went to turn.
5 - This is a BIGGIE - I do not recall what plane you are flying... Does it have FLAPS?
I worked on an RV-6 that kept rolling to the right. I check & measured everything. well everything
except the flaps till the very end.
I found that in deployment they were EQUAL.
At each three second deployment they were equal.
BUT - When fully retracted one was higher than the other.
They did not seat EQUALLY in the retracted position.
Fuselage was off and BONDO was used BUT not SMOOTHLY or EQUALLY.
Fixed that and problem solved.
O! One other thing I checked and if you can do so...
6 - Do a W&B on EACH WHEEL. I found that there was a 50 Lb difference on the mains.
SOOoooo here is another test/solution:-
7 - You want the trim tabs to as straight back as possible to reduce parasitic drag.
IF you find a weight difference that can be corrected GREAT!
If you can't think about adding a SMALL amount of weight to the lifting wing tip.
This is a last on a list of things to try.
8 - I hate to say this - Because we are ALL such GREAT pilots.
But, are your skills up to holding a plane S&L for 5 minutes to verify the rolling tendency?
Could the roll be pilot induced?
HELL - You just spend most of the past few years BUILDING and not FLYING!
My old instructor (73) and friend. Told me - You can only be really good in one thing at a time.
"Either you are a Great mechanic or a Great pilot."
Let's hear how and what you did to resolve the problem.
Barry
On Sun, Jul 11, 2010 at 10:29 AM, Paul Mulwitz <psm(at)att.net (psm(at)att.net)> wrote:
[quote]
Hi Jerry,
This message from Klaus Truemper made me wonder - did you mount your engine aligned with the fuselage centerline? Or, did you angle it one way or the other to deal with torque?
Paul
XL - doing upgrade
From: owner-zenith-list-server(at)matronics.com (owner-zenith-list-server(at)matronics.com) [mailto:owner-zenith-list-server(at)matronics.com (owner-zenith-list-server(at)matronics.com)] On Behalf Of Klaus Truemper
Sent: Sunday, July 11, 2010 4:15 AM
To: Matronics Zenith
Subject: Re: First flight of N316JL
Hi Jerry,
Congratulations!!
Left wing heavy: When you look out of the cockpit onto the left
wing, how far down must the aileron be relative to the trailing
edge, for wings level? This can be measured twice, once in level
flight, say at cruise speed, and once with engine at idle rpm and
best glide.
The test will give an idea of the effect of engine torque, and
also will tell how much is caused by the uneven weight distribution with
pilot in left seat. You could compare this with the numbers by other HDS builders.
I have not looked at this recently for my plane, but would guess that
for cruise, the left aileron is down 1 to 1 1/2 inches, and in glide about
half of that.
Best wishes,
Klaus
012 34567 89
0
[b]
| | - The Matronics Zenith-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Zenith-List |
|
|
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
