 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
tonyrenshaw268(at)gmail.c
Guest
|
 Posted: Thu Jan 16, 2014 10:38 pm Post subject: Electric Flaps base attachment moves up and down under load |
 |
|
Hi,
I’ve noticed my ply insert for my electric flaps moves up and down. I want the flaps to be obviously rigidly held up, against the mechanical stop in the electric motor, but also for them to be not vibrating too much when fully extended. The floor is pulled up by the actuator being fully retracted, when the flaps are extended, so an aerodynamic load through the flaps will harmonic vibrate the skin basically upward. I’m wondering if there would be any benefit in making the floor rigid in this spot, by creating a reinforcement sandwich strap.
Ideas kindly accepted. I’d much prefer to do it now as I can actually do it with the top off in my good jig (yes, ex you Kingsley). I’m even tempted to put in the main gear legs for the tri, because I have such good access at the moment, but I’m going taildragger already. The mod I am using was offered up years ago by Bob Berube, of Florida, and it looks like it should go really well, with similar geometry to the original mono wheel. Some have said it might suit a different main gear position, and it does make me wonder if I should set up the ply inserts in the back seat footwells, as I call them. Anyone got an estimate of how long it would take to put in the inserts and what they’d weigh to carry round?
Lastly, is there a 3D laser styled device you can wander around the inside of the footwells that will create a 3 D image of them, in relation to each other, such that you could then create a very tight ply insert if you could mill it out with something. It just frustrates me the number of times I’d like some sort of 3D pattern maker. If something like this exists, what are they called and does anyone know whether you could do such a thing? I know its probably bigger than Ben-Hur but one day it won’t be.
Regards
Tony Renshaw
Sydney
| | - The Matronics Europa-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?Europa-List |
|
|
|
| Back to top |
|
 |
grahamsingleton(at)btinte
Guest
|
| Posted: Fri Jan 17, 2014 2:42 am Post subject: Electric Flaps base attachment moves up and down under load |
|
|
Tony
there is very little load on the flap operating mechanism because the flaps are pivoted
very close to the aerodynamic centre. (of the flap) With a correctly adjusted manual system
the flap can be placed anywhere within it's range and won't move unless pushed. Any bending will be caused by
the flap motor pushing on a stop somewhere.
Make sure the flaps retract fully, you want a very slight reflex of the trailing edge,
flat on the top of the wing, not the bottom
Graham
From: Tony Renshaw <tonyrenshaw268(at)gmail.com>
To: europa-list(at)matronics.com
Sent: Friday, 17 January 2014, 6:32
Subject: Electric Flaps base attachment moves up and down under load
--> Europa-List message posted by: Tony Renshaw <tonyrenshaw268(at)gmail.com (tonyrenshaw268(at)gmail.com)>
Hi,
I’ve noticed my ply insert for my electric flaps moves up and down. I want the flaps to be obviously rigidly held up, against the mechanical stop in the electric motor, but also for them to be not vibrating too much when fully extended. The floor is pulled up by the actuator being fully retracted, when the flaps are extended, so an aerodynamic load through the flaps will harmonic vibrate the skin basically upward. I’m wondering if there would be any benefit in making the floor rigid in this spot, by creating a reinforcement sandwich strap.
Ideas kindly accepted. I’d much prefer to do it now as I can actually do it with the top off in my good jig (yes, ex you Kingsley). I’m even tempted to put in the main gear legs for the tri, because I have such good access at the moment, but I’m going taildragger already. The mod I am using was offered up years ago by Bob Berube, of Florida, and it looks like it should go really well, with similar geometry to the original mono wheel. Some have said it might suit a different main gear position, and it does make me wonder if I should set up the ply inserts in the back seat footwells, as I call them. Anyone got an estimate of how long it would take to put in the inserts and what they’d weigh to carry round?
Lastly, is there a 3D laser styled device you can wander around the inside of the footwells that will create a 3 D image of them, in relation to each other, such that you could then create a very tight ply insert if you could mill it out with something. It just frustrates me the number of times I’d like some sort of 3D pattern maker. If something like this exists, what are they called and does anyone know whether you could do such a thing? I know its probably bigger than Ben-Hur but one day it won’t be. m/Navigator?Europa-List" ="http://forums.matronics.com/" target="_blank">http://forums.matronics  tronics.com/contribution" target="_blank">http://www.matronics.com/contri================
[quote][b]
| | - The Matronics Europa-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?Europa-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
