Go Back  RCU Forums > RC Airplanes > 3D Flying!
 Control Surfaces at Hover >

Control Surfaces at Hover

Community
Search
Notices
3D Flying! Our 3D flying forum is the ultimate resource for 3D flyers. Also discuss the latest in "4D" flying!

Control Surfaces at Hover

Thread Tools
 
Search this Thread
 
Old 06-20-2008 | 07:33 PM
  #1  
playntraffic's Avatar
Thread Starter
Senior Member
 
Joined: Mar 2006
Posts: 388
Likes: 0
Received 0 Likes on 0 Posts
From: Alabaster, AL
Default Control Surfaces at Hover

I am getting the hang of hovering both canopy and belly in. My problems are with the torque roll. I've noticed that when I hover the plane does not lock in perfectly vertical. I have to keep adding elevator to keep it from nosing forward. I hold a lot of positive elevator. So when it turns around I have to add a lot of opposite elevator.

Someone noticed that the ailerons were in a slight spoileron position. I tried adjusting that more neutral and tried again. I could not notice much of a difference.

If you trim for basic flight and then hover, will the trims affect the plane differently? Rudder trim, elevator, or ailerons? What else could be the problem? The plane is an Extreme Flight Profile Yak with a Saito 82. It is set up slightly tail heavier than recommended.

Thank you.
Old 06-20-2008 | 08:21 PM
  #2  
Banned
 
Joined: Mar 2003
Posts: 3,848
Likes: 0
Received 0 Likes on 0 Posts
From: Tokoroa, , NEW ZEALAND
Default RE: Control Surfaces at Hover

The hover is a "balancing" act and if you have to hold in a lot of elevator then you're not at the balance point.

With my GeeBee, Katana and Mojo, hovering is almost "hands off" when it's properly balanced in a hover.

You'll find that most planes won't torque on their own (ie: without using aileron) until they're really balanced in the hover that's because if they're either forward or back of balance they'll be moving slowly through the air and that stabilizes them from torquing.

Are you letting the engine torque the plane or are you using the ailerons? If the latter then you're not on the balance point and need to lean it back or forwards a little more so you can ease-of that constant elevator input.

When I'm hovering, most people comment that I'm hardly touching the sticks.
Old 06-20-2008 | 11:18 PM
  #3  
 
Joined: May 2008
Posts: 897
Likes: 0
Received 0 Likes on 0 Posts
From: AUSTRALIA
Default RE: Control Surfaces at Hover

yes it does sound like the model could be abit nose heavy.
Old 06-21-2008 | 06:11 AM
  #4  
playntraffic's Avatar
Thread Starter
Senior Member
 
Joined: Mar 2006
Posts: 388
Likes: 0
Received 0 Likes on 0 Posts
From: Alabaster, AL
Default RE: Control Surfaces at Hover

Could the aileron position affect the hover? Airflow over the wing causes the nose to drop because of the spoilerons?
Old 06-21-2008 | 06:38 AM
  #5  
Member
 
Joined: Mar 2007
Posts: 90
Likes: 0
Received 2 Likes on 2 Posts
Default RE: Control Surfaces at Hover

if the ailerons are in a slight spoileron position it may be possible that they may be effecting your hover. Try to get the ailerons flat to the wing and move your CG back.....some planes hover with some up elevator anyway depending on how it is designed......if i was you i would go out on a calm day and try to get it in the complete vitical postion and see what happens......is it possible that there is some wind blowing your plane around?

Good Luck!!
Old 06-21-2008 | 10:48 AM
  #6  
Senior Member
My Feedback: (23)
 
Joined: Jan 2002
Posts: 1,192
Likes: 0
Received 1 Like on 1 Post
From:
Default RE: Control Surfaces at Hover

try keeping the model slightly leaning back rather than straight up.
Old 06-22-2008 | 01:08 AM
  #7  
Daniel Z's Avatar
Senior Member
 
Joined: Feb 2002
Posts: 490
Likes: 0
Received 0 Likes on 0 Posts
From: SantiagoReg Metropolitana, Providencia, CHILE
Default RE: Control Surfaces at Hover

It can also be too much down thrust especially when you have the CG to far aft some guys add more down thrust to fly straight uplines, thus affecting hovering
Old 06-22-2008 | 02:35 AM
  #8  
 
Joined: May 2008
Posts: 897
Likes: 0
Received 0 Likes on 0 Posts
From: AUSTRALIA
Default RE: Control Surfaces at Hover

yes this is very true regarding down thrust on the engine, this engine down thrust is only there for initial air lift but when it comes to a 3D type models with monster wing areas ect this down thrust can be set neutral. also the right prop should be used for maximum vertical lift, something like the master airscrew 14 x 6 with the 80 size 4 stroke. don,t forget to make this model abit on the rear c.o.g.
Old 06-22-2008 | 05:10 AM
  #9  
Banned
 
Joined: Mar 2003
Posts: 3,848
Likes: 0
Received 0 Likes on 0 Posts
From: Tokoroa, , NEW ZEALAND
Default RE: Control Surfaces at Hover

All my 3D planes are set up 0-0-0 and I've even gone away from using right-thrust on the motor now (that's what the rudder is for :-)

In a plane that you intend to 3D, anything other than 0-0-0 is just something you'll have to fight on the sticks anyway because when you're hucking hard you'll spend as much time inverted as upright and more time flying on the prop than on the wing.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.