Go Back  RCU Forums > Electric Aircraft Universe > 3D Electric Flying!
 Help, Newbie to 3D, plane keeps snapping with up elev. >

Help, Newbie to 3D, plane keeps snapping with up elev.

Community
Search
Notices
3D Electric Flying! Discuss all aspects of Electric 3D RC flying here!

Help, Newbie to 3D, plane keeps snapping with up elev.

Thread Tools
 
Search this Thread
 
Old 06-24-2010 | 09:30 PM
  #1  
Thread Starter
 
Joined: Sep 2002
Posts: 550
Likes: 0
Received 0 Likes on 0 Posts
From: nowhere
Default Help, Newbie to 3D, plane keeps snapping with up elev.

Guys I just got my first "3D" type plane and I'm having a problem with it.
Its the new parkzone extra 300 and its the first plane I've ever had that has large amounts of throw to the surfaces.

I have a few problems with it and I'm sure its plane / setup etc...

my first major problem is that with any moderate to large amounts of up elevator the plane will snap/ spin out to the right..

Say I'm coming in with moderate speed and try to do a nice big loop well it will corkscrew out of the loop near the top.

If I come in and punch the elevator hard up it will pop straight up into a "wall" but then snap to the right..

Its kinda scary because If in a panic I jam up elevator the thing snaps on me to the point one time I got in a spin and had trouble recovering.
The elevator isn't warped and it doesn't matter slow or fast little or alot of input it still rolls right.
elevator seems square to the fuse / level and lateral balance is great so what could it be?

Also the second problem is I'm not use to flying a tail heavy type plane but I notice when it trying to land a couple times I've gotten the speed down and the plane pourposed while stalling / falling. The tail just kinda bobed up and down with the plane in a high alpha attitude and loosing altitude.
is this normal or is the cg off?

Any and all help is appreciated as I have never have had nor flown planes like this before.
Thanks!
Old 06-24-2010 | 09:41 PM
  #2  
My Feedback: (13)
 
Joined: Jan 2002
Posts: 1,857
Likes: 0
Received 0 Likes on 0 Posts
From: Chesterfield, MO
Default RE: Help, Newbie to 3D, plane keeps snapping with up elev.

The snapping is typical for a plane with 3d rates. You basically need to fly normal LARGE loops (with very little elevator) or do full "up" loops at low throttle (a waterfall). with full up or full down elevator, the plane will not fly on the wing. So keep your plane up high while you get used to flying 3d.

You should be running a lot of exponential on the elevator and ailerons. Or use dual rates - one for 3d and one for regular flying. I suspect your plane setup is fine. A rearward CG can make for tricky landings, so don't let the plane get too slow. You might have to push some down elevator on final approach to keep the nose down and keep it flying.

If you have a 3d flyer you trust, have him check it out.
Old 03-24-2012 | 10:01 AM
  #3  
Junior Member
 
Joined: Mar 2012
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
From: amsterdam, NETHERLANDS
Default RE: Help, Newbie to 3D, plane keeps snapping with up elev.

DMcQuinn<span style="font-family: tahoma, verdana, arial; font-size: 11px; background-color: rgb(251, 252, 255); "> is right I have an exponential of 40% on my aileron and elevator also you can begin with less big end points around 80%</span>
Old 05-18-2012 | 07:36 AM
  #4  
Member
 
Joined: Mar 2012
Posts: 36
Likes: 0
Received 0 Likes on 0 Posts
From: cranebrookNSW, AUSTRALIA
Default RE: Help, Newbie to 3D, plane keeps snapping with up elev.

I'm running 40 or 50% expo and only 40% elevator throw on low rates. High rates is scary, but that's how much control authority you need when hovering. When at speed you need low rates or very very fine movements on the sticks.

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.