Boomerang Ranger
01-11-2024, 08:26 AM
#2
My Feedback: (1)
Aileron throws 10-12mm is good. 25% expo.
Elevator 12-15mm. 25% expo.
Manual CG is nose heavy so if your starting there, have that CG Location achieved with removable weight in the nose and slowly move back.
Manual CG is Fine for flying and once you move the CG rearward take off runs will be shorter as well.
Elevator 12-15mm. 25% expo.
Manual CG is nose heavy so if your starting there, have that CG Location achieved with removable weight in the nose and slowly move back.
Manual CG is Fine for flying and once you move the CG rearward take off runs will be shorter as well.
The following users liked this post:
Canadian Man (01-15-2024)
01-14-2024, 05:49 PM
#5
My Feedback: (27)
Join Date: May 2002
Location: dimondale,
MI
Posts: 244
Likes: 0
Received 0 Likes
on
0 Posts
I am building one also. Are the throws you listed for total travel on ailerons and elevator? And where is the measurement made? At the tip or at the widest point of the control
surface?
Thanks,
Frank
BTW- the YouTube videos are excellent and very well done.
surface?
Thanks,
Frank
BTW- the YouTube videos are excellent and very well done.
01-15-2024, 06:04 AM
#6
I don't like like how control throw is express as a linear measurement. You get the above question. I generally assume the throw is measured at the surface root.
A better way is to express the throw as an angle, because the width of the surface is not important.
I like to use 15-degree up/down for elevator and aileron as a starting point. This seems to work with all the models I have. But if the CG is too far forward, as most manufacturers recommend, 15-degree may be too little for the elevator. The numbers Jonathan expressed seem to be close to 15-degrees.
A better way is to express the throw as an angle, because the width of the surface is not important.
I like to use 15-degree up/down for elevator and aileron as a starting point. This seems to work with all the models I have. But if the CG is too far forward, as most manufacturers recommend, 15-degree may be too little for the elevator. The numbers Jonathan expressed seem to be close to 15-degrees.
