RCU Forums - View Single Post - Which is Upline ?
View Single Post
Old 04-27-2010 | 09:54 PM
  #3  
mikeainia
My Feedback: (1)
 
Joined: Dec 2007
Posts: 234
Received 0 Likes on 0 Posts
From: Madrid, IA
Default RE: Which is Upline ?


ORIGINAL: Electric3D

Guys. I find two conflicting scenarios here. See pictures at the bottom. The question is which is the up line ?

Is the line closer to the LE an upline or is that the down line ? Does it matter as long as the down line is perpendicular to the fuse ? Perils of a newbie ! I know, when I fly, that pulling my wrist back or raising my arm , the elevator must go up and pulling my wrist down or lowering my arm the elevator must go down.

So if the bellcrank is at the bottom of the wing and the elevator horn is at the bottom of the eleavtor, the line closer to the LE is down line. If you put the elevator control horn on top of the elevator it becomes a up line.

For a trainer which is better. Or is that just immaterail as long as elevatot corresponds correctly to the wrist action ?

Thanks again for your advise.
It really doesn't matter much as long as raising you arm (or rocking your fist back) gives UP elevator and moving the opposite direction gives DOWN.

As you've noted, moving the horn from one side of the elevator to the other reverses the direction of the elevator. Moving the bellcrank from top to bottom doesn't matter. Moving it so that the pushrod is outside the fuselage doesn't matter.

What DOES matter is that you have a little bit of sweep back in the leadouts - the leadout guides should be somewhat behind the center of gravity.