Linear output - was Notes to Self 3

[Atwood, Mark]

This was basically my point.  I think we sometimes get beginners tooooo worried about the mechanical setup.  Not to downplay the value of good mechanical setup...I think it's VERY important to have tight, slop free, true mechanics before we start messing with the radios... But I think there 's a point at which you're wasting both time and money.  
 
Same goes for retentive straightness...there are tolerence to measure...and tolerences not to bother with.  Once I'm within a certain range...it's time to fly.  There's no point in measuring to 1/128th of an inch when lord knows the edges of my monokote from various color schemes and overlaps have more impact. 

________________________________

From: discussion-request at nsrca.org on behalf of Rcmaster199 at aol.com
Sent: Thu 2/10/2005 1:29 PM
To: discussion at nsrca.org
Subject: Re: Linear output - was Notes to Self 3


The latter, in my view. 
 
Servo output to surface deflection (mechanical set-up) is one thing. Stick movement to surface deflection, quite another. Not to belabor the obvious, we have expo galore available and each adjusts to his or her prefernce.
 
m2c
MattK
 
In a message dated 2/10/2005 1:02:12 PM Eastern Standard Time, atwoodm at paragon-inc.com writes:

	
	Ok...I have a question for the Aeronautical engineers in the group...   All of this discussion has been centered around an assumed desire to get a linear relationship between our stick movement, and that of the control surface.  Clearly the effect of moving a control surface on the aircraft is proportional to the amount of movement...but is it linear??  I have to beleive it's not...   Just don't know the mechanics behind it...
	 
	Assuming it's not...(And I'm betting for some portion of the throw is close enough to be considered linear and then at higher deflections it becomes either more or less efficient) is there really a purpose to trying to exact the linear nature of the stick/control surface linkage...or it is an exercise in retentiveness :)
	 
	I also know that our spring tension on the sticks in not linear...especially around center...so it seems unlikely that what "Feels" linear isn't anyway.
	 
	To me it's akin to comparing two high end stereo systems both of which have specifications well beyond the range of human hearing....
	 
	-Mark

 
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