Collective setup

Collective setup

Post by dwal.. » Fri, 22 Sep 2000 04:00:00



I have a quick question of servo setups.  On my Raptor I have the
throttle servo's ATVs set to 100 and 100.  On the collective I am using
an arm that requires ATV of 145 and 145.  Should I put a longer arm on
and reduce the ATV to be closer the the throttle or is this good because
it is slowing the collective down and allowing the throttle to react
quicker?  Can someone shed some light on this??

Thanks

David Walden

Sent via Deja.com http://www.deja.com/
Before you buy.

 
 
 

Collective setup

Post by mikespruc » Fri, 22 Sep 2000 04:00:00


My opinion is to leave the arm as it is.... the shorter the servo arm, the
less work the servo has to do, due to the load being nearer the point of
rotation.

Your ATV's do not give much leeway for adjustment, but if they are adequate
then why change. Your theory of slowing the servo down is not strictly
accurate...if you need a particular setting to achieve a lift off, whether
you reach it in increments of 10 or 20, say, will not really make a
noticeable difference. It could also be argued that you are actually
speeding it up because the servo has to travel further for the same given
stick movement, but I will leave that for the mathematicians to comment
on.......
The story could be different if the plus and minus values were not the same
both sides...you are effectively then moving the midpoint by a smaller
amount when you use larger numbers.
The last comment is....try it....we all do, and as long as you can reverse
it if it doesn't work, you haven't lost anything. Hope this helps.

Mike S

Quote:

> I have a quick question of servo setups.  On my Raptor I have the
> throttle servo's ATVs set to 100 and 100.  On the collective I am using
> an arm that requires ATV of 145 and 145.  Should I put a longer arm on
> and reduce the ATV to be closer the the throttle or is this good because
> it is slowing the collective down and allowing the throttle to react
> quicker?  Can someone shed some light on this??

> Thanks

> David Walden

> Sent via Deja.com http://www.deja.com/
> Before you buy.


 
 
 

Collective setup

Post by Tony Anga » Fri, 22 Sep 2000 04:00:00


David.
Collective 'speed' isn't the key here. The length of the servo
arm although it will make a small difference, is less important in
controlling your power and RPM. I usually setup my machine
for linear pitch (0,25,50,75,100) first, then I adjust the throttle
to suit. Most often my throttle servo to carb linkage is non-
linear where it 'kicks in' early in it's travel always keeping the
RPM's from decaying when I add pitch.
Tony
Quote:

> I have a quick question of servo setups.  On my Raptor I have the
> throttle servo's ATVs set to 100 and 100.  On the collective I am using
> an arm that requires ATV of 145 and 145.  Should I put a longer arm on
> and reduce the ATV to be closer the the throttle or is this good because
> it is slowing the collective down and allowing the throttle to react
> quicker?  Can someone shed some light on this??

> Thanks

> David Walden

> Sent via Deja.com http://www.deja.com/
> Before you buy.