Hangar 9 FuntanaX 100 ARF, Assembly Manual

Page: 37 / 44

37
Setting the control throws for your Funtana does require
some attention to detail. To correctly set the throws, it is
highly suggested to use the following procedure to achieve
the greatest mechanical advantage from your servos.

Step 1
Determine the maximum amount of control surface
throw from the throws listed. Use the 3D throws
listed to set the maximum amount of throw, then
use your computer radio for the lower rate listed.

Step 2
Set the Travel Adjust (ATV on a Futaba transmiter) to about
15% under the max. (On a JR ® transmitter, that is 135%.)
Make sure to set both directions during this process.

Step 3
Adjust the position of the clevis on the control horn
and position of the ball link on the servo arm to
achieve the throw decided in Step 1. It is highly
recommended not to change the position on the servo
arm unless absolutely necessary. Use Travel Adjust
(ATV) to finalize the throws. That is why we left a
little margin in the percentages back in Step 2.

Step 4
If setting a dual elevator or aileron, match the linkage
locations used back in Step 3. Increase or decrease
the Travel Adjust (ATV) a few points as necessary to
fine-tune the throws to match up left and right sides
and up and down throws so all is symmetrical.
This is all necessary to tune the mechanical advantage
as good as possible. When setting up a model for
3D, the mechanical advantage will be less because
of the large throws, and thus the servo will work
harder and wear faster. Using an insufficient servo
for the job, or trying to get too much throw, will
cause something to give, probably the servo.
There isn’t an exact geometry to the linkage, as it depends
on how much throw each individual modeler requires.
The linkage geometry should always be maximized
so the servo isn’t working any harder than it has to.
Low rate 3D rate
Aileron
17° up 34.5° up
17° down 34.5° down
Elevator
11.5° up 50° up
13° down 51° down
Rudder
24° right 52° right
24° left 52° left
Note : Control throws are measured at
the widest part of the elevator, rudder,
and aileron unless noted otherwise.
Once the control throws have been set, use the
supplied heat shrink tubing on each clevis to
prevent them from opening during flight.
Rates and Expos
Use Expo to soften the feel of the model. On
high 3D rates, use quite a bit of expo. The goal
on 3D rates is to get the model to feel the same
around neutral as it does on low rates.
Use low rate settings for all flying except for 3D
aerobatics. For precision flying or general sport hot-
dogging, the low rate throws are perfect, even for snap
rolls. The only exception is rudder rates. Use 3D rudder
rate when doing stall turns and rolling circles, since
the more rudder the better for these. When doing 3D
aerobatics, flip to 3D rates just before the maneuver.
As soon as the maneuver is done, flip back down
to low rate to avoid over-controlling the model.
Control Throws