E-flite UMX ASK-21 BNF User Manual download pdf (Page 9)

You should bind your aircraft and transmitter before doing these tests. Move the controls on the transmitter

to make sure aircraft control surfaces move correctly and in the proper direction.

Make sure tail linkages move freely and that paint or decals are not adhered to them.

Control Direction Test

Dual Rates

To obtain the best ﬂ ight performance, we

recommend using a DSM2/DSMX radio capable

of Dual Rates. The suggested settings shown here

are the recommended starting settings. Adjust

according to the individual preferences after the

initial ﬂ ight.

NOTICE: Do not set your transmitter travel adjust

over 100%. If the TRAVEL ADJUST is set over

100%, it will not result in more control movement, it

will overdrive the servo and cause damage.

It is normal for linear servos to make signiﬁ cant

noise. The noise is not an indication of a faulty

servo.

Tip: For the ﬁ rst ﬂ ight, ﬂ y the model in low rate.

Tip: For landing, we recommend using high rate

elevator.

Dual Rates

High Rate Low Rate

Aileron 100% 70%

Elevator 100% 70%

Rudder 100% 70%

Adjusting Center of Gravity (CG)

The CG location is 18mm back from leading edge

of the wing at the root. This CG location has been

determined with the included 1S 150mAh 3.7V

Li-Po battery installed in the front of the battery tray.

Test Glide Your Aircraft

Before your ﬁ rst ﬂ ight, we recommend you test

glide your aircraft to adjust trim, if needed. Hand

launch your aircraft into the wind in calm conditions

and let it glide to land in soft grass. Adjust the

control linkages (see control centering) if your

aircraft does not glide straight and level to the

ground. Perform this process as many times as

needed to trim the aircraft to respond as you desire

before your ﬁ rst tow or Hi-Start launch.

18mm

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E-flite UMX ASK-21 BNF User Manual Page 9