E-flite Mini Edge 3D ARF - Manual (Page 34)

34
Receiver, Battery and ESC Install
Required Parts
Fuselage Battery
Hook and loop tape (2) Receiver
Brushless speed control
Required Tools and Adhesives
Thin CA
Optional Parts
Hook and loop strap
Important Information about Your Brushless ESC
Make sure your ESC brake is programmed to ‘off’.
Also, be sure to use an ESC with the proper 9V cutoff
when using 3-Cell Li-Po packs. We suggest this cutoff to
be of the soft variety to prevent hard motor cutoffs during
low level 3D flying.
Most 20A–25A brushless esc on the market either warn
against running four (4) sub-micro servos or do not
specify this setup will work. The reason is because often
times running four sub-micro servos with a 3-cell Li-Po
battery are outside the range of the controller’s BEC
capability. Most controllers on the market can only handle
800mA to 1 Amp continuous when using a 3-cell Li-Po
battery, some even lower. However, many consumers are
still running four sub-micro servos with success.
If you choose to attempt this you must setup your plane
properly and check the current draw (under load) of
your radio system making sure it is within the
specifications of the controller’s BEC. Be sure to put the
esc in a position to get the best airflow since cooling
will help the BEC capacity.
We now have a new version of the E-flite 20A Brushless
ESC (EFLA311B) which is equipped with a higher rated,
heavy-duty BEC that can dissipate more heat and handle
higher wattage when using a 3-cell Li-Po battery. Make
sure you specify this new part number to ensure you are
getting the updated controller. You should always still
check your setup first before flying.
Some other alternatives are available:
1. Disable the controller’s BEC per manufacturer’s
instructions and use a flight pack battery.
2. Buy a device such as an external BEC that is specified
to handle more current.
3. Select a controller such as the Castle Phoenix 35 or our
updated E-flite 20A Brushless ESC (EFLA311B) that has
a higher rated, heavy-duty BEC.