- Wires between Electronic Speed
Controller (ESC) and Battery must have combined maximum length of
- Use only quality Gold connectors of
appropriate ampere rating
- Insure proper solder joints
- Do NOT shorten Motor Wires! (shorten
ESC side if needed)
- NEVER connect Battery to ESC with
reverse polarity (see + / - symbols below)
- Firmly mount the motor in model before
- You MUST provide for cooling airflow to
ESC and Motor. Do NOT place these parts inside a completely closed
- Test system first without propeller
*Connect Motor to Controller
*Connect ESC 3-pin connector to Receiver's correct channel (see below)
*Turn on Transmitter - Set Throttle Stick to "ZERO".
*Connect Battery to ESC
*After a few seconds, you should hear an arming tone from the motor
*Advance throttle to start motor. Check motor rotation direction.
Viewed from front of the MODEL, motor shaft should turn
counter-clockwise and printing on propeller always faces you (true when
motor is front or rear mounted).
- To reverse motor direction, switch
connection of any two wires between Motor and Controller. Never
change connection between battery and ESC!
(TITAN ESC also have programming choice for motor rotation direction)
- Do NOT exceed max suggested prop size,
unless you confirm current is within spec with accurate ammeter. Always
keep all body parts BEHIND the disk of spinning prop. Do not wear
loose clothing, jewelry, or long hair (tie it up!) when near a spinning
prop. Even a small motor and prop will cut you severely. BE
- Futaba transmitters must have Throttle
Channel REVERSED. Other brands should be set to NORMAL direction.
- Most aftermarket receivers today are
PPM (aka FM) type. Transmitters may be PPM only, or they may have
options both PCM or PPM modulation. You must be sure that your
transmitter is set properly for the type of receiver you have, PPM (FM)
- The connector from ESC to Receiver must
be connected to the proper channel on the Receiver, with correct polarity.
See Receiver/Connector notes below about connector types and polarity.
- Transmitter Throttle Channel
* FUTABA / HITEC /SANWA / AIRTRONICS >> RECEIVER CHANNEL 3
* JR >> RECEIVER CHANNEL 1
older Sanwa / Airtronics systems use channel 1)
- Initial settting for throttle channel
should all be DEFAULT.
* Travel set to -100 at throttle OFF, +100 at throttle FULL
* Trim set to 0% at at throttle OFF, 0% at throttle FULL
* Sub-Trim set to 0%
- If all connections for motor, ESC, and
battery are correct as shown in the diagram above - and you have set the
tramsmitter properly - but you get no arming tone when main battery is
connected to ESC:
*Check throttle stick is at "0"
*Set Throttle TRIM to MINUS 20%
*Re-connect battery to see if you hear arming tone from motor
More Trouble Shooting (in order of
- Many problems are due to improper
transmitter or receiver setup. Be SURE to read this document
carefully, and double check everything. If all fails, borrow a
different transmitter and receiver from a friend if necessary, and try
- Motor starts but cuts out as
throttle is advanced
*Speed Controller not set properly: To protect your battery,
your speed controller has settings for "Auto Cut" battery voltage.
Be SURE that the settings in the Speed Controller match your battery type
(Lithium, NiCd/NiMH) and cell count (2S, 3S, 4S... for lithium)
*MANY users choose the wrong battery and prop combination, causing
current (amps) to rise much too high. This causes the battery to
drop voltage, and auto-cut occurs (as it should). If you don't know
the prop size to use, ask your vendor. Tell him what battery type
and cell count you have, and motor type including "Kv". For
testing this condition, reduce prop size 2 inches in diameter and try
again. Try another battery, as yours may be weak or defective.
*Connector soldering: It is EXTREMELY common to have a cold
solder joint in a connector, which causes poor starts, no starts, or rough
running and cut outs. Even if you are sure they are fine, RESOLDER all
connectors with a HOT iron.
Receiver / Connector Notes
The Receiver connector on almost all Brushless Speed Controllers is "JR"
standard type MALE (has female pins). This connector can be attach
without modifications to all models of receivers, except pre-2001
Airtronics/Sanwa types. However, you MUST be careful to observe
correct polarity of Positive-Negative-Signal wires. Your receiver will
have indicators showing the proper way to connect.