E-flite Control Line Motor Timer User Manual
Multiple-Function Electronic Timer
EFLA172
The E-flite C/L Timer has been designed to deliver control of an R/C ESC for use in an electric control line model. The
timer has a very low weight of only 3.2 grams and is very compact in size. The timer is programmable and has a second
function for controlling other features on your model such as retractable landing gear. The main features of the C/L
Timer are listed below:
1. Programmable timer settings in 1 minute increments
2. Motor rpm is adjustable from off to full throttle
3. Motor cut-off alert in flight
4. Gradual motor rpm slow down prior to cut off
5. Optional control for items like retractable landing gear
6. quick and easy stopping control
Introduction of Use
The top of the timer has the start button and Motor RPM adjustment knob. The label is located on the bottom of the
timer.
You will note the label is on the bottom of the timer. On the left side there are two sets of pins. These pins are for the
ESC and second function. Please note the labeling of the ground wire, positive wire, and signal wire on the left side of
the timer. This labeling is correct when viewed from the bottom of the timer. The ESC port is on the top of the timer
and the Optional control is for retract servos, etc. This is the port that is on the bottom of the timer.
In the middle of the label we show the Motor RPM potentiometer. This potentiometer is located on the opposite side of
the timer. To increase motor RPM you turn the knob clockwise. To decrease motor RPM you turn the knob counterclockwise. Please note that if you turn the knob fully counter-clockwise the motor will not run.
On the right hand side of the label we show the Start button. This button is located on the top of the timer. This button
controls the duration of flight as well as the emergency stop ability of the timer.
Battery power required for timer operation must exceed 5 volts as a minimum voltage.
Istructions for Use
Plugging in the ESC and optional device
1. Plug the ESC into the timer ensuring to align the ground and signal wires. The ground wire is usually brown
or black. The signal wire is usually orange or white. If you plug the ESC in backwards, the unit will fail to
operate. You will want to plug the ESC onto the top of the timer.
2. Plug the retract servo into the timer ensuring to align the ground and signal wires. This will plug into the
lower set of pins on the timer, or under the ESC.
3. If using the optional device (designed for retract operation) you will find the retracts to raise 15 seconds after
the motor begins to run. The retracts will lower 18 seconds before the cut-off warning occurs.
Setting timing for flight
1. Pushing the start button and holding it down will cause the motor to run for a split second at minimal throttle.
As you continue to hold the start button down the motor will run and stop, run and stop, run and stop every
few seconds. Each of these run and stop periods dictates one minute of flight time. Three starts and stops
would equal three minutes.
2. When you come to the number of cycles (equaling the number of minutes) you would like to fly, release the
start button and the motor will start within 5 seconds and will achieve full throttle as set by the potentiometer
within 3 seconds. Once at full power the motor will run for the specified period of time.
3. We recommend if this is the first time you have flown control line or at least the first time in a few years, you
might start at either 1 or 2 minutes.
4. You will need to set the timing for every flight once you plug in the battery.
Stopping the Motor
1. If for some reason you would like to stop the motor once it has started to run, you only need to press the start
button once briefly. Doing this shuts the motor down and erases the timing for this operation.
Adjusting Motor RPM
1. The potentiometer on the top of the timer allows you to adjust the RPM during operation. You can also move
the potentiometer before setting the timing if you desire.
2. Screwing the potentiometer fully clockwise will result in the motor running at full RPM. Please ensure you
match your propeller, battery, and motor to run within the specifications of your equipment.
3. Screwing the potentiometer fully counter-clockwise will result in the motor shutting down. All that is needed
is to turn the potentiometer clockwise until the motor starts up again.
Motor Cut-Off Alert
1. Approximately 3 seconds before the motor begins to gradually slow down, the cut-off alert will occur. This is
a very brief reduction in motor RPM. This signals that the motor will begin to slow down to a full stop within
10 seconds.
Limited Warranty Period
Horizon Hobby, Inc. guarantees this product to be free from defects in both material and
workmanship for a period of 1 year from the date of purchase.
Limited Warranty
(a) This warranty is limited to the original Purchaser ("Purchaser") and is not transferable.
REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVE
REMEDY OF THE PURCHASER. This warranty covers only those Products purchased from an
authorized Horizon dealer. Third party transactions are not covered by this warranty. Proof of
purchase is required for warranty claims. Further, Horizon reserves the right to change or modify
this warranty without notice and disclaims all other warranties, express or implied.
(b) Limitations- HORIZON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR
IMPLIED, ABOUT NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE OF THE PRODUCT. THE PURCHASER ACKNOWLEDGES THAT
THEY ALONE HAVE DETERMINED THAT THE PRODUCT WILL SUITABLY MEET THE
REQUIREMENTS OF THE PURCHASER’S INTENDED USE.
(c) Purchaser Remedy- Horizon's sole obligation hereunder shall be that Horizon will, at its
option, (i) repair or (ii) replace, any Product determined by Horizon to be defective. In the event of
a defect, these are the Purchaser's exclusive remedies. Horizon reserves the right to inspect any
and all equipment involved in a warranty claim. Repair or replacement decisions are at the sole
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