E-FLITE Blade CP Pro 2 Manual page 32

• Once the stock brushed main motor has been removed from the frame, temporarily install the Park 370
brushless motor and adapter ring . Then, using an 8-, 9- or 10-tooth pinion gear (EFLM1949, EFLM1950 or
EFLM1951) main gear for reference, mark the shaft of the motor (using a marker or tape) at the point to which
the pinion gear should be press fit onto the shaft to provide adequate gear tooth contact of the pinion and main
gear . It is important to install the pinion on the motor shaft so that it will always offer full contact with the main
gear teeth in order to promote the best power transfer and to prevent uneven and/or accelerated gear wear .
• After confirming the point to which the pinion gear should be press fit onto the motor shaft, remove the motor
from the frame . Then, following the instructions included with the motor, install the pinion on the motor shaft .
The motor is now ready to install in the helicopter .
• Next, install the motor in the main frame using the mounting screws and washers removed from the stock
brushed main motor . It is a good idea to apply a small amount of blue threadlock compound to the threads
before installing the screws . If possible, be sure to mount the motor so the leads exiting the rear of the case
are positioned as close to the main shaft as possible in order to help provide better clearance for the canopy .
Do not tighten the mounting screws entirely until after the next step .
Note: Do not use the screws included with the brushless motor for mounting as they do not offer
adequate thread length for secure installation.
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• Take your time to set the gear mesh between the pinion and main gear properly. Then, tighten the mounting
screws securely .
Note: It is very important to set the gear mesh so it is smooth with no binding. Be certain to check the
mesh at multiple points on the main gear in order to find the position in which to secure the motor for
the best gear mesh overall. Remember, if the gear mesh is set too loose or too tight, at any point on
the main gear, it may strip the gear and/or could cause a significant loss in power.
• After completing installation of the brushless motor, we also suggest that you install the optional 20x20mm Heat
Sink (EFLM1912) . Be sure to follow the instructions included with the heat sink for proper installation .
• Next, it will be necessary to prepare the 20-Amp Brushless ESC (EFLA311B) for installation. For these steps you
will also need the JST female/2 JST male parallel Y-harness (EFLA228). This Y-harness will be used to provide
power to both the 2-in-1 control unit and brushless ESC from the LiPo battery pack .
• Because the ESC does not include a battery connector, you will need to solder the Y-harness directly to its
battery power leads. To do this, remove one of the Y-harness' JST male connectors from its wire leads, as close
to the end of the connector as possible . Then, strip the ends of the remaining wire leads so that they can be
soldered to the ESC's battery power leads .
Note: It is extremely important to be sure that you remove one of the JST male connectors and not the JST
female connector . It is also critical that you maintain proper polarity (positive-to-positive and negative-to-negative)
when soldering the leads together, while also using shrink-tubing to insulate the joints in order to prevent shorting .
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