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Note: The ESC in the 3-in-1 used to control the main motor has been calibrated for a narrower
range of throttle operation. For this reason, it will not be necessary to set the Idle Up TCM ADJ
knob much beyond approximately 1/4 travel in order to achieve 100% throttle at mid stick. This is
not a problem and there is no adverse affect for having the knob adjusted to beyond approximately
1/4 travel, though it is not necessary. The status LED indicator on the 3-in-1 will turn solid red when
full power has been achieved.
When using the optional, 370 brushless power system (as seen in the “Optional Brushless Main Motor Power
System Installation and Setup” section found on pages 48–56), we recommend adjusting the Idle Up TCM ADJ
knob to provide the best overall combination of main rotor head speed and collective/cyclic response depending
on your preferred style of flying, similar to as noted for the stock bushed 370 power system. However, please
note that while it is possible to fly with the midpoint set to approximately 100% throttle when using the optional
brushless power system, care must be taken during flight to prevent over speeding of the main rotor blades,
especially during fast descents.
Note: Some brushless ESCs may also be calibrated with a narrower range of throttle operation
and could achieve 100% throttle before the Idle Up TCM ADJ knob reaches full travel. This is not a
problem and should have no adverse affect on flight performance.
Please see the “Programmed Throttle and Pitch Curves for the Idle Up/Stunt Flight Mode” section found on pages
31–32 for more information regarding adjustment of the Idle Up TCM ADJ knob.
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