 |  | 7.Once the swashplate is moving in all the right directions in respect to the control stick, it is time to set the travels and prepare for flight!! Please note that most radios have a default expo amount for the swash mixes in CCPM. These expo settings help counteract interaction and it is generally recommended that expo is used for a smooth swashplate. Use the values found in the swash mix menu (the same ones used earlier to change the pitch, aileron, or elevator function direction) to increase or decrease the travel for each movement (check for binding as well). If more pitch is needed simply increase the Pitch value to add more travel. Do not change the "+/-" found in front of the value, only the number itself. For example, if more pitch is needed and the Pitch value in the Swash Mix menu is initially -60, changing the number to -70 would add more travel, and likewise, if the Pitch value was initially +60, changing it to +70 would also add more travel. Clear as mud? Don't worry, some time spent using the radio and seeing the effects of each change will help CCPM make more sense. | | | |
| Trim ADJUSTMENTS
With the mechanical setup done properly, the helicopter should end up with equal positive and negative pitch and equal cyclic throws. Finish by setting the pitch curves and getting everything else ready to go on the heli. If small adjustments are needed to get a "hands free hover" during flight testing, it is ok to use the radio trim. But if too much trim is being used, change the linkages instead to center things up. CCPM helis work best when the mechanical setup is near perfect and the less trim used the better for the mixing.[10}
140° Versus 120° CCPM
There are a small number of helis out there that are offered in a 140° CCPM version. The huge advantage a 140° system has over a 120° is that the geometry is more evened out between the two side servos and the front servo. This gives a more equal cyclic rate all the way around, where on a 120° setup the left/right cyclic is slightly faster than the fore/aft. The drawback is that there are still only a handful of radios with 140° mixing available (though a radio with a 120° program can be made to work with a 140° setup with some simple mixing). Also, only a handful of kits with 140° CCPM are currently available. | |  | | | |
|  | | The End!
Though it may appear complicated on paper, and in theory, setting up a CCPM heli is really no more difficult than setting up a Single Servo Mechanical heli. The trick is to be exact in the mechanical setup and to read the radio and helicopter manuals thoroughly. Follow the steps just outlined and that CCPM heli will no longer be a mystery. If more help is needed contact a local club or pilot, | | | |
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