| It's true, nearly all radio controlled helicopter | | | | goes without saying that adds to cost and mass. This |
| advertisement that you see nowadays brags about | | | | tactic of pitch control also puts a lot of strain on the |
| their chopper having 120 or 140 "CCPM". Could it be a | | | | pitch servo. It not only has to move the entire swash |
| stunt? A trick, perhaps the latest marketing buzz word. | | | | pate up and down to change the pitch angle of the |
| I'm proud to say that the answer is no. It actually is an | | | | main rotor blades, it has to overcome all the friction |
| enormous bonus. It completely simplifies the flying life | | | | associated with all the linkages. Mechanical mixing does |
| for you, makes your servos blissful, and makes your rc | | | | encompass a few advantages, such as no complex |
| helicopter fly even better. I'm going to better help you | | | | "swashplate" setup to elude change issues and for the |
| understand what CCPM stands for and what it does... | | | | reason that the servos are regularly mounted in a |
| The benefits will then turn out to be obvious. It is a | | | | servo tray and not in the frame of the helicopter, they |
| short nickname that stands for... | | | | are open to less vibration. These are negligible benefits |
| Cyclic-Collective-Pitch-Mixing. This feature is only found | | | | considering that these days servos are much stronger |
| on Radio Controlled helicopters & it doesn't apply | | | | and presently there are ways to almost cut out swash |
| to fixed pitch helicopters. I ought to point out that you | | | | plate turnover with a good computerized and |
| will now and again see CCPM talked about as | | | | programable radio and knowledge of the proper setup |
| electronic or mechanical mixing. While this is basically | | | | agendum. |
| proper, I feel it adds far too much turmoil. Considering | | | | Cyclic-collective-pitch-mixing (C-C-P-M) is simply |
| that authentic C-C-P-M is only made electronic, that's | | | | achievable because of advances in computerized |
| how it will be referred to in this article. | | | | radio controlled knowledge. The mixing features are all |
| Until C-C-P-M came into the scene, we simply called | | | | completed electronically inside the radio and the servos |
| the mixing tactic mechanical. A way to administrate | | | | all work together and move accordingly. Nowadays |
| the pitch function and cyclical function by way of a | | | | two, three, or on occasion four servos can be hooked |
| complicated sequence of linkages and levers. | | | | precisely to the swash plate with out any complicated |
| Generally the systems were made by mixing the | | | | mixing linkages. This of course makes the helicopter |
| collective pitch (CP) servo actions with the left and | | | | simple, reduces the amount of parts, substance, and |
| right cyclical servo and the fore and aft cyclical servo | | | | money. There is a smaller amount slop in the structure |
| actions to the swash plate. The large disadvantage | | | | and this provides very clear-cut control of your |
| with some forms of mechanical mixing comes from all | | | | helicopter. The drawback of unwarranted strain on the |
| the linkages and levers; there is forever a bit of slop or | | | | pitch servo is also no more. Not only because the |
| have fun in them. This can be minimized on excessive | | | | linkages are gone, but in addition because the work |
| modeled helis by using the simple ball bearings on all of | | | | load is currently spread over two or possibly more |
| these levers instead of straightforward bushings, but it | | | | servos. |