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HomeAircraftHelicopterBeginners Corner › ccpm?
12-13-2004 01:02 AM  13 years agoPost 1
FDNY260

rrNovice

Suffolk County New York

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just wondering what ccpm is and how it differs from other radio systems?

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12-13-2004 01:28 AM  13 years agoPost 2
Saint728

rrProfessor

Honolulu, Hawaii

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Since you are new here on RR I would like to suggest that you use the Search feature we have here to find the information your looking for, before you ask a question here. The search button is located at the top of the page. Click on it and write in what you are looking for. It will show all posts that contain the information you asked for.

Here are some explanations of what CCPM is. http://runryder.com/t116023p1/
http://runryder.com/t84065p1/
http://runryder.com/t92154p1/

Take Care,
Cheers, Patrick

Check the hotties in my Gallery
http://rc.runryder.com/helicopter/gallery/9019/?all=photo

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12-13-2004 01:29 AM  13 years agoPost 3
Bobby Watts

rrVeteran

Orlando, FL

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Cyclic Collective Pitch Mixing

On a helicopter with a non- ccpm type of setup one servo controls the collective alone, another controls aileron alone, and the other controls elevator alone. Raptors, Freyas, Sceadu's (well... atleast some) are standard servo collective helicopters.

CCPM... with a radio program, you mix all 3 servos to act as the collective servo, aileron, and elevator servo. This is a more precise way of achieving collective and cyclic control.

The Furys, Vigors, Predators, and probably some more are examples with a CCPM type of setup.

Hope this helps,
Bob

www.bobbywatts.com

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12-13-2004 05:43 AM  13 years agoPost 4
okw14

rrApprentice

Morgantown, WV

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I'd just like to make one clarification...

Practically all collective pitch heli's use Cyclic/Collective Pitch Mixing (CCPM). The mixing is performed by the swashplate which tilts on cyclic inputs and slides up and down on the mast on collective inputs. One exception that I can think of quickly is the Nexus on which the swashplate does not control collective. The difference between the heli's that most people consider CCPM and the others is in the method used to control the swashplate.

With the systems widely called "CCPM", the inputs to the swashplate come from 3 (or 4) servos each connected to individual balls on the swashplate. The mixing commands then come from the radio which mixes 3 (or 4) channels to allow the servos to work together to get the desired result; i.e., all servos up = increase collective. This form of mixing is known as electronic CCPM or eCCPM.

The "other" method of controlling the mixing employs a single servo for each input; one for elevator, one for aileron and one for collective. The mixing is done by way of mechanical linkages on the helicopter. The aileron and elevator servos control the tilt of the swashplate through pushrods and bellcranks and the collective servo operates linkages which raise and lower the aileron and elevator bellcranks simultaneously to raise and lower the swashplate. This form of mixing is mechanical mixing or mCCPM.

This is not to say that what others have posted is incorrect. As I mentioned above, most pilots (myself included) often refer to the electronic form of mixing as simply CCPM.

CCPM in a nutshell.

Keith

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12-16-2004 11:29 AM  13 years agoPost 5
nyhelifan

rrNovice

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CCPM... with a radio program, you mix all 3 servos to act as the collective servo, aileron, and elevator servo. This is a more precise way of achieving collective and cyclic control.

Example will be the eSky 3D helicopter. I had one and I like it. Not going to tell the link of the website I made the order. But I got it for US$ 200 and you can try to use google.com, shopping.com or bizrate.com to find the good deal.

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