What does 120degree eCCPm mean
03-19-2008 | 02:18 PM
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From: richmond ,
BC, CANADA
What does 120degree eCCPm mean
I just bought a Hummingbird CP elite that requires a RC system with that. I have a Futaba 6EXHP with PCM/PPM(FM) selectable radio control system for Helicopter it has computerized programable helicopter system. Will this be usable in my Hummingbird?
03-19-2008 | 02:36 PM
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From: Edmonton,
AB, CANADA
RE: What does 120degree eCCPm mean
yes you can use that radio.
eccpm stands for electronic cyclic collective pitch mixing, electronic because the mixing is done by the radio. the 120 deg refers to where the balls are on the swashplate, in this case, equally spaced at 120 degrees. There is also 90 deg and 140 deg.
eccpm stands for electronic cyclic collective pitch mixing, electronic because the mixing is done by the radio. the 120 deg refers to where the balls are on the swashplate, in this case, equally spaced at 120 degrees. There is also 90 deg and 140 deg.
03-19-2008 | 03:00 PM
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From: Edmonton,
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RE: What does 120degree eCCPm mean
most ccpm are 120 deg, the disadvantage of 120 degree is that if you look at your heli from the side you'll notice that for elevator control the ball links from the aileron and pitch servos are much closer to the shaft than the front elevator servo, this creates uneven movement sometimes. 140 deg makes it so that all the ball links are at the same distance from the main shaft.
03-20-2008 | 06:08 AM
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From: Town Creek,
AL
RE: What does 120degree eCCPm mean
ORIGINAL: flyinsolo11
What degree does a HBK2 have?
What is the advantage of having different degree 'sizes?'
What degree does a HBK2 have?
What is the advantage of having different degree 'sizes?'
120° means the pitch and aileron attach points (bottom half of swash) are 120° from the elevator attach point. This gives you three attach points (360° / 3 = 120°).
140° swash is just a modified version of the 120° swash. As Druss stated, the 140° swash has the pitch and aileron attach points 140° away from the elevator attach point. This gives slightly more symmetrical elevator and pitch function.
The other common type is 90° in which the attach points are 90° from each other. You could have either 2 or 4 attach points in this case.
90° with 2 attach points (aileron and elevator) is common with fixed pitch helis and helis that generated collective pitch changes via some other mechanism besides the up/down movement of the swash.
The 90° with 4 attach points are usually two aileron and two elevator attach points and the pitch mechanism lifts all four points at the same time. This is commonly called a standard or non-CCPM swash config.
