hope someone can help
I have been trying to get the eccpm setup on my mini titan E325 ,and I can't get it right. I have a JR 6102tx and 770 rx I put JR small heli servo set 3 ds285 and the 3400 for tail .I got it all setup and leveled the swash and it all looked pefect ,but when I give full throttle the swash moves up witch is -pitch and when I change the servos to get the swash to move down + pitch I can get left and right good but fro and aft are wrong ,I can get for and aft right then left and right are wrong. I know that it must be some simple fix but being new to eccpm I can't get it


If you can help thanks rvmach50

The mini titan is a nightmare to set up with the reverse polish pitch. What I finally did was set my radio to all normal and +50 the did one servo at a time, checking to make sure it moved the right way for pitch and cyclic, then I moved on to the next servo. I have Hitec servos and a Futaba radio but here is what I finally ended up with.

Rotation
channel 1 = normal
channel 2 = rev
channel 3 = rev
channel 4 = rev
channel 5 = rev
channel 6 = rev

Swash
channel a = +50
channel e = +50
channel p = -50

Before setting a heli with a 120° swash config (CCPM), you need to understand the difference between the swash CHANNELS and the swash FUNCTIONs. Both are called Aileron, Elevator, and Pitch so initially it is a little confusing.

The swash FUNCTIONS is what the swash does to manipulate the rotor head to get the heli to fly. If you were to compare swash FUNcTIONS between CCPM and non-CCPM ... you would find they are identical. How the FUNCTIONS are accomplished is where the differences show up.

With CCPM (120° in this case), for any particular FUNCTION, two or more CHANNELS are used to accomplish the FUNCTION.

Take the pitch FUNCTION (raising and lowering the swash on an level plane) requires the use of all three swash CHANNELS.
So, with the pitch FUNCTION, the aileron, elevator, and pitch CHANNELS are called to action.
With the elevator FUNCTION, again all three channels are used.
With the aileron FUNCTION, only two CHANNELS are used ... Aileron and Pitch.

There are three areas in the TX that control the swash: 1) SWASH TYPE, CHANNEL reversing, and FUNCTION reversing. CHaNNEL and FUNCTION reversing do NOT accomplish the same thing (unless you have a non-CCPM swash config).

How do you know whether to reverse a CHANNEL or reverse a FUNCTION? Depends on where you are in the setup of the swash control.

Basically, its done in two simple steps:
(1) get the servos playing nice with each other first (reverse CHANNELS as required) ... then
(2) get the servos playing nice with the stick movements (reverse FUNCTIONS as required)


The following assumes two things: (1) the elevator attach point is aft of the swash (some helis have the elevator point forward of swash), and (2) if on an electric heli, you either have disconnected the motor from the ESC or you have disconnected the ESC from RX and are powering the RX by an alternate method (ie standard 4 cell pack). This is for your safety because you are about to manipulate the collective pitch function which also manipulates throttle. You don't want your heli to spool up while you are working on it.

The problem I see most beginners do is they try to perform BOTH steps at the same time. The try to get the cHANNELS set correctly AND at the same time try to get the direction (relative to stick direction) correct. This compounds the frustration because as you reverse CHANNELS to get one FUNcTION and direction correct ... it causes a different FUNCTION to go south. Then you go chasing after that problem. So it seems you are on a never ending chase to get the swash to work right.

If you break the procedure down into to 2 separate steps and do only ONE AT A TIME ... the procedure will work. If you try to do both steps at the same time ... you'll chase your tail for a long time ... reversing channels and reversing functions to no end.

Do the following steps ... ONE AT A TIME.


OK ...
STEP ONE: Get the servos working correctly relative to the other two servos...

Pitch function: Why pitch function first. It uses all 3 CHANNELS and it's easier to tell if something is wrong (swash will tilt if not setup correctly).
Move the collective stick full forward. What did the swash do? If it stayed on a level plane (regardless of direction of travel), then skip to Elevator FUNCTION. The direction the swash moved relative to stick direction will be fixed in STEP TWO. As long as it stayed level ... it's good.
What if tilted? EX: You push forward and the aft (elevator) went up and the pitch/aileron went down. A beginner would say elevator is good and try to reverse both pitch and aileron channels .... WRONG! Remember STEP ONE is to get the servos working correctly ... relative to each other ... PERIOD. Worry about direction of travel in STEP TWO and you ain't in STEP TWO.
In this case, the elevator is the "oddball" channel. If you reverse the elevator channel then ALL of the channels would move in the same direction relative to each other and that's all that is needed ... IN STEP ONE!!

So, in this pitch function test, you will have only two results: (1) swash stays level (regardless of travel direction) or it will tilt ... in which case there will ALWAYS be ONE channel not playing nice with the other two. REVERSE the ODDBALL CHANNEL and you will have a pitch function that stays level ... which is good ... for STEP ONE.

The good thing about this is ... once the CHANNELS are working nice with each other ... the likelihood of needing to reverse a channel in another function is pretty slim ... but check the other functions anyway.

Elevator Function: The elevator FUNCTION makes use of ALL three CHANNELS also. What to expect from a correct setup??
BOTH the aileron and pitch attach points should move in the opposite direction as the elevator attach point (regardless of direction of tilt). If you got the Pitch Function working in the previous step ... the elevator FUNCTION will probably be correct too. But if not ... always reverse the oddball channel ... the one that didn't move in the right direction relative to the other two. If it tilted left right then either the pitch OR aileron needs reversed (which ever one move the same as elevator). If you get what appears to be a Pitch FUNcTION (all moving in the same direction) then reverse the elevator CHANNEL (the one that didn't move correctly relative to the other two).

AILERON FUNCTION: Pitch and Aileron should move opposite each other and elevator should not move at all.
If at this point the two attach points move together, you didn't do the pitch and/or elevator test correctly ... start over at pitch and do it again. Again ... this only applies to how the attach points move relative to each other ... regardless of which way it moved relative to stick direct.


STEP TWO: FUNCTION to STICK direction

At this point ... STEP ONE should be complete and servo movements relative to each other completely verified to be correct. If not, don't bother with STEP TWO and go back to the beginning of STEP ONE and start over. Only when you are completely confident in the completion of STEP ONE should you start STEP TWO.

Get out of the CHANNEL reversing menu and get into the FUNCTION reversing/rate menu (ie this is called AFR, Adjustable Function Rate, in Futaba speak). Find the equivalent menu in your TX.

You've been itching to make things right between FUNCTION and stick direction so here's your chance.
In the AFR (or SWASH or SWAH or whatever) menu, there general is 3 settings (Futaba defaults to +50%), one for each function (pitch, aileron, and elevator). The polarity of the setting is how the function is reversed. The %% of the setting, it's rate. We will deal with just changing the polarity ... the rate is beyond the scope of these instructions.

Pitch FUNCTION: First you need to know which way the swash needs to move to create a positive increase in pitch (up or down). Most swashes move up to create more positive pitch. Your heli may be different so verify this first. Let's assume a normal swash raises to get more positive pitch.

Push the collective pitch (throttle) stick forward. If the swash lifts .. you're good. If it lowers ... the FUNCTION needs reversed. Take note of the polarity and value of the pitch setting in the AFR menu. If its +50% change the setting to -50%. Reversing the polarity, reverses the function direction.

Aileron and Elevator: Same as for Pitch ... if it moves in the wrong direction, change the polarity of each FUNcTION as required.

BTW ... your done.

THANKS FOR THE HELP
I ALSO LOVE TO BUILD BUT STILL LEARNING ABOUT ECCPM , BUT I ALSO LOVE THE TO FLY ( NOT THAT GOOD YET BUT I'LL NEVER GIVE UP !! I HAVE PRINTED THIS INFO AND WILL START OVER . I LOVE MY NON ECCPM BUT I WANT TO LEARN MORE ABOUT ECCPM


I LIKE THE HELI PEOPLE i CAN ALWAYS GET HELP . i HAVEN'T FOUND ANY HELI PILOTS WERE I LIVE BUT HAVE BEEN ABLE TO START SOME NEW ONES .


THANKS VERY MUCH