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HomeAircraftHelicopterHelicopter Main Discussion › Raptor and MX24
04-16-2018 10:45 PM  5 months agoPost 21
TMoore

rrMaster

Cookeville, TN

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Are you using a 3 servo or 4 servo CCPM scheme?

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04-17-2018 05:28 AM  5 months agoPost 22
Damper

rrVeteran

Point Blank TX USA

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Here is a few mishaps that might also cause this

1 make sure you did not change the mode of the radio. It should be on 2

2 check and reset your throttle and pitch curves to default settings

3 you might need to reset your receiver back to factory.

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04-17-2018 01:06 PM  5 months agoPost 23
dkshema

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Cedar Rapids, IA

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There seems to be confusion here on how your swash should be controlled. Some speculate you have a three or four servo supported swash and therefore need electronic mixing (CCPM) in the TX to get everything moving correctly, others assume you have a stock Raptor 90 where one servo tilts the swash fore and aft (elevator), one tilts it left and right (aileron), and one pushes/pulls a lever that raises/lowers the swashplate for collective pitch.

Of those two possibilities, which one is it?

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04-17-2018 01:16 PM  5 months agoPost 24
dkshema

rrMaster

Cedar Rapids, IA

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If this heli is truly a stock Raptor 90 with a standard swash control (one servo per axis control), only one servo should move when you apply fore/aft cyclic, and left/right roll cyclic.

When you advance or retard the throttle stick, the collective pitch servo and throttle servo should move.

Any movement other than described above is an indication your TX is in an incompatible setup mode.

-----
Dave

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04-17-2018 06:19 PM  5 months agoPost 25
AdeH

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Kent, UK

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Gentlemen
Firstly thank you all so very much for all your help. It should be so simple...shouldn’t it???
Dave it is a stock R90 with as described 3 servos to control the swashplate. The rear linkage is all part of the mechanics.
I have the throttle servo running lovely, the pitch only travels half the distance of the throttle.
As soon as I connect the servo at the top and push the throttle stick up, the throttle moves fine, the pitch half as much (so no change to them) but now the servo on top turns causing the swash to tilt to one side

After scale everything else is a toy!

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04-17-2018 06:39 PM  5 months agoPost 26
JuanRodriguez

rrProfessor

The Villages, Florida

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As previously mentioned, your swash type is probably not set correctly.....

Been there, done that and old enough to know better.....

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04-17-2018 06:45 PM  5 months agoPost 27
TMoore

rrMaster

Cookeville, TN

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AdeH
Gentlemen
Firstly thank you all so very much for all your help. It should be so simple...shouldn’t it???
Dave it is a stock R90 with as described 3 servos to control the swashplate. The rear linkage is all part of the mechanics.
I have the throttle servo running lovely, the pitch only travels half the distance of the throttle.
As soon as I connect the servo at the top and push the throttle stick up, the throttle moves fine, the pitch half as much (so no change to them) but now the servo on top turns causing the swash to tilt to one side
Do you have a photo of the setup?

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04-17-2018 06:47 PM  5 months agoPost 28
TMoore

rrMaster

Cookeville, TN

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AdeH
Yes done all that!
I’m trying to get the right combination of plugs into sockets on rx AND then the wizard only gives 120, 140 and 90 but only 3 servo not what is in effect 4 point ccpm that the raptor has.
Basically all servos work but all in the wrong order when working together. If that makes sence?
This is what is confusing me.

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04-17-2018 06:48 PM  5 months agoPost 29
dkshema

rrMaster

Cedar Rapids, IA

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Your radio needs to start out as if you were going to fly an airplane. Elevator gives you full travel back and forth, nothing else moves

The aileron needs to move full travel and nothing else moves

ThrottLe gives full travel, nothing else moves.

Rudder gives you full travel, nothing else moves.

Servos plugged into the unused channels stay put no matter what happens to those four basic control functions.

No mixing, no exponential, no nothing extra.

Start with that, we'll go from there.

-----
Dave

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04-17-2018 07:12 PM  5 months agoPost 30
dkshema

rrMaster

Cedar Rapids, IA

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Why are you trying to use 4 point CCPM mixing when it not needed?

If you can simply select 1 Servo per axis control, then enable heli mode that slaves throttle to collective, you're done and the setup is so easy that even a caveman could do it.

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Dave

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04-18-2018 03:35 AM  5 months agoPost 31
dkshema

rrMaster

Cedar Rapids, IA

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So I downloaded a copy of the MX24 manual...quite a fancy radio, but it doesn't seem to be able to understand a simple, non-CCPM heli.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

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04-18-2018 04:36 AM  5 months agoPost 32
TMoore

rrMaster

Cookeville, TN

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I have the radio here and single servo collective is the default. Pitch is CH1 and roll is CH2 while nick/ele is CH3.

Looking at the servo outputs I see no reason that a Raptor can't be flown with the radio.

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04-18-2018 11:53 AM  5 months agoPost 33
Damper

rrVeteran

Point Blank TX USA

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Here is another thought .

Do have this particular model in global?

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04-18-2018 09:14 PM  5 months agoPost 34
AdeH

rrVeteran

Kent, UK

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You absolute star!
I re-entered it all as a fixed wing plane and its perfect FIRST GO!
Thank you all sooo much
One very happy (relieved) old fart!
Lets go fly this baby!!!
Oh *^%# its dark!
Oh well tomorrow morning it is!!
Have a great day guys

After scale everything else is a toy!

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04-19-2018 01:35 AM  5 months agoPost 35
JuanRodriguez

rrProfessor

The Villages, Florida

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Dave gets the big star on his forehead !!!!

Dave, you're running out of space on your forehead !!

Been there, done that and old enough to know better.....

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04-19-2018 02:05 AM  5 months agoPost 36
dkshema

rrMaster

Cedar Rapids, IA

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I don't post as often as I used to, but it's nice to know I can still get things right! The user manual for that TX is quite a handful to read on my Samsung Galaxy S4. As always, I'm happy to help a fellow flyer.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

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04-19-2018 05:24 AM  5 months agoPost 37
TMoore

rrMaster

Cookeville, TN

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If you fly a single servo collective machine like an R90 on airplane mode there is no pitch curve only throttle curve. Pitch would have to be controlled by end points as all the helicopter functions would be inactive. At least that is what I'm seeing on my radio.

Here is what was going on. I received this from Adrian last night.

Watch at YouTube

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04-20-2018 12:04 AM  5 months agoPost 38
Damper

rrVeteran

Point Blank TX USA

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That does not seem right putting it in airplane and slaving it to heli mode sounds like corrupted software or the wrong firmware bug. This does not walk like a duck.

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05-05-2018 07:50 PM  4 months agoPost 39
MobileRaptor

rrVeteran

Orange, Texas

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I'm no expert on your radio but, I do know a little about Raptors. If you are using any swash plate setting that has the term CCPM anywhere in it, it's not going to work with a Raptor. Raptors us a standard swash plate setting. No CCPM. CCPM "Cyclic/Collective Pitch Mixing" is a computer software that make 3 servo's work together to preform the movements of a 90/120/140 degree CCPM swash plate.

The Raptor does not use CCPM. It used a standard swash setting. One servo does one function. The elevator servo control pitch up and pitch down, the aileron servo controls yaw rudder servo control the tail rotor, throttle the engine and aux the pitch.

The Raptor was one of the last of the Standard swash plate helicopters before CCPM took over. You could (if you wanted) control a raptor with a standard 4 channel radio. All you need to make it fly was a rate mode gyro and a "Y" harness. Plug the rate mode gyro into the rudder channel and plug the tail servo into the gyro and set the setting. as for the "Y" harness it got plugged into the throttle channel and the throttle servo and the pitch servo got plugged into the "Y" harness. The rest was mechanical set up.

When you advanced the throttle the engine revved and the pitch increased.

If you were so lucking to have a computer radio, 6 channels or better then you could get into throttle and pitch curves and different mixes to control interaction between the different controls. The computer radio is what allowed CCPM to come into existence.

I don't know if your radio has a Standard Swash setting in it but this is what you need to make it work.

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HomeAircraftHelicopterHelicopter Main Discussion › Raptor and MX24
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