Problems with motors

C

ccover

Member
I'm having problems getting my motors to spin up correctly. I'm using a KK board which seems to be properly calibrated, turnigy 180w motors, and 20A turnigy plush ESCs. When I throttle up, all motors start at the same time, but when I play with the rudder control and elevator controls, the controls are pretty weird, ie rudder right spins both left and right motors, and rudder left spins either the front or rear motor, whichever had been signalled last. Any ideas? I've gone through my wiring twice, checked the motors, and the motors seem to act correctly when holding the quad and rocking it side to side and back and forward.
 
Mike

Mike

=)
Admin
Rudder & Elevator is controlled by spinning the motors at different speeds. This is normal if all you're saying is that your motors start moving at different speeds when you play with the sticks (other than throttle).
 
C

ccover

Member
Yeah, I understand the physics of it, but the channels are controlling completely different things. The rudder channel is controlling elevators, but only when I rudder to the left, and ruddering to the right spins both the left and right motor faster. I'm using a + formation, so this shouldn't be happening.
 
Mike

Mike

=)
Admin
Ohh, sorry. Understood. It sounds like your channels could be mixed up then. Verify what you have set on your tx to rx, then your connections to the board as far as channel/functionality goes.
 
C

ccover

Member
I've gone in and checked all the channels on the board with the tx, and that the motors are in the same order as the layout the board expects. The weirdest part is that the motors function correctly, or close to correctly, when held in hand and tilting the quad. I don't know what would be mixed up or messed up if that's working while the tx signals aren't. The motors are spinning the correct directions, so it's not a case of reverse thrust.
 
Mike

Mike

=)
Admin
It makes sense that they'd all be working when holding and tilting the quad as long as all of the sticks (other than throttle) are at the 0 position when you're doing that. That tells you that the board is oriented correctly and all of the ESC's/motors are plugged into the correct pins. So the problem definitely has to be between the tx/rx and the board. If all of the functions on your tx are tied to the correct channels and all of the rx channel pins are connected to the board they way they are supposed to be, I can't think of anything else that could be wrong off the top of my head. What mode do you have your tx set to? Is it Acro?
 
C

ccover

Member
I'm using Mode 1 (I'm not sure if 1 or 2 is Acrobatic, this is my first quad) with a Turnigy 6x tx/rx pair. All my signals were reverse, so I switched those on the tx, Mode 1, and Fixed wing, and when I do the receiver test on my board everything seems to work correctly. I haven't found anybody with the same problem anywhere.
 
C

ccover

Member
I'm in Fixed Wing. I switched it from Delta originally because I thought it was changing too many channels with a single motion on the sticks in the receiver test. Is that wrong, or did I have the right idea? And if I don't, when I switch it back to Delta, what else do I change?
 
Mike

Mike

=)
Admin
I think fixed-wing is correct since there is no mixing. I've only used programmable tx's with LCD screens that did acro and heli, so I'm not sure about fixed-wing vs Delta or how that would operate. I just figure the fixed wing settings look the best for quads when reading the manual. Did you follow someone's build for this quad? If so, if they have contact info or something on their blog or youtube channel, it might be worth a shot to ask them, or comment with your question.

Sorry I couldn't help more! I hope you get it worked out. (and hopefully someone else jumps in with the answer here!)
 
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