Originally Posted by helisb

My GCP starts spinning clockwise, out of control, as soon as I throttle up. When I give rudder in the clockwise direction I get lots of tail thrust, in the other direction very little (does the tail spin in only one direction or should it reverse? Didn't think to check when it worked fine). I have gone through the radio transmitter set up to make sure all OK, and I have replaced the tail (including the tail motor). This happened suddenly but I can't relate it to a crash. I have certainly crashed, but no major impacts. I suspect that something is wrong with the receiver. I have visually inspected the receiver, can't see any evidence of trauma or anything loose or out of place. Any trouble shooting ideas/suggestions would be appreciated.

Thanks,
Sven

My first question is what is the main blades doing are they spinning right? enough power to fly? Main motor pinion not slipping on the motor shaft?

Originally Posted by livonia bob

My first question is what is the main blades doing are they spinning right? enough power to fly? Main motor pinion not slipping on the motor shaft?

The main blades are spinning normally, generating power to fly. The main gear is not slipping.

Sven

Originally Posted by helisb

The main blades are spinning normally, generating power to fly. The main gear is not slipping.

Sven

Then unless you have screwed up the rudder gyro setting in the TX looks like you might have a problem with the RX.. When you twist the heli in your hand does it feel like the rudder is trying to fight you?

Originally Posted by shastamike

Farmer Dave made the video but it disappeared and so did Dave. Dave are you out there?
The main idea was to take out the motor so the main blades spin freely. Bind the heli. Probably want to switch the RX to "adjust" and don't forget to set it back when done! One then spins the head and blades by hand while moving the TX cyclic controls to the extreme edges and corners. If there is binding it becomes very apparent because the rotor will slow down or seize. The adjustment is made by using travel adj. on the TX. So if you push the elevator stick all the way forward and you get binding you decrease the elevator travel. Seems like I was moving in 5or 10% increments. Next move the lever towards the elevator and aileron (the upper right corner) adjust for that. Go around the "square" of the cyclic. I only had binding of my elevator down and aileron right. got a bit more flight time as I wasn't bogging down my gutless brushed motor when cranking tight turns. Don't know how much effect it will have on a brushless motor though.
Dave...I miss you. Thank you for all your great advice.
Mike

Thanks Mike. I'll give it a try soon.

Originally Posted by helisb

The main blades are spinning normally, generating power to fly. The main gear is not slipping.

Sven

Have you unplugged both motors from the RX at any given time? Almost sounds to me like you have the tail motor and the main motor plugged in the wrong socket, as in, the tail motor is plugged in where the main motor is supposed to be plugged in and the main motor is plugged in where the tail motor is supposed to be plugged in. Try swapping them to see what happens.

Chris

Originally Posted by bobepine

Have you unplugged both motors from the RX at any given time? Almost sounds to me like you have the tail motor and the main motor plugged in the wrong socket, as in, the tail motor is plugged in where the main motor is supposed to be plugged in and the main motor is plugged in where the tail motor is supposed to be plugged in. Try swapping them to see what happens.

Chris

Chris and Bob,

Thanks for your suggestions.

The setup in the TX is good, checked again, the tail rudder is countering (fighting) movement in one direction. Is the tail propeller spinning in one direction only?

I have not unplugged both main and tail motors and I get response on the main rotor from throttle stick and tail rotor from the rudder stick.

Sven

Well the issues are that first like everyone else who's attempted to make the dual brushless kit work the tail is posessed. I can live without the brushless tail if I have to....Second is after I went back to the brushed tail it will not hold with the brushless main. Every slight or major punch causes it to blow out. Absolutely un-flyable unless you just want to hover. Any thoughts? Batteries are Hyperion 240's so it should have plenty of juice. I can't
find anyone who has made it work!

Tried all types of tailblades also and none make a significant difference.

have you tried the new tail rotor for the Minicp ? it has lots more pitch and is a bit shorter...holds very nice

Originally Posted by helisb

Chris and Bob,

Thanks for your suggestions.

The setup in the TX is good, checked again, the tail rudder is countering (fighting) movement in one direction. Is the tail propeller spinning in one direction only?

I have not unplugged both main and tail motors and I get response on the main rotor from throttle stick and tail rotor from the rudder stick.

Sven

Is the tail propeller spinning in one direction only?
Yes

Try removing the tail rotor, as soon you give throttle heli will spin CCW. Air pushing on main blades. The higher the speed of rotation of main blades, the higher the pitch, the higher the force on the blades (push heli to turn CCW) and the higher the tail rotor has to spin (higher trust) to counteract the torque of the main blades.

Edit : What is the gyro gain on your Tx and what is the Rudder Travel Adjust in Tx

Originally Posted by magic_marty

have you tried the new tail rotor for the Minicp ? it has lots more pitch and is a bit shorter...holds very nice

Witch brushless motor do you have and what ESC do you use and where did you buy it ?

Wow 3 questions in one sentence.

Man I love my GCP! The weather being so dang nice today and yesterday, I ran only 3 bats in her yesterday, but today I ran 6 thus far, I am sure I will run another 3 in an hour or so. Earlyer the wind was real calm and made for some nice flying, I even accidentally did a tail up funnel (was taking a turn with way too much rudder and it turned into a funnel ), here just a moment ago I was flying in much windier conditions but still not too bad.

I am coming to a point where I feel I could use a little more response from the controls! I always feel like the tail is fairly slow (I still have yet to put high pitch prop on), and I feel elevator could be a tad faster... this entire time I think I have been flying something like 30% expo on ail and elev, with none on rudder, and linear for throttle and pitch, though my last 5 flights or so I have been putting her in mode 2 which is no expo on anything, but she still feels like she could be a little more responsive...

Anyone have any ideas?

Originally Posted by Batch1

Witch brushless motor do you have and what ESC do you use and where did you buy it ?

Wow 3 questions in one phrase.

C05 motor and the 10LT walkera esc bought them from wowhobbies... they also have the new tail rotor which cost less then the stock tail rotor...

Originally Posted by NorCalMatCat

Man I love my GCP! The weather being so dang nice today and yesterday, I ran only 3 bats in her yesterday, but today I ran 6 thus far, I am sure I will run another 3 in an hour or so. Earlyer the wind was real calm and made for some nice flying, I even accidentally did a tail up funnel (was taking a turn with way too much rudder and it turned into a funnel ), here just a moment ago I was flying in much windier conditions but still not too bad.

I am coming to a point where I feel I could use a little more response from the controls! I always feel like the tail is fairly slow (I still have yet to put high pitch prop on), and I feel elevator could be a tad faster... this entire time I think I have been flying something like 30% expo on ail and elev, with none on rudder, and linear for throttle and pitch, though my last 5 flights or so I have been putting her in mode 2 which is no expo on anything, but she still feels like she could be a little more responsive...

Anyone have any ideas?

try +expo or move the links to the outside hole on the servos...just be sure to check the endpoints and make sure the servos aren't binding if you move the links out..

Originally Posted by NorCalMatCat

Anyone have any ideas?

I'd suggest trying some negative expo and maybe have a look at manny's settings for the mini. http://www.rcgroups.com/forums/showp...&postcount=522

Originally Posted by NorCalMatCat

Man I love my GCP! The weather being so dang nice today and yesterday, I ran only 3 bats in her yesterday, but today I ran 6 thus far, I am sure I will run another 3 in an hour or so. Earlyer the wind was real calm and made for some nice flying, I even accidentally did a tail up funnel (was taking a turn with way too much rudder and it turned into a funnel ), here just a moment ago I was flying in much windier conditions but still not too bad.

I am coming to a point where I feel I could use a little more response from the controls! I always feel like the tail is fairly slow (I still have yet to put high pitch prop on), and I feel elevator could be a tad faster... this entire time I think I have been flying something like 30% expo on ail and elev, with none on rudder, and linear for throttle and pitch, though my last 5 flights or so I have been putting her in mode 2 which is no expo on anything, but she still feels like she could be a little more responsive...

Anyone have any ideas?

What are your gyro pots set at and the extend pot?