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Blade mCPX › Pitch problem
03-17-2011 02:54 AM  7 years agoPost 1
kruuuzn

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Traverse City, MI

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After a very minor incident my mCPX has seemed to have lost most of it's positive pitch. It still has lots of negative pitch but at full left stick it barely hovers. It's been flying great up until now.
Has anyone else experienced this problem?

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03-17-2011 04:44 AM  7 years agoPost 2
merlin3

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dayton, ohio

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your main gear has slipped down. push on the top of the head and push up on the main gear and it will kind of snap into place.

Justin - Team Horizon, Team Byron
2-700x, Trex 700n, small helis

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03-18-2011 01:52 AM  7 years agoPost 3
kruuuzn

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Traverse City, MI

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Thanks guy. That was it.

But then after all I've read about the head bearings I thought I better check mine out.
I removed the blades and a LITTLE TINY bearing race fell out into my hand.
Not good.

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03-18-2011 10:41 AM  7 years agoPost 4
kruuuzn

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Traverse City, MI

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Update.

I called Horizon about the bearing issue. They issued a UPS call tag to ship the heli back to them for replacement.

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03-19-2011 09:25 PM  7 years agoPost 5
shihan

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Oneida, N.Y.

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pitch problem main gear inplace
minor mishap.

i m not getting any lift. the main gear is in place everything else seems to be in place. I am using the blades with the bullets. will not lift off the ground...

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03-26-2011 12:07 AM  7 years agoPost 6
pmcderm993

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MN

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My new RTR out of the box will barely lift off with the stock radio. Too much negative pitch out of the box.

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03-26-2011 12:23 AM  7 years agoPost 7
kruuuzn

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Traverse City, MI

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A friend of mine had the same problem. He needed to adjust it so he had zero pitch at mid stick. I don't know exactly what he did but he learned how to do it by reading through all the forums on the subject. He got it to fly great.

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03-26-2011 08:48 AM  7 years agoPost 8
sestcourt

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Berkshire, UK

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Are you/your friend using a DX4e transmitter? If so I had the same problem, because you have no ability to program a pitch curve on the radio you have to do it mechanically on the helicopter. Pop the links off from the servos to the swash and put two - three full turns on each link anti clockwise I.e. making the rod longer (all the rods are threaded to allow for this) Then attach them back to swash and try flying it... If you still don't have enough pitch remove the links again and add an additional turn. Don't over do it though otherwise you'll bog the head with to much positive pitch and when you flip it inverted you'll end up with no negative to play with.

Hope this helps

Steve

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03-26-2011 10:02 PM  7 years agoPost 9
pmcderm993

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MN

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Yes, that is just what I ended up doing--three full turns out. Now I have similar pitch both positive and negative.

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03-27-2011 01:33 AM  7 years agoPost 10
TCP

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Kingsley, MI - USA

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Not using the four using dx6i so we can adjust curvs, it was the board!

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03-27-2011 04:06 AM  7 years agoPost 11
dcbusdriver

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Stephens City,VA -USA

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If you are using the DX4e make sure to run the throttle trim all the way up or you will not get full positive pitch.

beating the air into submission...........cool!

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03-27-2011 11:50 AM  7 years agoPost 12
kruuuzn

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Traverse City, MI

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TCP

Are you saying you had to replace the board?

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08-21-2011 05:29 AM  6 years agoPost 13
spoolemup

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NJ - USA

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New Blade MCPx Pitch Problem
Has anyone encountered this?
I have a new blade MCPx BNF with the DX4e radio at IRCHA. I felw it for 5 flights, no crashes or hard landings.. I went to try it today and I cannot get any positive pitch on the head. I thought maybe something got messed up with the binding. so i Re-bounded it via the instructions. Still no positive. NOTE: It mentions something in the manual that states, IF YOU PRESS THE TRAINER BUTTON AND THE HEAD GOES UP AND DOWN, THE HELI IS IT COMPUTER RADIO MODE AND TO RE-BIND IT. The head does give full positve when I press the traininer button. So 1, how did the heli all of a sudden get to computer radio mode? and 2, the head can move to full pitch if givin the correct signal from the tx, what could have changed? Any thoughts?

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08-21-2011 12:26 PM  6 years agoPost 14
pH7

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Sterling Heights, MI - USA

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There are 2 sets of binding instructions in the manual. Did you follow the one for non-computer radio?

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08-21-2011 04:58 PM  6 years agoPost 15
bigben1165

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grand rapids, michigan

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i had the same problem with the stock DX4e radio. if you plug in the battery before the turning on the radio, it will go into bind mode and automatically set in computer mode so you need to rebind for non-computer mode. i also found that if you plug in the battery and the bird is too close to the radio, sometimes it also switches to computer mode and you need to rebind it.

it happened more and more so i bought a DX6i and am much happier with the radio.

big ben - e550 fbl - DX6

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08-21-2011 05:02 PM  6 years agoPost 16
spoolemup

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NJ - USA

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Answer to PH7:
Yes, I used the one for non-computer radio..
Also note, the machine is boundt because I get cyclic and tail when I move the sticks. I would think if it was not, I should'nt get any controlls at all.

I really find it odd that IF I do push the Trainer Button, the swashplate goes full positive, but when I release it, it goes back to negative. Going by what it says in the book, that means my heli, somehow, is in computer radio mode..

Is that locgial to say?
If so, How do you get the heli out of computer-radio mode?

Thanks

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08-21-2011 05:07 PM  6 years agoPost 17
spoolemup

rrApprentice

NJ - USA

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To: bigben1165

Intresting.. I will try and re-bind it again with the radio across the room..

I'm glad I took the precaution to lock the heli down during the binding process, if not, i would have be reparing more than this issue..

Thanks for the info.. I'll post my results..

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08-21-2011 05:56 PM  6 years agoPost 18
spoolemup

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NJ - USA

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Tried 8 times to re-bind it from across the room and it still looks to give me only cyclic and tail controls.. No change for pitch..

I also see that this fouled up action looks to be coming from the radio itself because when I shut the radio down, the heli gives me 0 pitch, and when the button IS pressed, I get full positive pitch, no proportional control..

I also noticed something about the radio. If I hold the trainer button down and give it throttle, the heli spools up at full pitch with cyclic and rudder control. Shouldn't the radio be giving signals to the trainer radio when that button is down?

I wonder if there is something that can be done to reset the radio to factory defaults.

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08-21-2011 06:27 PM  6 years agoPost 19
bigben1165

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grand rapids, michigan

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geez, you have all sorts of sh*t going on now. let me think about this one a bit.

big ben - e550 fbl - DX6

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08-22-2011 01:02 AM  6 years agoPost 20
spoolemup

rrApprentice

NJ - USA

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Just found a thread on Helifreak that explained it.
This is from a guy named KTS.. I plan to register with Helifreak just to tell this guy thanks.. Thanks to you guys too of course.. Anyone have this issue, read below.. I just hovered it in my computer room after all day of trying to get this to work.

The whole key to binding the MCPX is to move the rudder stick left after exactly 2 flashes of the LEDs and then release the bind button, now wait for the blue light to go solid HOLDING THE RUDDER. Pull the battery and turn off the transmitter and next time up everything should be OK. The key is you have to be fast at the second flash to get it right. I fly with the DX4e exclusively right now and notice that on occaision it will go into computer mode randomly, one time after a successful flight and simply changing batteries. I hope that this helps.

Thanks guys.. This is what makes this hobby F_king RULE!!!

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