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Old Sep 17, 2012, 03:39 PM
Bunch of RCs,can't fly 1/2
United States, CA, Long Beach
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Quote:
Originally Posted by johnnyrocco123 View Post
My MCPX barely has enough power to get off the ground. It does not respond to idle up anymore. Is there something else I should check before assuming the motor is bad?

checked

pitch on blades looks good

main gear on pinion

main shaft not moving

batteries are good
Try putting it on throttle hold, and moving the throttle from 0-100% to see if the servos are moving enough. Try changing blades, and try taking the main gear off, then throttling from 0-100 to hear if the motor seems to run up to 100. Good luck
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Old Sep 17, 2012, 06:02 PM
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Quote:
Originally Posted by johnnyrocco123 View Post
My MCPX barely has enough power to get off the ground. It does not respond to idle up anymore. Is there something else I should check before assuming the motor is bad?

checked

pitch on blades looks good

main gear on pinion

main shaft not moving

batteries are good
How about changing the main motor?
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Old Sep 17, 2012, 06:03 PM
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Quote:
Originally Posted by joker24458 View Post
Yes it does help

I thought that I was supposed to do something on the transmitter thanks.

-joker
Sweet!
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Old Sep 17, 2012, 06:25 PM
Team Mulikow
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Joined May 2007
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Quote:
Originally Posted by johnnyrocco123 View Post
My MCPX barely has enough power to get off the ground. It does not respond to idle up anymore. Is there something else I should check before assuming the motor is bad?

checked

pitch on blades looks good

main gear on pinion

main shaft not moving

batteries are good
Is this after a crash? If so double check the main gear, (I realize you have already checked it but double checking never hurts). A lot of the times the main gear will still be on the main shaft but will slip down. Even if it slips by a fraction of an inch the heli will act like you have to push the throttle stick all the way forward to get it off the ground. There should only be about 1/16" gap between the main gear and the bearing. Conversely if you pushed the main gear up and pressed it too tight on the bearing it will act as if you have no power and won't lift off the ground.

You also mention that it does not respond to idle up any more. Can you be more specific? Does the motor stop when you go in to idle up, or what exactly is happening?
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Old Sep 17, 2012, 07:09 PM
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United States, MA, Rutland
Joined Oct 2011
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Quote:
Originally Posted by johnnyrocco123 View Post
My MCPX barely has enough power to get off the ground. It does not respond to idle up anymore. Is there something else I should check before assuming the motor is bad?

checked

pitch on blades looks good

main gear on pinion

main shaft not moving

batteries are good
Any radio settings that can be upped?
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Old Sep 17, 2012, 07:26 PM
Heli Mad
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Australia, VIC, Elsternwick
Joined Feb 2002
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Check that the flat on the main gear is lined up as well.
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Old Sep 17, 2012, 07:27 PM
Heli Mad
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Weird that it doesn't respond to idle up have you tried rebinding?
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Old Sep 17, 2012, 08:24 PM
You down with EPP?
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Houston, Tx
Joined May 2009
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Quote:
Originally Posted by stevebarrow View Post
Weird that it doesn't respond to idle up have you tried rebinding?
When I flip idle up, nothing happens, not pitch change, the motorr keeps going as if nothing happened. It takes full throttle to keep the heli a few inches off the ground. The main gear is good. I guess I will look over a few more things ans then assume it's the motor.



No wreck involved. One day it worked, and then it didn't.
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Old Sep 18, 2012, 12:23 AM
Just fly
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Australia, VIC, Glen Waverley
Joined Jan 2011
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what battery are you running and how many cycles have you done on it? Also how many mins do you fly for and what it the end voltage when you finish your flight?
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Old Sep 18, 2012, 06:33 AM
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Joined May 2007
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Quote:
Originally Posted by johnnyrocco123 View Post
When I flip idle up, nothing happens, not pitch change, the motorr keeps going as if nothing happened. It takes full throttle to keep the heli a few inches off the ground. The main gear is good. I guess I will look over a few more things ans then assume it's the motor.



No wreck involved. One day it worked, and then it didn't.
It could be a few different things then,

1. Motor going out, (if you get 100 flights out of one your doing good).
2. Batteries going bad. (These small batteries only seem to last about 50 flights if you're lucky), some of the cheaper batteries only last 15 -20 flights.
3. Bad 3 in 1 board.
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Old Sep 18, 2012, 06:57 AM
You down with EPP?
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Houston, Tx
Joined May 2009
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Quote:
Originally Posted by Zeta30 View Post
It could be a few different things then,

1. Motor going out, (if you get 100 flights out of one your doing good).
2. Batteries going bad. (These small batteries only seem to last about 50 flights if you're lucky), some of the cheaper batteries only last 15 -20 flights.
3. Bad 3 in 1 board.
I bought 4 brand new Spyder 250mah batteries. So they are good.

I have 105 flights on thre heli, so it very well could be the motor. I just don't want to get a motor and find that it was something else.

I already did that with the batteries

If it is the 3 in 1 board, I wouldn't know. I think I will just try a new motor.

Thanks for the input guys.
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Old Sep 19, 2012, 05:42 PM
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United States, FL, Jacksonville
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Is there any difference between the MCPX V1 and MCPX V2 main board?
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Old Sep 19, 2012, 05:53 PM
Heli Mad
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Australia, VIC, Elsternwick
Joined Feb 2002
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Yes, there are improved settings on the V2 board, especially for the tail.
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Old Sep 19, 2012, 05:55 PM
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Lynden, WA
Joined Nov 2000
2,611 Posts
when mine lost power it was the main motor that was bad, and it didnt have very many flights on it, but it goes ok now with a new motor. They are so cheap try it!
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Old Sep 19, 2012, 06:52 PM
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United States, FL, Jacksonville
Joined Jun 2008
1,156 Posts
I burnt my tail fet when my tail wires shorted.

The symptom was smoke and the tail motor just kept on running.

I replaced the fet and now I have rudder in only one direction and not the other. The tail stops when I input left rudder, but right rudder accelerated the tail in the correct direction.

Is there a 2nd tail fet? If so, which one is it?

If not, any other thoughts?
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