New blade mcpx v2 . blade issue? - RC Groups
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Jan 21, 2013, 04:56 PM
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New blade mcpx v2 . blade issue?

Good afternoon. I just purchased an mcpx v2. I have only had easy fly micros before. so i figured this would be a good place to start learning the other way.

I have an issue.. first battery charge in fact... first off, i cant get it off the ground, but that takes practice
but when i throttle up, just above where it lifts off it rattles the blades like you cant believe. its not air buffetting from what i can tell but it just vibrates and rattles so much so I wont run it. not sure what happened.. any advice?
ill try to take a video here.

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Jan 21, 2013, 05:15 PM
Cranky old fart
Balr14's Avatar
You have to make sure the blades are fairly tight and straight. Tight enough that it requires fair finger pressure to move them. No up and down slop at all.
Jan 21, 2013, 05:23 PM
Registered User
i did that . still no relief..
here is a video

IMG_1094 (0 min 16 sec)
Jan 21, 2013, 05:28 PM
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chulian1819's Avatar
balance the blades
Jan 21, 2013, 05:31 PM
Registered User
I am new to the single rotor game, so this doesnt come naturally thanks.. ill give that a try when i have some time. is there a certain way to do that or a site i should visit? never done anything like this. thanks
Jan 21, 2013, 05:47 PM
Registered User
First, balance the blades.

Second, tighten the blade grips. Tighten the blades so that when held on it's side the blades don't move on their own but will move if you give it a gentle shake.

Third, Remeber to straighten your blades out before spooling up. It's a bad habit to get into and can really damage larger helis.

Finally, get it in the air quickly but smoothly. Most FBL units do funny things when the heli if vibrating against the ground.
Jan 21, 2013, 08:14 PM
Registered User
so i dont have a balance thing for the blades, but i weighed them. they were both 2.3g.
i tightened them down, but didnt make a difference.
even replaced the blades, same thing.
no really sure where to turn now.. any ideas?
Jan 21, 2013, 09:59 PM
Registered User
Don't overtighten. This is the standard way.

How to Adjust Blade Tension (0 min 28 sec)

If the blades barely move when you do this, it's way too tight. Mine actually go down further than that.

Check the main gear if it's seated properly and that all the teeth are there. It should be lined up perfectly with the motor pinion and it should not move when you move the rotorhead up and down.
Jan 21, 2013, 11:16 PM
Registered User
Your blades don't need balancing.

Are the links to the head over the balls on the swash or have they been pushed too far and are over the pin connecting the balls to the grips?

The same goes for the links going to the balls on the swash.

Has your swash separated?

Are the balls on the grips and swash intact? I have seen them break so that they are flexible but not separate.

Is your anti-rotation pin in the correct place?
Jan 21, 2013, 11:29 PM
Registered User
so i think its the gear .
here are a couple of pictures.
this is in the down position (the pictures)
if i move blades up it is more centered.

so i accelerate and the big white gear moves up the smaller gold gear and when it gets up in the center of the gold gear thats when it goes all crazy with the noise and rattle.

man i wish i knew more about this stuff. i appreciate all your help, and the continued help

ps the gold gear is stationary, doesnt move.

Jan 21, 2013, 11:31 PM
Registered User
Is the gear fully pushed on?

Mcpx main gear fix (1 min 54 sec)
Last edited by Martyn McKinney; Jan 21, 2013 at 11:40 PM.
Jan 21, 2013, 11:42 PM
Registered User
martyn... thanks so much.. that was it... thats all it was...
appreciate all the suggestions and i thank you all
Jan 22, 2013, 01:14 AM
Registered User
Tight enough that it requires fair finger pressure to move them.

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