Blue substance in motors

[Lonnie Gerken]

Anyone know what this blue stuff is inside three motors on my H? The other three motors have no trace of it. New motors have no trace of it.

 

[Grumpy]

Anyone know what this blue stuff is inside three motors on my H? The other three motors have no trace of it. New motors have no trace of it.

Could be some excess goop they use to balance the motor. Have you ran the motors and checked for vibration?

 

[PatR]

Looks like heat shrink tubing or a piece of shredded plastic.

 

[Lonnie Gerken]

Yes the motors run smoothly. it appears to be melted plastic. It is hard as a rock now. I have a couple new motors and they don't have any of it.

 

[Mrgs1]

Can it be removed with tweezers or craft knife carefully? May have a slight effect on the cooling properties of the motor.

 

[KEITH KUHN]

Can it be removed with tweezers or craft knife carefully? May have a slight effect on the cooling properties of the motor.

That was my first thought.
Try to remove with tweezers.

 

[Russell Smith]

Can it be removed with tweezers or craft knife carefully? May have a slight effect on the cooling properties of the motor.

That and eventually could affect balance.

 

[claudius62]

It's a blob!
It's a new variety, the Blue Blob, it eats everything in its path.
Take care at home.

 

[jannislh]

That looks like the epoxy resin they use to balance the motors. If you have a look at the lower or upper part of the magnets you will see a little bit of this substance on basically every motor. Unless the motor is perfectly balanced by conincidence, which is highly unlikely, you will need some of it in order to get rid of any vibrations.

In your case it looks very unusual. If it is actually this balancing compound, it seems like they have "repaired" a motor which would otherwise have been scrap.

I have no idea what else would get in the motor like this. If the motor gets warm enough to melt plastic, something is wrong.

 

[AH-1G]

In this case who cares, it's seems to be routing Yuneec having "lack of quality control".

 

[KEITH KUHN]

Was motor new or a
used one ?

 

[Lonnie Gerken]

Was motor new or a
used one ?

It is the motor that came on the H from the factory. 3 motors have that stuff and 3 don't.

 

[Lonnie Gerken]

There are around 30 flights on the motors.

 

[AH-1G]

If it works no big deal.

 

[KEITH KUHN]

S

It is the motor that came on the H from the factory. 3 motors have that stuff and 3 don't.

It is the motor that came on the H from the factory. 3 motors have that stuff and 3 don't.

Was it a factory refurbished Drone ?

 

[PatR]

Does that matter? All the motors were made for and provided by Yuneec.