Loud Feedback

[ausf]

If this is the sound you are refering to:




It's the motor and every motor there is that doesn't have functioning or adequate noise suppression. It doesn't matter as to the battery charge, unless the low battery is allowing lower motor movement. It's the housing vibrating, smaller motors have higher pitch. If you've ever been around those micro helis or planes, you'll here tht sound from the second the batteries are plugged in until it's turned off since the linear servo motors are too small to bother with suppression and they are constantly moving to find position.

You'll notice in the above video, it'sonly at extreme low input. That's an old Tamiya Tiger, it has nothing to do with brands.

[Pebs434]

Thank you again Alpha and ausf, that is exactly the noise and I fully understand now. That's another worry ticked off the list.
So pleased that I joined this group, the expertise is invaluable.
Have a great weekend.
Kind regards,
John.

[ALPHA]

Yup.........That's the sound ....on Heng Longs though...it is low battery that causes it

ALPHA