Sound - wierd or normal

[firstknight]

There are times where the powerball gives out screeching/high pitch sound. Is that usual? I tried to record the sound but the sound aint comes out right.

Another sound would be some kind of rattling. I recorded it out. It doesnt sound like the powerball though, but what is important is the sound of the tak tak tak (very fastly done) and especially the last part you can hear the rattle... intermitantly and then lastly the ratatatatatatatatata...

Is this usual?

i upload the file to mediafire http://www.mediafire.com/?5dsz25txlcu

[Adrena1in]

Hi firstknight, that all sounds pretty normal to me. Nothing to worry about at least.

I've never really found out for sure what the plasticky scritchy noises are that you recorded as your Powerball slowed down. It could be the tiny plastic washers, which sit on either side of the rotor axle, because to me it does sound like a noise made by a tiny bit of plastic. It could be that the rotor support band had a tiny loose flake of plastic, which is rubbing as the support band revolves with the rotor. All I can say is I've heard it many times before and it's never been a problem, (and has always gone away).

The knock knock knock noise near the end, which is clearer and more obvious than the plasticky sound...this is just the rotor axles knocking on the inner track as the rotor settles down and stops revolving. Again, perfectly normal. (Just try not to loosen your grip and let it happen at high speed, as that can start to chip away at the inner track and cause tiny bumps, which over time can shorten the life of the Powerball. Just keep a tight grip all the time.)

Thanks,
Tim.

[The Force]

If the rotor support band holes are worn out too much, the rotor may touch the support band which causes a high pitch grinding sound when the powerball is at speed. Replacement of the support band (and don't forget the washers) will solve that sound.

The knocking sound is indeed caused by a bump or bumps in the inner track of the powerball on which the rotor axle hits every round trip (or twice per roundtrip to be scientifically correct ).

Regards,

The Force

[firstknight]

Adrena1in, according to The Force, is the screaching sound caused by the rim/support band in your opinion cause you didnt refer to it? If yes, is it a warrant a replacement as mentioned by The Force.

as to the bumps, i dont think it is as this is a new body? how could it have bumps...

[firstknight]

anyone else any idea?

[Adrena1in]

Sorry I didn't get back to you about this before...lost it amongst the other threads.

I personally think the screeching noise will go away by itself. I've seen new Powerballs making this noise, and it isn't a fault as far as I can tell, but if you want a replacement then please do just fill in the form.

I actually think the knocking you hear at the end of the audio file isn't dents on the inner track. These can occus if a Powerball is dropped, and you'll notice them in that the Powerball will knock, (you'll feel it too), while you're using it, and you've hear one knock for every rotation of your wrist. In the audio file the knocking noises sound to me like the rotor simply slowing down and settling into a short resonance, where it sort of jiggles back and a forth a few times. Again, I think this is quite normal.

[ronasor]

I think theres a problem either with the sphere or the support ring... there could be bumps that knocks the counter weight off balance and make the noise that comes almost at the end.. before the knocks.. you can send it for repairs if you think it effects your score.

Regards,

Ron