Balancing a spinning object ???

[ksor]

Yesterday I tried some preliminairy testings for my yarn ball winder - would it work at all, and it did I think BUT...

It would be nice IF it could be running much faster but there are some UNBALANCING in the system
(just like our economical system has some unbalancing )

so it's nearly jumping of the table ... how do I do the balancing ?

Look how the ball winder looks like here:

http://kelds.weebly.com/garnvaeligrktoslashj.html

Is it in fact so simple that just putting it to spin VERTICALY you should be able to put the rotor in every position and it should be STAYING there - is there a method to find out WHERE and HOW MUCH "weight" to add or remove to get it balanced.

 

[Tom Griffin]

You can do a simple static balance on the assembly by laying it on horizontal knife edges. Are you sure it's not the yarn making it out of balance?

Tom

 

[ksor]

You can do a simple static balance on the assembly by laying it on horizontal knife edges. Are you sure it's not the yarn making it out of balance?

Tom

That's unlikely because the yarn ball itself has a minor weight compared to the winder itself - if that's what you mean.

 

[DMS]

You may simply need to add a counter balance to the side opposite that white piece (spindle?). I'm making the assumption that the vibration is the X-Y plane, rather than the Z plane. Like Tom says, lay it on it's side in a set of bearings, and add weight to the opposite side until the thing will stay in any position you put it in without wanting to turn. Run it again after that, I think it will help your vibration problem greatly.