Wheel balancing questions?

[rockstar195]

1) If the inner tube is filled with slime, doesn't balancing not matter anymore?

2) How do you balance a wheel with a hub on it? It's not going to move around freely because of the magnets. I did find a thread where someone said the only way is to run the wheel at low speed and watch it. Or to film it (make a video) and look for the heavy spot. In addition, I read that another way to balance it was by trial and error, where the person moves the weight around attached to the wheel until you find the spot opposite of the heavy side?

The rim/wheel combo I am using is a 19" x 1.85" moto wheel with a 80/100-19 tire. Thanks

 

[motomech]

At the speeds most ebikes go, balancing is not needed.
What is needed, is for the wheel to be true (round) and that's the challenge.

 

[flat tire]

What the previous guy said, and also, balancing wheels is a really well understood thing and you will doubtless get a much better guidance on how to accomplish that via GOOGLE than trusting the members here who mostly have never balanced a wheel.

 

[rockstar195]

What the previous guy said, and also, balancing wheels is a really well understood thing and you will doubtless get a much better guidance on how to accomplish that via GOOGLE than trusting the members here who mostly have never balanced a wheel.

I understand that, but as my post questioned: if the inner tube is filled with slime, how will balancing be accomplished? And as far as the wheel with the hub, how can I perform a static balance?

 

[flat tire]

If you have slime it may kind of dynamically balance, but never be right.

To statically balance your assembly is done the same way as literally anything else that rotates. Please, do some BASIC research on your own.

 

[rockstar195]

Post some tips if you have any. I already combed thru threads and googled this.

 

[fechter]

Personal attacks are against the rules here. Stop it or you could be banned. If you actually read and understood the first post, you would realize the standard method of statically balancing a wheel won't work with a hub motor because of the magnet cogging.

Taking apart the motor to remove the stator would be a total PITA and not practical. There is probably a way to dynamically balance a hub motor wheel, similar to the way they do motorcycle wheels, but it would not be a DIY setup.

You could lift the wheel and spin it at full speed and see how bad it is. If the wheel is carefully trued, the balance will probably be close enough. In theory, slime or any liquid stuff inside will tend to be self-balancing to some extent.