Francois St-Germain wrote:

I think that both sections of the shaft are

separatly

balanced by the outside counterweight I will try

to

balance it by the same way from the rear and

front.

I don't know if it will work but I have a good

feeling

about it!
I do have the angle sensor I will try with your

design

Thanks a lot!
Frank

At least one of the balance weights needs to be
repositioned.
Both must be exactly opposite the rotor. If you set
the e-shaft
up some how on perfectly horizontal knife edges so
it is free to
rotate you can then statically balance the assembly
(e-shaft, rotor
& balance weights) out side of the rotor and end
housings.

Paul Lamar

Francois St-Germain wrote:

I will make a static  and  a dynamic balance.
First I will let the shaft turn to it heaviest
point(on knife edges,like you said),turn it 90
degree,weigh it and calculate the momentum.
After I will just have to add or remove metal on one
of the balance weight to reach the exact calculated
momentum.For a fine tuning I'll make turn by someone
who is equiped for that kind of work
Thanks
Frank

Yes! Dynamic balance. I forgot to mention the couple.
Here is a diagram on the subject.

Paul Lamar

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