Gentlemen,
Thanks for your input. It's not as encouraging as I had hoped, but then why ask if you can't take it? I really cant afford a watt meter. The one I priced was 59.00.
I'll have to rely on touch, sight and sound. After running an hour, the motor housing was cool to the touch, I saw no great wobble in the blades [the mags are well centered near the ends of the blades], and I heared no whinning or labouring of the motor and I didn't smell anything burning. For my projects and abilities, that in itself is success BUT, the copper tubes were not very hot to the touch, so I'm not about to shut down my wood stove!
Do I understand right that my fan is useing more electric because of the added weight of the magnets? Because of the non magnetic copper and brass, and because the mags are well away from the houseing I'm sure there is no cogging.
If I tried smaller but more powerfull neo's, drilled many 3/4 inch holes in the blades to lighten them and increase the size of copper tube, any hope or just beating a dead horse?
arno