Originally posted by Turion
shielding / holders, magnet holders MUST be used. I have spoken till
I am blue in the face
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I will hold back no punches. THANE HEINZ? Do you acknowledge his
work? Do you see his rotors? Do you read patents concerning power
generation for marine installations? We if you did like I am seeing
you would know that shielding / holders limit the magnetic field from
one pole overlapping the next pole.
Do I need to draw a picture of a rotor with magnets on it doing a
field visual of overlapping magnetism? Do I? You know me, I will.
I am discussing refinement and practical applications not proof of
concept. I want it to run so it does not tear itself to ribbons or burn
up with heat.
Magnets having shielding / holders are mounted with special press fit
rubberized epoxy formulas. The holder centralizes the magnet inside.
In other words my magnets on my bench for my project show that the
shielding/covers/holder keep the magnet from coming out, they are held
by the field itself. The magnet keeps itself to a degree.
Yes I have it on my bench and no I am not talking speculation. It might
help if your read my posts in your busy day. Anyway I am warned now
about giving advice.
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Another thing (MY OPINION) you run 3000rpm's using plastic rotors you
are going to be killed eventually or kill someone with a magnet. This is
not a game of who is better this is about common sense staying in
one piece.
Okay lets take it from the top.
#1 All commercially grown rotors use some form of a metallic substance
to ensure structural integrity for tolerance
#2 Magnets not only need holders to help retain their position but
the same is a magnetic shield limiting magnetic interference. Shields
push the field out front where the core is not permitting the field to
reach over several inches to the adjacent pole not intended to be
engaged.
I have stressed this before, common mechanical sense, probably way
over the heads of those not considering. Look at Thane Heinz rotors.
Reject my offering go ahead, to your own peril.
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Now does anyone what a suggestion how to hold magnets more tightly?
I guess not.
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Many other pictures of this rotor are on this site put here by one of
Thanes past machinists. These many pictures show shielding cylinders
around the magnets.
I have shields and I use metal rotor, I have them here on my bench.
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Yes they work just as well as plastic. I have plastic rotors on my bench.
So my experience is what i am speaking about. Personally I think you
have to be crazy to run a plastic rotor up to 3000rpm - 4000rpm
Insane.
Plastic cracks, plastic can not stand the pounding, plastic can not
take the vibration. Plastic is a joke and unsuitable for long term
practical use in high quality machines.
The shielding eliminates the problems where a metal rotor bleeds of flux.
No commercially available electric car motors use plastic rotors and
rightfully so. Electric motor engineering is not totally without merit.
Thank you for your time. You better listen to me.
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