Re: Warren's daisy chain motors - Re: AW: Re: Aw: Re: [EVGRAY] Most lightning active point on planet

Body

OleThey are not fancy inside, well enough made, but quite ordinary, as permanent magnet motors.
The shafts are all 5/8", though some have been machined down outside the bearing to 1/2".There were some four brush types, but most were 2 brush. The only slightly high tech aspect is that they are early type prmanent magnet motors, as opposed to field coil magnet types.The magnets are cresent shaped ferrite type, and the commutators are copper, with carbon brushes.Each one weighs at least 3 kilos, or more.I hope this is some help to you.I can't get to my motors until I can start unpacking next week. The house things will happen first.Cheers Warren
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  On Fri, Dec 15, 2017 at 2:22 PM, [email protected] [EVGRAY]<[email protected]> wrote:       
Hi Warren,

Do you know what kind of motor you used like have you opened one? Are they ironless rotor kinds? Are they high efficiency types like the ironless rotor types etc? I guess they're expensive professional motors right? If there's a brand name and a type number we could look them up in a datasheet to see what kind of motors they are.

Regards
Ole



---In [email protected], <schoonersolsticemoon@...> wrote :

DougThe motors I have been using are extremely simple except for the optical readers which I removed as surplus to my needs, when using them as generators.I have never seen any funny stuff inside any of them when I have pulled them apart. I have always been impressed with how rugged they are built, capable of a lot of abuse at my hands.Cheers Warren

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On Fri, Dec 15, 2017 at 11:05 AM, konehead@... [EVGRAY]<[email protected]> wrote: 


Hi Ole

I think the most important feature of DC motors, if they will work or not, with Warren's daisy chain FWBR experiment,

is if the DC motors have any sort of  suppresion of the spark-flash at the brushes, such as some DC motors will have a diode that simply shoots the spike right back into the windings, some DC motors will have the placement of the brush-spacing to be just right so that the spike does not manifest at cetain rpms , some DC motors might have a magnet near the brushes to suppress the spike flash.....I would think you would want DC motors with no form of spark flash suppression for this experiment to work as it did for Warren.

ciaoKone



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