Hilden-Brand Magnet Motor

[Nali2001]

Hello Jack,
Are you saying that you run your motors on contact points, with no ?on the fly? ability to advance or retard the pulsing while running?! Then it is obvious why you can get to higher speeds. Since the pulse timing needs to be MUCH different (earlier) when you are running on 1500rpm, compared to say 300rmp. You need some opto switch timing with the ability to advance or retard the pulse timing while running, with integrated back emf recovery and maybe even use adjustable pulse length. I?ll see what I can do about your circuit question.

Material slowness and back emf will indeed play a role in not being able to go into higher rmps, but if it is true that you are running on un-adaptable contact point that to me seem to be one of the main problems which prevent good speed on the larger machines you have.

Regards,
Steven

[Nali2001]

Here you have a fast circuit with integrated back emf recovery to source battery. And pulse width modulation.
Be sure to use fast components. And be in the 9 > 36v range and under 100amp pulsing.
You can use opto sensors or hall effects like: http://www.dse.com.au/cgi-bin/dse.storefront/464e4d1d05ff63962740c0a87f9c06cf/Product/View/Z2620

Regards,
Steven

[JackH]

Later,,,,,,,JackH

[JackH]

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Later,,,,,,JackH

[Nali2001]

Hi Jack I did not mean an attack on you 'low' rpm, but I was just referencing from some Ecklin type variable reluctance motor/generators I tested some time ago. At first I had not changeable timing, and then switched to adjustable and got to higher rpm and so also 'better efficiency' since a lot of pulse power (potential) was wasted due to pulsing too late. It allowed me to optimize the 'puling moment' and so gain efficiency, and in my case a higher rpm was a byproduct.

Regards,
Steven