Recent content by wmingin

Thanks Very Much! B.

Hello Wizards! Does permanent magnet alternator efficiency increase with RPM? Would an alternator with small magnets turning at high speed be more efficient than and alternator with large magnets turning at low speed. Frequency of output is not a concern, ( converting to dc ) Thanks for...

Thank you all! B.

Hello Wizards! O.K. I know that 1 horsepower is generated by moving 300 lbs 100 feet in one minute. The question I seem unable to answer is... How many horsepower is generated by moving 19 lbs 1-1/2 inches in 1 second? Help please ( my brain is exploding ) Best Regards, Bill

Hello Wizards! I'm trying to use a stepper motor as a wind powered generator. I connected some resistors to one coil of the motor, and turned the motor with a drill, while reading the voltages. The power ( watts ) number I came up with seems too high. Am I missing something...

Thank You very much! B.

Hello Wizards! I need to produce specially pure iron shapes for a research project. As you may know, pure iron is hard to find. Small pure iron bars are the easiest. Is it possible to melt and cast these small pure iron bars into other shapes, without the iron losing its...

Very Interesting! Thank You SredniVashtar

How stupid of me. I forgot that without oxygen, hydrogen won't burn. Sorry to waste your time. B.

Thank you Graniar. I enjoyed the link. By the way... I would like to know what keeps the hydrogen from igniting when metals are smelted in a hydrogen atmosphere. Anybody? Thanks! B.

Thank You for responding. With China restricting export of neodymium ore, I was wondering if recycling old magnets offered an opportunity. Could they be melted and recast? Regards, Bill

Can old neodymium magnets be crushed to a powder and re-sintered into new shapes?

Hello Experts! The V rails will be well supported (bolts at least every 6") deflection should not be much of an issue unless I make it one by forcing the cutter to take too much too fast (soft material, aluminum) and the cad driving software can be set to remove just a small amount of...

Hi Dickfore, The 550 nm value represents the wavelength of green light? B.

Hello All! Thanks for all the input. I guess I'll just fool around and see how close I can get. If y'all are interested, I post photos of my results.. ( success and/or failure ) Thanks again for all the suggestions... B.