08-10-2007, 05:46 AM
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Energetic Science Practitioner
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Join Date: Feb 2007
Posts: 1,735
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Congrats Shamus!
Hey Shamus 
Congrats on getting your BSG running!
I can testify, the magnets can do damage. I had one fly off my wheel and imbed itself in some drywall.  After that, since I am using a bicycle wheel, I taped them each individually around the rim.
One relatively inexpensive tool that I use to measure the performance is a digital tachometer similar to the one found at this link:
NON CONTACT DIGITAL LASER PHOTO TACHOMETER - NEW - (item 220136890075 end time Aug-10-07 12:24:04 PDT)
Regarding your voltage, that is more expensive to measure, an oscilloscope can show you the voltage and the wave form.
I found the best on my current set-up is putting out about 180 volts (input is 12 volts).
Have fun!
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