ORIGINAL: gkamysz
I can see where a smaller lighter magneto system is desirable, but at the same time I don't see why a battery operated system is so undesirable.
Just one less thing to go wrong, that's all. If the lightweight mag can also be made cheaper than an EI kit, that would be a bonus. That remains to be seen, however.
I am sure I can make the aluminum plate work with the forces involved. Whether it will be too heavy or not is a different problem.
For magnets, here is an example of what is available (ignore the price, something is goofy there):
http://www.houseoftools.com/product.htm?pid=15555
They are available from 1/4" diameter up to 1" at least. The 1" ones are so powerful you can't pry them off a steel surface.
Mark