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Square rotor disk on SRG



Original poster: "Paul Arrowsmith by way of Terry Fritz <twftesla-at-qwest-dot-net>" <p_t_arrowsmith-at-hotmail-dot-com>


Hi,
For now a piece of G10 is out of my price bracket for my small SRG project 
so I plan to use four 150mm x 150mm (6inch) blank PCB sheets sandwiched 
together. It's 1/4 of the cost.
My motor is running off 50Hz so it’s a 3,000 RPM modified for sync
My questions are: what type of glue should I use to laminate them together? 
Or should I just use my electrode bolts and motor shaft-mounting nut to hold 
it all together?
Is it feasible to run a square disk? Has anyone done this? If I don’t cut it 
down to a circle my electrodes can be spaced out in diameter by a further 
5cm (1.5 inches) which will be beneficial in my design. The disk will still 
be in balance but I don’t know if the extra drag from the increased wind 
resistance may be a problem? Is it structurally sound to have the electrode 
bolts mounted in the corners (rather than on a circular disk?

Thank you for any comments you my put forward.
Paul A. (Coiling in Australia)