OK, I'm designing an Open Source Kite Ring Generator. See kitepowercoop.org for details. I have designed a system which uses a large inflated torus with kites attached radially around the axis on which it spins. I believe that removing the inside hub of a standard wind turbine by working in tension with kites... I can, with a large diameter torus efficiently add many blade tips (high ring solidity) without roots. I am quite convinced that I will get less turbulent airflow behind and easily as much power for less material than a standard turbine. I will be working at the top speed of ram air kites, which is less than tip speed of a solid blade. Therefore, for my ground based generator, I propose a large ring to house my generator wires. For ease of engineering I would prefer to work with a single large toroidal coil, Is there a configuration of rings of magnets, one either side of the coil ((North pole pointing out , South pole inward) or (North clockwise, south Anti clockwise) or (North upwind south downwind)or any alternating variation on the previous) running around the single coil which produces DC current? Why am I wrong? Why am I right?