Alternator for Small Prototype (VAWT)

[mechamz]

Hi, I'm currently doing a VAWT prototype.

I'm happened to find these 2 alternators, but not sure which is better?

http://www.ginlong.com/wind-turbine-pmg-pma-permanent-magnet-generator-alternator-GL-PMG-500A.htm

http://www.windbluepower.com/DC_540_Low_Wind_Permanent_Magnet_Alternator_p/dc-540.htm

the dimension of the Savonius turbine, height is 0.8m and width is 0.43m

My system require a low starting torque and low friction alternator. Previously, I've purchased one from http://energistar.com, but the performance was far from the information given.

I hope the alternator able to generate 12V and more than 1 or 2Ampere at low rpm, and low torque required. Any better suggestion than these 2 alternators are welcomed.

or something like this, http://www.gotwind.org/diy/Axial_Flux_Alternator.htm

Any idea??

Already has this going in another thread. Should discuss it there.