512 - currently running a aluminum hard blade race fan, no flex fan here. Also fan is hard mount to the pulley, no clutch, saving every 1/8” of space possible. If I could get a 19” 7 blade fan that would be perfect but no one makes one that I can find. I can even find a 7 blade 18” fan, if you know where I can get one please lmk!
will check out the link you included thanks!
