"Homemade 210kw motor that goes inside Ripperton's Electric Yamaha R1... 4x motors (4 stators), 2 motor shafts, all motors synchronised running like one big monster. 2x 600A controllers (1200A) running at 175v...."DIY Electric Car Forums ---> RIPPERTON Electric track bikeHomemade 210kw 2x 600A controllers (1200A) running at 175v