12 5 8 x 2 July 8, 2019 16 32 64 128 12 5 8 x 21 k 12 5 8 x 21 propeller 12 5 8 x 21 12 5 x 8 25 Yamaha 12 5 8 x 21 12 3 8 x 2 5 7 4 15 5 12 x 8 25 12 24 x 5 8 12 x 2 5 1 8 5 x 8 )- 4 5x 2 )= 12 7 8 x 5 12 5 24 Yamaha propeller 12 5 8 x 21k 15 x 12 5 8 x 24 Yamaha propeller 12 5 8 x 21 12 5 8x 27