Graupner Jet Unit 5 on Hirobo boat, mechanic test

Hirobo STR23ccr Cabin Cruiser
Motor: leopard 5692, 730KV, Shaft Diameter 6 mm.
Speed controller: hobbywing 160A
Battery: 6S1P 5000mAh
Graupner: Jet Propulsion Unit 5 (2347) Shaft Diameter 7mm,49mm. Impeller