Hi there can I please get some help on my board (2 years later I’ve finally reached breaking point on this project)
100mm jet drive unit
100kv (15kw) motor with 84v battery (8400rpm no load speed)
400a speed controller.
It’s running fine all the mechanics are working/staying cool, but it just doesn’t have enough power to get on plane/surf/ride.
Do people recommend gearing to get more rpm. I’m guessing with load the rpm is dropping 1/3 (5000-5500rpm true rpm under load)
Also haven’t experienced cavitation so rpms not the issue.
All suggestions welcomed!