Hi there can I please get some help on my board (2 years later I’ve finally reached breaking point on this project)
Description:
Homemade board/shaped
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!
Cheers