I’ve seen a few posts on the 100KV vs 120KV topic, but I’m still not sure what the correct answer is, and maybe things have changed with newer setups in 2026.
I’m ~170 lbs and looking to build my first DIY eFoil.
My current plan is:
- Motor: Flipsky 65161, deciding between 100KV and 120KV
- Battery: Most likely 14S
- ESC: Flipsky 75200 water-cooled
- Rider weight: ~170 lbs
- Prop: I’d like to experiment with different props, potentially including 3D-printed props
- Shaft: Leaning toward the 12 mm threaded/round shaft for more prop options
- Target speed: Not sure yet. I’m more interested in a good balance of easy takeoff, efficiency, and reasonable top speed rather than chasing maximum speed.
From what I’ve read, the arguments seem to be:
- 100KV: More torque per amp and potentially better suited to larger props.
- 120KV: The 65161 should have plenty of torque anyway, and the higher KV gives more RPM/headroom, especially on 14S.
Can any users help me decide on which version of the motor to get? Any info would help!