Here wre some calculations on how I calculated hull speed ,power and fork and prop speed what do you think?

Boats, Jet Skis, Kayaks etc., including hovercrafts
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Sharpiecoot   1 µW

1 µW
Posts: 3
Joined: May 02 2021 12:11pm

Here wre some calculations on how I calculated hull speed ,power and fork and prop speed what do you think?

Post by Sharpiecoot » May 02 2021 9:04pm

https://youtu.be/FvGr-QJ6FGQ

If anyone's interested please take a look and tell me what you think using this little motor that runs at such a high RPM I'm thinking that I'm over with larger coils and slower speed would give me more of a mechanical advantage and allow the motor to not rev so high which contributes to the sound being loud and annoying.

Sharpiecoot   1 µW

1 µW
Posts: 3
Joined: May 02 2021 12:11pm

Inboard prop speed and pitch for 22 ft DIY inboard

Post by Sharpiecoot » May 02 2021 9:08pm

https://youtu.be/FvGr-QJ6FGQ

This will be my third year running the 1800 watt Chinese motor go-kart kit on my home build 22 ft sharpie sailboat. Though it works pretty good I'm wondering if a motor with larger diameter coils would allow me to have higher torque and run at a lower speed. I'm thinking This would improve the sound quality on the boat and hopefully improve efficiency through a mechanical leverage from the larger diameter. Currently I'm running late timing belt and a bit of a unique way of attaching the motor to the shaft.

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