Viewing post history: Re: Electric Hydrofoil/E-Foil

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This page shows all versions of the post, starting with the most current version.

Current post: Re: Electric Hydrofoil/E-Foil

Postby Bazaki » Sun May 28, 2017 5:37 pm

Performance:
Max Power: 9.8 kW (205 A @ 46.7 V)
Max Speed: ca. 44 km/h (probably higher as max throttle was never applied for a longer time than 2s)
Max RPM (prop) : 6800 rpm
Planning speed: ca. 20-25 km/h
Power @ planning speed: ca. 3.2 kW


Quote from Jezza, 6800 rpm prop speed? That is very high i think, torqeedo is using 1300 rpm and i believe that 2500 rpm is most efficiënt for most outboard props.

1300 rpm at 5hp is 27nm of torque, the gearbox can handle 7,5nm and is also 75% efficiënt. So 25% in waist.
Edited by Bazaki on Sun May 28, 2017 5:53 pm.
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Bazaki
10 kW
10 kW
 
Posts: 686
Joined: Fri Dec 25, 2009 6:29 pm

Original post: Re: Electric Hydrofoil/E-Foil

Postby Bazaki » Sun May 28, 2017 5:37 pm

Performance:
Max Power: 9.8 kW (205 A @ 46.7 V)
Max Speed: ca. 44 km/h (probably higher as max throttle was never applied for a longer time than 2s)
Max RPM (prop) : 6800 rpm
Planning speed: ca. 20-25 km/h
Power @ planning speed: ca. 3.2 kW


Quote from Jezza, 6800 rpm prop speed? That is very high i think, torqeedo is using 1300 rpm and i believe that 2500 rpm is most efficiënt for most outboard props.
User avatar
Bazaki
10 kW
10 kW
 
Posts: 686
Joined: Fri Dec 25, 2009 6:29 pm

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