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

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

Current post: Re: Electric Hydrofoil/E-Foil

Postby Jezza » Thu May 25, 2017 7:37 am

I have started my build. The specs/ideas for it are as follows:

Board - Old windsurfer sliced and diced up to a better and more manageable size.

Foil Mast - Slingshot Hoverglide Mast: https://fcwatersports.co.uk/slingshot-h ... -35-4.html
Foil Fuselage - Custom made (wood/fibreglass combo)
Foil Wings - 3 or 4 sheets of 3.2mm ply laminated with epoxy and fibreglass

Battery - I plan on testing 8s -12s to see what i can get away with.
ESC - Swordfish Pro 300A (should give me a fair amount of headroom)
Motor - TFL SSS 56mm (exact spec not decided yet)
Gearbox - The options are either a torqeedo 14:1 or a Reisenauer Super Chief (this will depend on the prop/impeller size and motor)

Motor unit/housing
I still haven't decided exactly which route I am going to take here. The initial unit will be 3D printed in order to keep the costs to a minimum.
Jet-drive: To start I will go this route. I will use a 60mm-64mm impeller. This may make it possible to get away without a gearbox, simplifies the system and makes it cheaper. It will be less efficient, but to start with I don't mind.

Prop with Kort nozzle: Using a gearbox to lower the prop RPM will allow me to use a larger prop and thus make the drive more efficient! However this means that there are more parts to fail and also increases the cost of the build.

Way out approach: I recently saw a video of a 3D printed brushless motor. Therefore it would be possible to design a integrated motor/propeller unit and then custom wind it. This would be a really interesting approach, but I must admit that I may be a bit lazy for this.

My steps for the project will be as follows:
- Design and build the foil.
- Design, build and test the motor unit. I have a k1 kayak and surfboards I can test on to at least ensure it works and provides enough power and speed.
- Hack the windsurfer and attach the foil.
- Attach motor unit and then test to see what happens!
Edited by Jezza on Thu May 25, 2017 7:38 am.
Jezza
100 mW
100 mW
 
Posts: 35
Joined: Mon Apr 03, 2017 7:11 am

Original post: Re: Electric Hydrofoil/E-Foil

Postby Jezza » Thu May 25, 2017 7:37 am

I have started my build The specs/ideas for it are as follows:

Board - Old windsurfer sliced and diced up to a better and more manageable size.

Foil Mast - Slingshot Hoverglide Mast: https://fcwatersports.co.uk/slingshot-h ... -35-4.html
Foil Fuselage - Custom made (wood/fibreglass combo)
Foil Wings - 3 or 4 sheets of 3.2mm ply laminated with epoxy and fibreglass

Battery - I plan on testing 8s -12s to see what i can get away with.
ESC - Swordfish Pro 300A (should give me a fair amount of headroom)
Motor - TFL SSS 56mm (exact spec not decided yet)
Gearbox - The options are either a torqeedo 14:1 or a Reisenauer Super Chief (this will depend on the prop/impeller size and motor)

Motor unit/housing
I still haven't decided exactly which route I am going to take here. The initial unit will be 3D printed in order to keep the costs to a minimum.
Jet-drive: To start I will go this route. I will use a 60mm-64mm impeller. This may make it possible to get away without a gearbox, simplifies the system and makes it cheaper. It will be less efficient, but to start with I don't mind.

Prop with Kort nozzle: Using a gearbox to lower the prop RPM will allow me to use a larger prop and thus make the drive more efficient! However this means that there are more parts to fail and also increases the cost of the build.

Way out approach: I recently saw a video of a 3D printed brushless motor. Therefore it would be possible to design a integrated motor/propeller unit and then custom wind it. This would be a really interesting approach, but I must admit that I may be a bit lazy for this.

My steps for the project will be as follows:
- Design and build the foil.
- Design, build and test the motor unit. I have a k1 kayak and surfboards I can test on to at least ensure it works and provides enough power and speed.
- Hack the windsurfer and attach the foil.
- Attach motor unit and then test to see what happens!
Jezza
100 mW
100 mW
 
Posts: 35
Joined: Mon Apr 03, 2017 7:11 am

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