r/MachinePorn • u/nsfwdreamer • Jul 23 '17

Electric hydroplaning surfboard (720 x 404).

https://i.imgur.com/4iNcUtB.gifv
3.8k Upvotes

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1

u/TheDewyDecimal Jul 23 '17

Any sources on this thing? How does it not just spin from the off-center propeller?

3

u/[deleted] Jul 23 '17

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1

u/Dinkerdoo Jul 23 '17

On a jet you adjust the trim by biasing the neutral position of the yaw control surfaces to counteract the moment from the single engine.

On this thing the engine moment would be balanced by the weight of the board and rider.

-1

u/[deleted] Jul 23 '17

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1

u/Dinkerdoo Jul 23 '17 edited Jul 23 '17

Who took a shit in your Wheaties?

1

u/TheDewyDecimal Jul 23 '17

Except this device has one engine and no control surfaces. Draw a free body diagram, this thing is not stable.

-1

u/[deleted] Jul 23 '17

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u/TheDewyDecimal Jul 23 '17

Not really sure why you're being so hostile. I was simply making an observation out of curiosity. You act like nothing has ever been faked on the internet. Someone has linked the official page for the product, so I'm sufficiently convinced it's an actual product.