Electric Jet Ski

[Quinc]

I have always wondered why there wasn't more development with this. It seems like you could have a large brushless can motor with the center shaft threaded to accept a normal billet coupler. Bed plates on the electric motor could allow you to mount directly to Superjet motor mounts. Put a large battery where the fuel tank goes, and a huge brushless motor where your 701 sits. Even keep the cooling lines from the pump to cool the electric motor. It seems totally possible to make a drop in electric swap for any Superjet style hull. You could seal the engine bay completely and have sealed electronics. If you have seen any modern RC cars, they are wicked fast! Maybe some scaled up technology from that would work... I think the waterproofing and quality of electronics would be the major hurdle, Plus not catching yourself on fire with some won-ton battery

Problem is ride time. Even with r/c you only get 15-20 minutes out of them. and r/c has a much better power/weight ratio.

 

[fx1mark]

 

[mikesx]

Back on topic. The freeform boat had a chain drive between the engine and driveline. Had to lose some energy and efficiency like that. What Quinc has been up to with the motor direct drive to the pump is rad. 100% torque at 0 rpm will be awesome someday. Seems like a big round motor would have the output shaft in the middle which could be a hurdle? I’m so interested in this but haven’t really worked with electric motors.

I have always wondered why there wasn't more development with this. It seems like you could have a large brushless can motor with the center shaft threaded to accept a normal billet coupler. Bed plates on the electric motor could allow you to mount directly to Superjet motor mounts. Put a large battery where the fuel tank goes, and a huge brushless motor where your 701 sits. Even keep the cooling lines from the pump to cool the electric motor. It seems totally possible to make a drop in electric swap for any Superjet style hull. You could seal the engine bay completely and have sealed electronics. If you have seen any modern RC cars, they are wicked fast! Maybe some scaled up technology from that would work... I think the waterproofing and quality of electronics would be the major hurdle, Plus not catching yourself on fire with some won-ton battery

Forget chains, driveshafts and couplers, think bow thruster. Motor right in the hub, one isolated stator vein for a positive connection.