Getting Into Electric Power Catamarans

Boats, Jet Skis, Kayaks etc., including hovercrafts
calab   100 kW

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Re: Getting Into Electric Power Catamarans

Post by calab » Mar 24 2022 9:33pm

30lbs/kw seems like a lot but I have not googled it to compare.
A genie to the controller to power the motor, many ways to go about it.
There was a young kid doing that with his ebike, I wish I was doing cool shit like that as a teenager.

SlowCo   10 MW

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Re: Getting Into Electric Power Catamarans

Post by SlowCo » Mar 25 2022 4:32am

I suspect it would be more efficient to use a small 4 stroke outboard motor together or in turn with the electric one. Less losses with direct propulsion.

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bobkart   10 W

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Re: Getting Into Electric Power Catamarans

Post by bobkart » Mar 25 2022 11:48pm

Definitely. But I want propane as it's much cleaner than gasoline in terms of emissions.

LEHR used to make propane outboards, but went out of business years ago. At the moment I just see (in the USA) 5hp propane outboards (Mercury, Tohatsu). That's enough power to go about 10mph, but they don't come in remote-control models. Then there's Seatan (out of China) with a line of propane outboards topping out at 20hp.

Setting aside Seatan, I'd need to either convert a 5hp tiller model to remote control, or convert a (say) 20hp gasoline remote model to propane. Most modern gasoline outboards use fuel injection, and my understanding is that a carbureted engine is easier to convert to propane.

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bobkart   10 W

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Re: Getting Into Electric Power Catamarans

Post by bobkart » Mar 26 2022 12:22pm


Hillhater   100 GW

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Re: Getting Into Electric Power Catamarans

Post by Hillhater » Mar 28 2022 7:50pm

Propane fuel cell ??...$$$$s :shock:
This forum owes its existence to Justin of ebikes.ca

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bobkart   10 W

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Re: Getting Into Electric Power Catamarans

Post by bobkart » Mar 28 2022 7:58pm

Hillhater wrote:
Mar 28 2022 7:50pm
Propane fuel cell ??
Any that I've found so far are either tiny in terms of power or expensive (or both).

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bobkart   10 W

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Re: Getting Into Electric Power Catamarans

Post by bobkart » Apr 03 2022 2:07pm

Longest run yet on this motor:

https://www.youtube.com/watch?v=gKxEHpio7E4

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bobkart   10 W

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Re: Getting Into Electric Power Catamarans

Post by bobkart » Apr 09 2022 9:25pm

Longest run yet up the Sammamish River:

https://www.youtube.com/watch?v=ZLzW7iqZXoY

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bobkart   10 W

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Re: Getting Into Electric Power Catamarans

Post by bobkart » Apr 23 2022 8:59pm

I made a video of how I install the battery on the boat.

https://www.youtube.com/watch?v=fmk1_ynLdwI

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bobkart   10 W

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Re: Getting Into Electric Power Catamarans

Post by bobkart » May 05 2022 12:20am

Another recent cruise around Lake Washington, this time 16 miles in two hours.

https://www.youtube.com/watch?v=2RcZpSUF_-E

SlowCo   10 MW

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Re: Getting Into Electric Power Catamarans

Post by SlowCo » May 05 2022 7:32am

Really nice cruising.
Beautiful area and great that your electric drive works so well :thumb:

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bobkart   10 W

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Re: Getting Into Electric Power Catamarans

Post by bobkart » May 14 2022 8:56pm

She finally got her name applied.

Image

Image

Image

SlowCo   10 MW

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Re: Getting Into Electric Power Catamarans

Post by SlowCo » May 15 2022 8:15am

Ca(rmen)-tamaran Electra :thumb:

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bobkart   10 W

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Re: Getting Into Electric Power Catamarans

Post by bobkart » May 19 2022 7:55pm

Working on a second, smaller battery, for use as either backup battery (5.376kWh), or to add to the main battery for more range (156 minutes of full power). Could also be used by itself for short outings (~50 minutes of full power).
GOPR0426-half-crop.jpg
GOPR0426-half-crop.jpg (577.72 KiB) Viewed 743 times




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bobkart   10 W

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Re: Getting Into Electric Power Catamarans

Post by bobkart » Jul 11 2022 6:16pm






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