It should be understood that
electric boat range can be extended dramatically by driving at low speeds.
Example = my experimental e-boat with Perm 132 motor, tri slender hulls
, 450kg weight, battery set here only 3kWh.
1kn 200km
2kn 100km
4kn 55km
8kn 14km
15kn 5km
Of course, using a larger battery set, one could extend these figures
further.
Atkin prop channel hull may be good for low speeds, if transom stern
depth is kept small? No heavy loading in rear part.
thomashjohnsonjr wrote:
> The the web page of the commercially built ElectroBay 23 by Ray Electric Outboards, Inc. says this boat and electric motor has a range of 46 miles at a cruise speed of 5.8 miles per hour with 8 batteries and a range of 98 miles with a 16 batteries.
>
> The visual appearance of the ElectroBay 23 is quite similar to the Atkins tunnel-stern Everhope.
>
> My assumption is that on a calm day, with an average speed of 3.5 or 4 mph, the range would be somewhat further.
>
> - Tom
>
>
> --- In electricboats@
>
>> Thanks Victor.
>>
>> Some of the tunnel-sterns have mast & sail plans, but I'm not so interested in sail, nor am I interested in high cruising speeds. I had it with outboards 30 years ago, and turned to canoeing. For this electric boat endeavor I'd likely have a gas 2 or 3 horse stowed in a side locker, out of sight, in case of 'system failure'.
>>
>> 5 to 8 mph would be fine for regular cruising speed, especially if it raised the mpg or electric equivalent. There's no hurry.
>>
>> So, in addition to types of electric motors and re-charge systems, I'd like to hear about maximum range at 5 to 8 mph average speed.
>>
>> Thanks, again.
>>
>> Tom
>>
>>
>> --- In electricboats@
>>
>>>
>>> --- In electricboats@
>>>
>>>> Just joined 'electric boats'.
>>>>
>>>> Over the next year & 1/2 I plan to built an 20 to 25 foot Atkins tunnel-stern, most likely the Everhope or Shoal Runner plan. I lived Thomasville, Georgia and visited the late Robb White's workshop before starting on my first canoe, 2 hours with him was like a graduate how-to and how-not to full graduate level class.
>>>>
>>>> Subsequently, we moved away from T'ville, and I started off with an 18ft basswood stripper canoe. Over the past 25 years I've constructed 9 canoe or bateau type boats, the largest being 20+ feet. After construction, most have been used for ten or twelve day fishing/canoeing treks in Georgia/Florida/
>>>>
>>>> I also lived on the ICW at St. Simons for two years and talked to all sorts of folks traveling the ICW from New England or the Great Lakes to Florida & the Bahamas. The smallish size of some of the boats crossing 'big/deep' salt or fresh water surprised me.
>>>>
>>>> A shallow draft motor boat with 150 to 250+ mile range or further became a long-term construction goal.
>>>>
>>>> Construction for trip & use: a shallow draft Atkins hull using electric motor propulsion & a LARGE battery bank with a dual or triple re-charge system by: 1. generator, 2. plug-in, 3. perhaps solar.
>>>>
>>>> Components off-the-shelf: E-tek electric motor, Honda generator &, hopefully, solar.
>>>>
>>>> I've definitely decided to use an Atkins plan, due to the economic 'protected' prop and shallow draft of their tunnel-draft designs.
>>>>
>>>> But for propulsion, any & all suggestions about the dependability & size needed for electric motors, generators and solar will be appreciated. And, of course, where to find such.
>>>>
>>>> Thanks so much,
>>>>
>>>> Tom H. Johnson, Jr.
>>>> Pine Mountain, Georgia
>>>>
>>>>
>>> Hi Tom.
>>> For traveling a distance like that, you can forget electric drive. You should regard sail for the long distances,some sort of hybrid, or an outboard in addition to el.
>>>
>>> Victor
>>>
>>>
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