Electric Motor on a Classic Runabout Boat - Elco EP-20

#elco #elcomotor #quietelectricmotor
This classic runabout boat was recently restored by Halls Marina- powered by an Elco EP-20 electric outboard with lithium-ion batteries at 148AH.
EP-20 Electric Outboard - www.elcomotoryachts.com/produ...
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[@abbaby555]

Absolutely beautiful!
This classic is amazing with that elco outboard
Just a great retrofit on a classic boat, they pair well 👍👍

[@officialWWM]

Now that’s cool!

[@bschindler2517]

Can’t wait until a 150 HP outboard is available!!

[@americanrambler4972]

They now have an EP 30 and EP 50 outboard, equivalent 30 and 50 hp. And this boat was rated for a total of 50 or 60 hp from the builder new. So with a 50, you might see around 30 to 35 mph. A 30 might give you 22 to 27 mph. About the same as a gas outboard. With batteries, a littler heavier and would have about a 12 to 30 mph range at full throttle double that at half throttle. The Elco motors are not configured for high speed. They have a fairly low RPM speed. They are not Tesla style go fast motors.

[@bschindler2517]

@@americanrambler4972 was hoping to be able to pull skiers with a pontoon......someday

[@americanrambler4972]

@@bschindler2517 someday you will. But not today.

[@jonnyspeed]

20hp should plane that boat. What's the problem?

[@mistersandy]

Very cool, but seemed underpowered. Should be a 40

[@americanrambler4972]

I have a ‘69 Silverline Shark, a 14 foot runabout with a 33 hp Evinrude ski Twin on it. (Actual length is 13’6”.) I keep thinking about and looking at converting to electric power, but I still want to run in the mid 20’s with it. So I need probably 40 to 50 continuous hp outboard power. I keep hoping Elco will come up with something suitable, but their 50 hp outboard is still way to heavy, expensive and not suited for that application. This boat with the outboard conversion configuration does not yet have the speed, power nor endurance to truly get “on top” and plane the way it was designed to run originally. I am not sure if it just lacks the power, or if it’s just too RPM limited with the motor and not able to spin the propeller fast enough to generate the necessary speed to get the boat to fully lift out of the water and plane. It appears to be in the semi plaining mode, which is highly inefficient energy wise for this hull.

[@ctibpo991]

The input wattage for this "20" is 8.4KW (175 amps x 48 volts) according to their web site. 1hp is equal to 0.746KW. So 8.4KW is equal to about 11hp of input juice, the net power is less (wire loss, pump, shaft and gears). 175 amps needs fat copper wiring or it will heat up reducing efficiency.

[@americanrambler4972]

@@ctibpo991 when I looked at the specs for these motors, they do produce rated hp at peak performance, but their continuous hp ratting is considerably less. Your 11 hp statement seems about right for what I saw for this motor. 11 hp is not much to push this boat up and over the hp hump to get on plain.