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Electric Boat
"This is a first prototype and I found an old Johnson 10 horsepower motor for a donor lower unit I pulled off the power head and installed the Etek motor. Here's the completed unit. A 1/2 inch aluminum adapter plate was fabricated to accept the top of the lower unit. Another 1/2 inch plate was made to fit the mount flange of the motor and a special coupling was machined to adapt the output shaft of the motor to the drive shaft of the lower unit. A lot of the former underwater exhaust was sawed off and the exposed areas was filled with epoxy putty. The rear portion of the cavitation plate has been removed and a prop off of an 18 horse motor has been fitted."

"For initial testing the
motor is being run on 12 volts. A swing arm is attached to the test tank
and a spring scale is attached to the end of the swing arm. As different
power configurations are tried and different props are tried, readings
will be taken to try and arrive at an optimum combination."

"The initial test runs on a boat look promising.
For this first test, I scrounged up three 12 volt batteries of unknown
quality connected them in series for 36 volts and used a solenoid to
connect to the motor. The start up torque was incredible. You really have to be
hanging on to the tiller when contact is made. In the pictures above, my
Diablo is being used as the test bed. It's fifteen feet long and has a
five foot beam. The hull weighs 245 pounds and as tested with batteries and
driver the weight was probably about 650 pounds. An upstream and downstream
pass was made while recording speed with a GPS. The 2 way average was 5.7
mph.  Just a little bit more and it might have gone on plane."

|Electric Motorcycle Kit| |The Kit| |Electric Motorcycles| |Electric Scooter| |Electric Boats| |Electric Tractors| |Electric Mowers| |Electric ATVs| |Electric Snowmobile| |Why Electric? Save $ +...| |Batteries| |Technical Design | |Dealer Wholesale| |Solar Green| |Available Vehicles| |Order Page| |Order Parts| |"How to" Book|