Search found 64 matches

by electric tug
Thu Feb 11, 2010 3:28 pm
Forum: Metal
Topic: Union Jack Accomodations on a Extended Fred Murphy?
Replies: 4
Views: 3379

Re: Union Jack Accomodations on a Extended Fred Murphy?

hi there- i bought plans for a fred murphy. my reasoning for the fred murphy over the union jack(which btw i owned plans for some time back) is the seaworthiness of the hull for one reason. The second was the power to weight ratio of the motor to hull which is also economical. the third and not leas...
by electric tug
Thu Feb 11, 2010 10:32 am
Forum: Electric Power
Topic: diesel hp VS electric hp
Replies: 20
Views: 45038

Re: diesel hp VS electric hp

i have to agree with whoever said that the shaft hp might be the same as the rated hp on an elecric motor. I have done some research on this and because the torque is generally higher on a electric engine, this translated into more work and thus more efficency and therefore more hp. so the math of 2...
by electric tug
Thu Feb 11, 2010 10:12 am
Forum: Electric Power
Topic: Fred Murphy Diesel Electric power????
Replies: 1
Views: 3056

Fred Murphy Diesel Electric power????

Hi this is my first post- i just bought the fred murphy plans and i want to investigate inexpensive diesel electric propulsion later ill build a large houseboat/barge to be pushed by the Fred Murphy. so here is what i wondered- I was thinking of using two high torque 10 hp golf cart motors making it...
by electric tug
Thu Feb 11, 2010 10:05 am
Forum: Electric Power
Topic: Fred Murphy Diesel Electric power????
Replies: 3
Views: 5291

Fred Murphy Diesel Electric power????

Hi this is my first post- i just bought the fred murphy plans and i want to investigate inexpensive diesel electric propulsion later ill build a large houseboat/barge to be pushed by the Fred Murphy. so here is what i wondered- I was thinking of using two high torque 10 hp golf cart motors making it...

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