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Motor Size

Hi,

I'm designing a model submarine, and need to know what size electric motor I will need in it.

It will be 4m long (12 foot) and will hopefully beable to pull me along with it.

If the weight of the sub and me on land is say, 45st with a bit added to be on the safe side. The sub has a 7 bladed 0.4m prop and is rougly 4m long, 0.5m wide.

So can anyone provide me with a rough idea as to the size of the motor I will need to power this beast?

Thanks

Michael

Michael
Nov 2
2005
building your own submarine.. awesome.

"Michael" <miQchaelQhQims@Qblueyonder.co.uk> wrote in message

Nov 3
Not sure yet, was planning on working that out when I have an idea about the motor

Thanks

Michael

Michael
Nov 3
I built an electric boat this summer about a quarter that size and it moved right along with two 6 watt motors. I would guess 100 watts would really hum along but battery life would suffer. Maybe 60 watts? How will you control it? gfretwell
Nov 2
   
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