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Author Topic: Which motor and esc  (Read 1573 times)

CF-FZG

  • Guest
Which motor and esc
« on: May 12, 2011, 09:50:11 pm »

Hi,

I have the plans for a 36" speed boat and it calls for a Speed 700, (yeah right - which one %).

It's designed to run on 2 x 6cell packs, (I assume in series), but after looking at various sites for the Speed 700 series, I'm none the wiser as to which one I need. 
To summarise from the instructions;
Quote
With 12 good cells and speed-700 motor, an Octura X440 propeller should be a good place to start

Any suggestions welcome, and also which esc to suit, prefer one with reverse :-))

One other point - water cooling - woulkd it be required on this set up??

As you can tell, I'm new to boats, with aircraft there's several motor-calcs to guide you pretty close to what you need.


Mark.
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gwa84

  • Guest
Re: Which motor and esc
« Reply #1 on: May 13, 2011, 05:04:20 pm »

for motors i would go with  groupner speed 700 race or turbo  :-))

http://homepage.ntlworld.com/edward.matthews/ddmbc_files/motors/graupner.htm

and a speed controller to cope with 12 volts nad haw ever menny amps the motor needs
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CF-FZG

  • Guest
Re: Which motor and esc
« Reply #2 on: May 17, 2011, 07:56:08 pm »

Hmm, looks like the 700 Turbo then as the 700 Race is only rated up to 8 cells.

That's the motor sorted then :-))

So what size esc to go for??  it must be able to handle 12 cells, (14.4v nominal), I know what the stall current of this motor is but it seems excessive to get an esc of that size, or is it??


Mark
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gwa84

  • Guest
Re: Which motor and esc
« Reply #3 on: May 18, 2011, 01:46:04 am »

i would go with 20amp plus  :-)) try action electronics good gear and very good service
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