I have a 6 volt car fan motor with a 1/4" shaft and 3" diameter, that goes clockwise. Do I need a right hand prop or a left hand prop? I'am building a 8" wide by 24" long boat. Thanks Dan

Clockwise=RH rotation

-pkh-
Thanks
Dan

What kind of speed controller and battery set-up are you going to use with that motor ??


David

Boat like this

Battery http://www.batteries.com/productprof...p?appid=265086


prop http://www3.omnimodels.com/cgi-bin/w...I=DUMB2075&P=0

What kind/type speed control are you going to use with this set-up ?


David

Need some help with that. Might try this one http://www.rcmart.com/catalog/produc...e54a89f6646897

15A isn't much of a current limit, especially for that price. Dinball/RCmart is in Hong Kong, so shipping is usually about double what Tower or Horizon typically charges. For the same price (with shipping) , you could probably get this ProBoat ESC from Horizon...

http://www.horizonhobby.com/Products...ProdID=PRB2314

That looks like a huge amount of weight for a 24" boat.

Can I skin with balsa wood? or is this to weak for a boat like this? Not looking for any fast running with this wt. I have a foam mold made now Total wt. of Battery,motor,servos and RX 6LBS plus 4LBS for just the boat. I will test it with about 10LBS of wt. to see how it floats.

Hi Dan,

What fan was this motor driving originally?

The fan motors I mean turn the large fan in front of the radiator, this one looks more like it was used to power the blower inside the car's heating system.

BUT, I was under the impression you were going to build a larger hull?

Like Piperchuck already said, this combo, motor, battery, etc seems awfully heavy for only 24".

I'd go for a 700'isch motor on 8 -12 cells to keep the boat light. (even a 600 size motor might work, if you keep the boat light enough, it will work beautifully when the 600 motor is geared down with a belt drive, allowing for a bigger prop, which is more efficient)

For a 700/600 motor you'll need a bigger ESC, specially if you want to 'cruise'and not go flat out all the time, the ESC must be able to handle the partial load situations.

Regards, Jan.

Please show us a picture of the foam hull.

There are several ways to go about this:

- cover the hull with glasscloth and epoxy, once it's smooth, plank the hull with mahogany veneer (or whatever wood you like) and sela it with another coat of glasscloth and epoxy,
This way you will have made a sandwich that is very light and strong and should run with a light motor/battery set-up.
Most of the foam can be removed, just leave enough for boyancy in case disaster strikes.

- only use glasscloth and epoxy to cover the foam until you've build up sufficient thickness, paint the hull and finish with a nice wooden deck, etc.

Regards, Jan.

The fan motor is a 6 volt Heater motor out of a VW, brand new never used. Bought at a swap meet for $5. Boat will be 29 1/2"x 9 1/2" . This is the very early stages of building process . Trying to get some good ideas on all kinds of setups.

I thought as much...

29 1/2", lightly build, still is material for a geared down 600 or a direct drive 700 motor.

Regards, Jan.

When you set up a boat like this, is the center of gravity at 30%?
I use to run airboats at 30% COG