T-Pain Is On A Boat: Re: [Electric Boats] 220 ac to 180 dc controller to 3 hp Leeson sea trial

Wednesday, April 10, 2013

Re: [Electric Boats] 220 ac to 180 dc controller to 3 hp Leeson sea trial

I have tried something similiar.
controller 110V A/C to 90 Volt DC - 3 amp motor.
Tried driving it with a few different non sinewave inverters and only able to get about 400 watts output at the A/C.
If connected to hydro grid, I am able to pull a full 10 amps which is when the breaker trips.

at 400 watts A/C, not sure what it is at the DC motor(after the controller), my 16ft trihull speedboat cruises at about 1-2 mph.
My kids say they can paddle a canoe faster.
It is nice and quiet.
I wouldn't trust it in rough water or a big wind though.
Purchasing a sinewave controller at 1500watts is over my budget for this boat.

I just picked up a 48 Volt DC motor controller and will try it out soon.

I also have a golf cart motor similiar to the one you mentioned.
It is 36 volt.
If I can't get enough speed out of my other motor, I will try the golf cart motor.
The golf cart motor is alot heavier and probably more power than I need.

Mark

From: Orest Iwaszko <orestyko@hotmail.com>
To: electricboats@yahoogroups.com
Sent: Tuesday, April 9, 2013 9:53:15 PM
Subject: Re: [Electric Boats] 220 ac to 180 dc controller to 3 hp Leeson sea trial

Onward to fine tuning , Im thinkin it would be good to know the shaft speed achieved at my very comfortable 2.2-2.5 mph at 60% throttle right now to 100% throttle where wire and circuit board heat up quickly . To that end Ive found a shaft tackometer which I will try out tomorrow.

Looking forward to the tackometer results with my 9 inch pulley on the shaft . I need to see how close to the full 1650 rpms the 3 hp Leeson is achieving . There is room for a 16 inch pulley.

There is also a thought my controller might be upgraded ? Possibly a combination . The thing is im soooooo close . Really could just use it the way it is ..... except for the windy days and strong tides. Just a touch more .......

Thanks guys for the encouragement and assessments towards fine tuning.. HIgh fives all around. This group rocks.

On 2013-04-05, at 9:36 AM, Orest Iwaszko wrote:

Black magic does work. My 34 foot 9 ton CHB sea trial results . The electric motor turns my shaft with a 5/8 belt . Pulley on the motor is 2.5 inch and on the shaft is 9 inch . Power : 240 volts comes from my generator.

Fishing speed can go all day ( 45 % throttle puts me at fishing speed ) .

   Just shy of 4mph at full tilt .   At full throttle the controller heated up after 15 min to plastic smelling levels.

So I back off and be happy , also thinking of going 6:1 ish instead of 4:1

Havent had a silent running off batteries because I don't have an inverter. So im thinking what to do next.

Sure wish I knew which is a better way to go in the long run. People are worried about my electrolysis.

Very happy , I credit this group Thank You all.

Ps your original recommendation of 6:1 appears right on . You da man !!!!

  Yesterday someone at the dock just about gave me a golf cart motor. model 5BC48Jb247 36 volt. ?