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Posted by John T on December 14, 2011 at 17:11:36 from (173.243.181.15):

In Reply to: Re: OT winch on trailer posted by dave2 on December 14, 2011 at 14:51:31:

Sure wish I could help, maybe some of the other more current in the practice electricians, engineers, mechanics and sparkies can help, but its my engineering "opinion" NO ONE can accurately compute the "real answer" you mentioned unless we know the actual load placed on the winch and its own friction inefficiency. I'm rusty as an old nail on this stuff but heres kind of an OLD rusty engineers approach to answer what we can based on what few facts we have


1) For starters, if his drill draws 6 amps at 120 volts, that computes to 720 watts to operate it (Another conversion factor comes to mind, 1 HP = 746 watts if I recall correctly). So, if you had an inverter rated for 1000 watts with a sufficient surge capacity (perhaps 1500 to 2000 watts, we would need the drill and inverter actual specs) allowing the drill to start ITS MY ENGINEERING "OPINION" THAT WILL RUN THE DRILL provided the drills load isnt greater then its capacity. You're only putting x amount of energy into the drill and its NOT 100% efficient, so you cant get more energy out of it then its input

Hey if the drill draws 6 amps and the load is such???? that the drill is producing sufficient HP at a 6 amp draw to maintain operation of the winch and its load, WELL THEN IT WILL WORK But we dont know the load on the winch now do we, so how can we say??????


2) HOWEVER THE QUESTION WE CANT ANSWER AS WE DONT KNOW THE LOAD PLACED ON THE WINCH is if the drill will operate it????????????????????

3) Let me point out why we cant provide the "real answer" you asked about by posing a few questions....

a) Whats the weight of the item being winched?
b) Is it on wheels or being drug along and
whats the drag friction???
c) Whats the rolling friction if on wheels
d) Whats the angle of incline, if any
e) What is the winches efficiency. It has
gears and they produce friction and heat so
there are losses

ARE YOU BEGINNING TO UNDERSTAND WHY WE DONT HAVE ENOUGH FACTS TO OBTAIN THE "REAL ANSWER"

It takes x horsepower just to turn all those heavy winch gears you know, so some of the energy the drill puts into the winch gets dissipated as heat WHICH MAKES THINGS EVEN WORSE

I will still venture a few pure educated guesses if that helps answer your question???

1) Id GUESS that 6 amp 120 volt drill will turn that winch if theres no load placed on it

2) Id GUESS if you were winching a light lawn mower on wheels up no greater then a 10% incline the 6 amp 120 volt drill will work

3) Id GUESS if you tried to winch a 10,000 LB truck up a 30 degree incline loading ramp that 6 amp 120 volt drill WILL NOT WORK

SOOOOOOOOO never say never and Im always willing to learn, so if someone can tell us if that drill will operate the winch successfully without knowing the load, the weight, the incline, the rolling or dragging friction WELL I JUST GOTTA HEAR THAT LOL

That being said I will venture another pure guess and "opinion" that drill isnt very practical as far as being to pull much weight up much of an incline being operated off an Inverter. ITS JUST DONT SOUND VERY FEASIBLE TO ME IF HE NEEDS TO PULL VERY MUCH WEIGHT.....

All are entitled to their opinions but NOT their own facts so I hope other engineering and technical types and sparkies can give you the "real answer" Sorry I just cant not knowing the load placed on the winch and drill.......

Some of us here like me LOVE engineering and sparky chat and hearing other opinions (agree or disagree), Im sorry if it bores the others

God Bless Yall and Merry CHRISTmas

John T


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