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Will a 3000lb electric wench #1048214
08/06/11 04:36 PM
08/06/11 04:36 PM
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N/E, Michigan
RATTRAP Offline OP
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Will a 3000lb electric wench Pull my 3400lb car onto a trailer?? What lb rating is the avarage every one uses

Re: Will a 3000lb electric wench [Re: RATTRAP] #1048215
08/06/11 04:53 PM
08/06/11 04:53 PM
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69CHARGERMD Offline
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Found this,,,,the link gives a table for ground effect percentages,,,and effort required,,,,,


Calculating Winch Loads

Total Weight = Vehicle Weight + Load weight

Winch Pull = ( <Slope degrees> * Total Weight /60)

Ground Factor Weight = Winch Pull * Ground Effect Percentage

Winch Load = Winch Pull + Ground Factor Weight

Example. Given:

* Vehicle weight = 4,400 pounds
* 300 pounds of total load weight
* winch up a 50 degree slope consisting of shallow mud

Total Weight - 4400 + 300 = 4700

Winch Pull - (50*4700/60) = 3917

Ground Factor Weight - 4,700 * 35% = 1645

Winch Load - 3917 + 1645 = 5562

http://www.4wd4all.com/forums/attachment...012&thumb=1

Re: Will a 3000lb electric wench [Re: 69CHARGERMD] #1048216
08/06/11 04:58 PM
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69CHARGERMD Offline
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not sure what the "slope" is your pulling your car up,,,,but,,,
eg,,if you use the 50* as below,, and your on pavement,,i think you would be ok...or close.....

Total weight = 3400

Winch pull = 50*3400/60 = 2833

Ground factor = (pavement) 3400 * 4% = 136

Winch load = 2833 + 136 = 2969

hope this helps....

Doug

Re: Will a 3000lb electric wench [Re: 69CHARGERMD] #1048217
08/06/11 05:04 PM
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I dont think the sloap is even 60 deg its a flip down back door on the trailer, I also padded a couple of hundred lbs to the car its prob around 3200lbs

Re: Will a 3000lb electric wench [Re: 69CHARGERMD] #1048218
08/06/11 05:05 PM
08/06/11 05:05 PM
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I use a 3000lb Superwinch to pull my 3250lb Duster on my open trailer. No problem at all.

Raul

Re: Will a 3000lb electric wench [Re: RATTRAP] #1048219
08/06/11 05:10 PM
08/06/11 05:10 PM
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Romeo MI
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Most winches are rated to pull a vertical load...
as in your case 3000 lbs it should lift 3000 lbs
vertically... so when you induce a drag weight it will
pull MUCH more than the rated lift weight... I use
a 1500 lbs winch to pull my car up a pretty good angle
on my ramps.............. but I guarantee your 3000
lbs winch will pull your 3400 lbs car up a set of ramps
all day long

Re: Will a 3000lb electric wench [Re: MR_P_BODY] #1048220
08/06/11 05:17 PM
08/06/11 05:17 PM
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Erda, UT
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You're calculating it backwards. The slope is the angle of the ramp to level ground, and is usually about 10° to 20° for trailer ramps. The 50° was just an example for winching a truck up a steep, muddy slope.



Total weight = 3400

Winch pull = 10*3400/60 = 567

Ground factor = (pavement) 3400 * 4% = 136

Winch load = 567 + 136 = 703


Total weight = 3400

Winch pull = 20*3400/60 = 1134

Ground factor = (pavement) 3400 * 4% = 136

Winch load = 1134 + 136 = 1270


Last edited by 67Charger; 08/06/11 05:24 PM.

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Re: Will a 3000lb electric wench [Re: 67Charger] #1048221
08/06/11 05:19 PM
08/06/11 05:19 PM
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Romeo MI
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Quote:

You're calculating it backwards. The slope is the angle of the ramp to the ground, and is usually about 10° to 20° for trailer ramps. The 50° was just an example for winching a truck up a steep, muddy slope.




I dont think your talking to me on that

Re: Will a 3000lb electric wench [Re: MR_P_BODY] #1048222
08/06/11 05:23 PM
08/06/11 05:23 PM
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Erda, UT
67Charger Offline
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Quote:

Quote:

I think you're calculating it backwards. The slope is the angle of the ramp off level, and is usually about 10° to 20° for trailer ramps. The 50° was just an example for winching a truck up a steep, muddy slope.




I dont think your talking to me on that





nope, 69CHARGERMD


11.33 @ 118.46 on motor
10.75 @ 125.35 w/ a little spray
Now, high Speed Open Road Racing - Silver State Classic Challenge, Nevada Open Road Challenge, Big Bend Open Road Race
Rocky Mountain Race Week 2020, 2022 2.0, Sick Week 2023
Re: Will a 3000lb electric wench [Re: MR_P_BODY] #1048223
08/06/11 05:26 PM
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RATTRAP Offline OP
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Now i just need the rain to quit so i can go out and install my new toy,

Re: Will a 3000lb electric wench [Re: RATTRAP] #1048224
08/06/11 05:30 PM
08/06/11 05:30 PM
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Romeo MI
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Quote:

Now i just need the rain to quit so i can go out and install my new toy,




Just starting here(rain).... if you have a 3000 lb
winch it will pull 4500 lbs up a 45* slope(add 1/2
the rated weight... then if you want to figure the
rest of the angles.... go for it)

Re: Will a 3000lb electric wench [Re: MR_P_BODY] #1048225
08/06/11 05:42 PM
08/06/11 05:42 PM
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KENTUCKY
69CHARGERMD Offline
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Quote:

You're calculating it backwards. The slope is the angle of the ramp to level ground, and is usually about 10° to 20° for trailer ramps. The 50° was just an example for winching a truck up a steep, muddy slope.




I just left 50* as a example...i assumed his angle was less than that...
thanks.

Re: Will a 3000lb electric wench [Re: 67Charger] #1048226
08/06/11 05:54 PM
08/06/11 05:54 PM
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New York
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Total weight = 3400
Winch pull = 20° × 3400 ÷ 60 = 1134
Ground factor = (pavement) 3400 × 4% = 136
Winch load = 1134 + 136 = 1270

That looks better, but please note that the angle input is not proportionate to the actual forces. The usual test with a formula is to exaggerate a variable in both directions and see if the results make sense.
Here, a vertical pull would mean multiplying by 90, but 90 ÷ 60 isn't the vertical pull, it's much more.
I have a feeling that the variable you want is a trig function of the ramp angle, rather than the angle ÷ 60.
Example: with a 20° ramp, the variable should be .333 (20 ÷ 60). The sine of 20° is .342, pretty close (2.6% error).
Use 10°, should get .1666667 (10° ÷ 60). The sine is .174 (4.2% off)
Really steep ramps, like 45° and up, are where the angle/60 method begins to fail: 45 ÷ 60 = .75.
The sine of 45° is .707, a lower figure.
Using 60°: the above method says the load is 1.00 (same as vertical), but of course it isn't, it's probably the sine, .866.
Go to 90°: the sine of 90° is 1.0, so the calculation exactly equals a vertical pull (whereas the above method predicts 1.5).

If the winch is too small but has a long cable, just use a pulley (or more than 1). Running the line to a pulley at the load, then back to the winch almost doubles capacity (some minor loss through friction and cable bending). The cable length must be doubled, but of course if splicing it the added cable can safely be as small as 50% of the original rated load.

Last edited by polyspheric; 08/06/11 06:03 PM.

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Re: Will a 3000lb electric wench [Re: RATTRAP] #1048227
08/06/11 05:56 PM
08/06/11 05:56 PM
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SOUTH JERSEY
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Quote:

Will a 3000lb electric wench Pull my 3400lb car onto a trailer?? What lb rating is the avarage every one uses




also what you need to know and is very important is the line speed. I just removed one that took so long to get the car into the trailer you could take a nap.


home of the
Sox and Martin Hemi Duster


Re: Will a 3000lb electric wench [Re: HEMIFRED] #1048228
08/06/11 06:14 PM
08/06/11 06:14 PM
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KENTUCKY
69CHARGERMD Offline
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I think i figured it out LOL...

(Im going to leave the math to you guys,,,lol)




Re: Will a 3000lb electric wench [Re: 69CHARGERMD] #1048229
08/06/11 06:33 PM
08/06/11 06:33 PM
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Does anyone want to go out on a limb and recommend a winch


It really doesn't matter whether you win or lose…
as long as you look good doing it!

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Re: Will a 3000lb electric wench [Re: BloFish] #1048230
08/06/11 06:43 PM
08/06/11 06:43 PM
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Alexandria, LA
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Blucuda413 Offline
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Harbour Freight has a new line of winches and currently have a 5000lb unit on sale for I believe $250.

Re: Will a 3000lb electric wench [Re: MR_P_BODY] #1048231
08/06/11 06:54 PM
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Quote:

Most winches are rated to pull a vertical load...
as in your case 3000 lbs it should lift 3000 lbs
vertically... so when you induce a drag weight it will
pull MUCH more than the rated lift weight... I use
a 1500 lbs winch to pull my car up a pretty good angle
on my ramps.............. but I guarantee your 3000
lbs winch will pull your 3400 lbs car up a set of ramps
all day long



For sure. I pull a 4K car on to my trailer with a 3K winch with ease.


Fastest 300
Re: Will a 3000lb electric wench [Re: Blucuda413] #1048232
08/06/11 06:55 PM
08/06/11 06:55 PM
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SOUTH JERSEY
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Warn and your safe


home of the
Sox and Martin Hemi Duster


Re: Will a 3000lb electric wench [Re: HEMIFRED] #1048233
08/06/11 07:25 PM
08/06/11 07:25 PM
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Rock Springs
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My ATV had a small wench which was 1500 maybe 2000 lbs rated. It pulled my Dakota onto a flat bed open trailer a few times... No problems... if a 3000 wench cant do this, its JUNK.. I would avoid the cheaper harbor freight type wench's.


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