Winch on a winch!

[dullbird]

Ok so I have a hypothetical question which has derived from us winching Phil out the other day.....funnily enough after we winched him out all 3 of us wondered about this very question

We winched out on a single line pull we were going to do a double line as there was some reasonable mud and slippery slopes involved however we thought we would try single fist see how we went. Pulled the car out fine.

Then the question came " I wonder if you could?"

Both vehicles have winches both winches are exactly the same brand and size both 9000lb winches. We wondered could you attach the hooks of both winches and from each car to each other and both winch in at the same time effectively pulling the car forward? If you could would this be considered the same as a double line pull or simply sharing the load.

I'm not saying anyone should do this and I have not done it myself we just wondered could you?

[vnx205]

It would be the same load as a single line pull. The load on each winch would be the same as if there was just one pulling. The only difference would be that the speed of the pull would double.

[uninformed]

I would think as you would have one vehicle "locked" into postion and be pulling the other, the load would be doubled if the "moving" vehicle became stuck propper

Im thinking about pulling a dead weight, then pulling the same weight with it pulling your same force against you...

just get a hyd winch :D

[Drover]

Surely it would have to share the load ! Half each !

It would differ from a double line pull as the retraction rate of the cable would not be reduced, as it is in a double line pull.

Maybe one of the Maths wizards can inform us one way or the other ?

[THE BOOGER]

I think Drover has got it both winches will pull at the same speed with the load shared between them 50/50:)

[uninformed]

grab a piece of rope and pull a cart with 100kg on it towards you. Now jam cart so it cant move. Now jam cart so it cant move and apply the opposite, same force on the rope as you still try and pull.

The facts are that if you are on level firm ground it will be one outcome, put it reality and its another.....

[uninformed]

I dont think the load will be shared. The speed would be double. Think of the total cable out between vehicles, If only one winches it takes say 10 mins to winch in. Same conditions now engage the other winch, it is shortening the total winch cable by the same rate as the first, so the time is halved....but the load is still the same...for BOTH winches not halved

btw everytime I scroll my cursor I go over the bloody pop-up....Im going to punch John carter in a minute

[Mudsloth]

Got excited for a minute, thought it said wench on wench.....


I want to put another winch on the rear of vehicle, attach one to one side of a really deep gully the other winch the other side of the gully and winch across mid air. Now THAT would be cool.....

[Drover]

I dont think the load will be shared. The speed would be double. Think of the total cable out between vehicles, If only one winches it takes say 10 mins to winch in. Same conditions now engage the other winch, it is shortening the total winch cable by the same rate as the first, so the time is halved....but the load is still the same...for BOTH winches not halved

btw everytime I scroll my cursor I go over the bloody pop-up....Im going to punch John carter in a minute

Can't see it, if a winch retracts cable at a set speed or meters per second/minute whatever it will do that speed regardless. Okay it may slow a little depending on the weight it is pulling or battery power.

Using a second identical winch, cannot increase the speed that either winch can retract its cable.

The only practical difference is that twice the power...half the load on each.

Both winches in Dullbird example have the to deal with a set resistance, one winch has to deal with all, two winches share the load. The speed of the retraction is not impacted on.

[Mudsloth]

My opinion on the question though is that if you tried this the universe would swallow itself and we would all be forced to drive nivas.....either that or both cars would disappear into each others fairleads leaving you all stranded.

[Judo]

It's definitely not the same as double line.
It would pull you out twice as fast.

HOWEVER you are doubling the maximum force that can be applied to the winch cable! You do indeed have double the pulling power, however over the same winch cable connected in the middle, NOT via a pulley, such as in a double line. In a double line, each section of the line is taking half the weight. I.E. No section of the cable is taking more than the rated limit on the winch.

2 vehicles with 9000lb winches and 9000lb cable each connected in the way you describe is the same as 1 vehicle with a 18000lb winch and 9000lb cable.

If the vehicle was REALLY stuck, something would break for sure...

Edit: just to confirm, the vehicles are facing each other in your scenario yes? That's my assumption.

[THE BOOGER]

Some confusion you are not connecting the cables to each other but to the cars themselves so 2 cables and 2 winches, doubles the winch power and cable capacity:)

[uninformed]

Yes, some confusion. I took it as the winch cables joined in the middle, I figured that would be obvious by my explanations....so in my example, speed would not increase for the winch/s themselves but the time would be halved.

[roverrescue]

Not sure about the loads - but it works and works well
One nasty Bathurst Heads trip we had a stuck tojo ute in the goop way in deep no trees worth a pinch of salt

I parked the fender on the hard and attached its winch onto the rear bar of the disco which drove off into the goop till he lost traction
then disco and tojo went winch to winch (with extension between)

So essentially 25m of fender rope to rear of disco - 25m of disco winch cable to 60 of extension attached to 25m of tojo winch cable)

Then all three vehicles just powered away till we could drive out

Obviously this isnt stuck fast to the rails or on steep rocks - just a failure to proceed in black soil mud

Cant see the problem and its definitely faster winch to winch
Load in this case was relatively unimportant but just think if each winch takes 5 minutes to spool its cable and you have to winch 50m total distance
One winch will take 10 minutes plus re-rigging an extension etc
Two simultaneous winches will take 5 minutes

Steve

[roverrescue]

Judo
I see your point but in my experience most low mounts will stall out way before they apply the full "9000lb" especially considering that once you get past the first wraps on the drum the "rated capacity" drops way down

S

[zwitter]

Scenario 1 cable to cable
Twice the speed of single line
Not twice the force as the sheer pin will still break at same point of overload.

Scenario 2 winch cables connect to opposite vehicle.
Same speed as single line and twice speed of double line
Same pull force as double line

assuming perfect world, ie winches identical

Both probably have risk of damage to winch but in competition, hell go for it!

Me I drive not to get stuck as I have a Tirfor. And that is the best form of education you can get!

James
Sent from my iPad using Tapatalk HD

[Drover]

Concfused :confused:

My understanding was the each winch cable was attached to each vehicle. So I stand by my theory.

In the case where the cables are link together in the middle, the speed would increase by double for sure.

The rating of winches, be 9000lb's or 12000lb's is worked out on the first roll of cable on the winch drum. For every addition layer of cable the capacity drops. Obviously caused by the increase OD of the drum.

[vnx205]

We wondered could you attach the hooks of both winches and from each car to each other and both winch in at the same time effectively pulling the car forward?

If the "each other" refers to the hooks at the ends of the cable, you have the same load on each winch and double the speed, as I said originally.

If the "other" means the other vehicle, you kave the same speed and half the load on each winch.

So the answer is, "It depends on what you mean by connecting to 'each other'."

[Didge]

If your mate is hanging over a cliff and you have to rescue him/ her and you're both hanging on by one arm each, you are feeling the full weight (force) of the person who is dangling through that one arm. Right so far? So, as we've all seen in the movies and would, no doubt, do ourselves we would employ our other idle arm and grab the dangling person's idle arm. There, we've halved the load on the first arm we used. So the load would be halved but the rescue, retraction speed would not. :)

[Judo]

Judo
I see your point but in my experience most low mounts will stall out way before they apply the full "9000lb" especially considering that once you get past the first wraps on the drum the "rated capacity" drops way down

S
You're probably right...

[vnx205]

If your mate is hanging over a cliff and you have to rescue him/ her and you're both hanging on by one arm each, you are feeling the full weight (force) of the person who is dangling through that one arm. Right so far? So, as we've all seen in the movies and would, no doubt, do ourselves we would employ our other idle arm and grab the dangling person's idle arm. There, we've halved the load on the first arm we used. So the load would be halved but the rescue, retraction speed would not. :)

Not if you were using that arm to hang onto something to stop yourself going over the cliff.:D:D:D

OK, I know you said the other idle arm. :D

[Blknight.aus]

there are 2 scenarios possible here.

I'll use perfect world examples and at no point will i consider miscellaneous factors Just maximum numbers.

In black,
I'll assume that both winches will pull a steady 9000lb for the whole pull and not take into account the dropping of the line pull as the winch drum diameter increases as cable is wound on nor the increase in line speed as that occurs. Naturally both winches wind at the same speed.

In blue I'll give a simple rundown on what tends to happen in a basic real life example

IF you set up to recover hook to hook both winches experience 9000LB of pull once winching commences. Both winches will wind in at the same speed so with one vehicle anchored its line will wind in its hook at a set speed If the second vehicle starts to winch then it will winch towards its hook at the same speed. As the hook is moving towards the anchored vehicle at Xm/min and the second vehicle is moving towards the hook at the same Xm/min then the overall speed of the second vehicle is 2Xm/min.

In reality it doesnt quite work that way, one winch will hold at its stall point as the second winch winds in then as the load comes off the first winch will begin to wind in. As the second winch is winding in more quickly it will wind on more cable and thus reduce its pulling power, at this point the first winch will do more winding untill the balance point is reached, both winches will wind in untill one or the other overloads and stalls before the load comes off and it begins winding in again. the vehicles overall speed goes up and down but usually averages out at something like 1.6-1/7X single winching speed if both winches are near enough to identical and wind on evenly. Typically winching this way, youd wind one winch in for 30 seconds and then the other, once you were out of the really properly stuck bit youd wind one winch in all the way (it takes more juice and makes more heat starting the winch under load compared to continuous light winching) then winch the other one in.


The main advantage of this kind of winching is that you get double the recovery range.

The second method is hooking the winch of each vehicle to and anchor point on the other.

This method double your pulling effort but not range or speed.

Vehicle A is winching its hook at Xm/min and YKg of tension
Vehicle B is winching its hook at Xm/min and the Same YKg of tension.
the winches are winding at the same speed but as the winch of Vehicle A is stationary and the hook of vehicle B is attached to the vehicle the line speed does not increase however the amount of pull is increased X2 as you have 2 seperate winch configutations working. Xm/min and 2YKg of pull.


In real life one winch will work faster than the other pick up more load and slow down untill the second winch begins to take up some of the load. In the case of electric winches once both cables are taut they will stay that way untill some one runs out of batteries or stops winching. The biggest advantage of doing this is it doubles your pull, In reality you wouldnt do it as you would be unlikely to be able to anchor the anchoring vehcile well enough to prevent it from pulling free and if you had enough ability to anchor it well enough you would usually setup a second anchor and winch directly from that with a snatch block or the recoveree's winch.


Yes, I have been that bored and messed about with this...

[dullbird]

I thought this would get everyone brains going :p

[Yorkie]

phil needed winching! :o
looking forward to those pics...:D

[THE BOOGER]

I thought this would get everyone brains going :p

Trouble maker, ask a hard question then disappear:D

[Slunnie]

Ok, here is the definative answer! :D (unless I'm wrong)

Hook to hook:
Line speed doubled
Pull force maintained

Hooks to bars
Line speed maintained
Pull force doubled.

Much like using a lever (such as a gearbox or pully), we see the power doubled over single winch from the additional winch, and the additional power is seen as either increased line speed or increased pulling force.

This said, the assumption here is that load vs winch speed has a linear correlation... which it does not.

[uninformed]

the real answer is, both winches will crap out, break shear pins, cook motors and kill batteries.......:angel:

[Homestar]

Just to add to the confusion a bit - there is some talk here of a double line pull. Did the result of this conversation yield any result from previous discussion? I thought that running a cable through a snatch block back to the rig halved the speed, but didn't provide and mechanical advantage - what was the result of all that...?

[John W]

Just to add to the confusion a bit - there is some talk here of a double line pull. Did the result of this conversation yield any result from previous discussion? I thought that running a cable through a snatch block back to the rig halved the speed, but didn't provide and mechanical advantage - what was the result of all that...?

Please explain, your argument does not agree with school boy physics. By using a double line pull you have effectively done a reduction gear job by taking twice the time to move the same distance. In an ideal world 1/2 the load on the winch.

[Homestar]

I think you are right, but there is a huge thread on this and I ended up with a headache reading it all.:D Just wanted to know what the final outcome was - I've just been back to re read some of it, and I think you are right, but there was a lot of back and forth on all of this.

[Didge]

I think you are right, but there is a huge thread on this and I ended up with a headache reading it all.:D Just wanted to know what the final outcome was - I've just been back to re read some of it, and I think you are right, but there was a lot of back and forth on all of this.

Can't agree with you bacicat2000,
Imagine you are hanging off an overhead beam by one arm- all your weight is transferred through your arm to the point of attachment (your shoulder aka winch). Now if you have a piece of rope looped over the beam and you hang from both arms, half the weight of your body is distributed to each arm (one shoulder - winch, other shoulder - recovery point). The anchor point (beam, tree, rock, etc) still supports the full load. :)

[Slunnie]

Just to add to the confusion a bit - there is some talk here of a double line pull. Did the result of this conversation yield any result from previous discussion? I thought that running a cable through a snatch block back to the rig halved the speed, but didn't provide and mechanical advantage - what was the result of all that...?
A snatch block is quite literally a text book example of a mechanical advantage

https://www.aulro.com/afvb/images/imported/2012/07/761.jpg

[John W]

Can't agree with you bacicat2000,
Imagine you are hanging off an overhead beam by one arm- all your weight is transferred through your arm to the point of attachment (your shoulder aka winch). Now if you have a piece of rope looped over the beam and you hang from both arms, half the weight of your body is distributed to each arm (one shoulder - winch, other shoulder - recovery point). The anchor point (beam, tree, rock, etc) still supports the full load. :)

The argument is not what is happening in your anchor point but what is happening at each shoulder and clearly with two shoulder each shoulder is "shouldering" half of your weight. If you do not believe this then time yourself hanging from a suitable point by one hand and then time yourself hanging by two hands and I am sure you will be able to hang on a lot longer with the two hands thus proving the point beyond further argument that a snatch block will halve the load on your winch if you run the block off an anchor point back to your bull bar.

[Slunnie]

I think the hanging from a tree example doesn't demonstrate a mechanical advantage because there is no motion. It's merely sharing the load - concurrent forces.

[Didge]

If half the weight is carried by the winch and half by the recovery point, then the load on the winch is half of whatever it is. I can't see a logical argument against that. So if the winch is only carrying half the weight, when it is operated it is only retracting half the weight, hence the mechanical advantage.

[Homestar]

Woops - seems like i've opened the can of worms again here - sorry for the thread hijack:).

I thought maybe this had been worked out definitivley - just wondered whic way it went... apparenty the jury is still out.:D

Looks like some members did some actual tests which seem to support the mechanical advantage side of the coin.

Cheers from (the still confused) - Gav:)

[BigJon]

I thought maybe this had been worked out definitivley - just wondered whic way it went... apparenty the jury is still out.:D


No, the jury is in, the verdict has been read and everyone has gone home! :D

[Judo]

If I ever have to do jury duty, I hope the case is similar to this. ;)

[uninformed]

Woops - seems like i've opened the can of worms again here - sorry for the thread hijack:).

I thought maybe this had been worked out definitivley - just wondered whic way it went... apparenty the jury is still out.:D

Looks like some members did some actual tests which seem to support the mechanical advantage side of the coin.

Cheers from (the still confused) - Gav:)

the Jury may be out, but that does not change the result, the facts and physics.....

[Didge]

I'm feeling the need to conduct an experiment :)

[Blknight.aus]

Why not, I did.. (at tax payers expense... :) )

[Didge]

????? I haven't seen the results published in any journals yet! :)

[Blknight.aus]

this predated my AULRO time and apparently tests conducted by drunk soldiers are not considered to be scientifically sound.

[cewilson]

Slunnie is right in both scenarios. Never ever forget that your winch is mounted to your vehicle, which most importantly moves.....

[C00P]

Slunnie is right in both scenarios. Never ever forget that your winch is mounted to your vehicle, which most importantly moves.....
It's like having two blocks, one at the tree and one on the vehicle. Because the winch is attached to the end of the cable (through the vehicle bull bar) it's like having a continuous loop of cable between the two blocks. The winch then becomes a machine which shortens the cable, and it doesn't matter where you put it, as long as it's attached to the cable by its drum and its anchor point, you always get a 2:1 advantage. The reason you get 2:1 with the winch on the vehicle is because the anchor point of the winch is also doing useful work in moving the vehicle.
Take the winch off the vehicle and anchor it to the ground alongside the vehicle and you lose your 2:1 advantage. In this setup all the block on the tree does is change the direction of pull. The anchor point of the winch can't do any useful work because it can't move.
It's important to realise that this IS a 2:1 advantage, because the pull on the cable that holds the block to the tree can rise to twice the force generated by the winch (ignoring friction). So you need to be sure that it can stand the load. With a straight pull without the block, the load is limited to the force generated by the winch.

Hooking one vehicle to another and vice-versa is also like having two cables and two blocks, but now you have two devices to shorten the cable, so it happens at the speed of a single winch pull, but with twice the force. If you prevent one vehicle from moving, then twice the force is applied to the second vehicle (assuming identical winches) so you'd better be sure that the bullbar is firmly attached or you might pull it off!

Coop

[Old Farang]

................................................It 's important to realise that this IS a 2:1 advantage, because the pull on the cable that holds the block to the tree can rise to twice the force generated by the winch (ignoring friction). So you need to be sure that it can stand the load. With a straight pull without the block, the load is limited to the force generated by the winch. Coop
Yes, everything you have written is correct. In bold above is something that is very easily overlooked. It is one reason why tree protectors are rated around 12,000 Kg. But also easily overlooked is the rating of the bow shackle that you should use to connect the tree protector to the snatch block: it also should be rated at twice the pull rating of your winch.

[C00P]

But also easily overlooked is the rating of the bow shackle that you should use to connect the tree protector to the snatch block: it also should be rated at twice the pull rating of your winch.

Yep, spot on, all the tackle at the block end needs to be uprated.

The one I had more trouble getting my head around is the situation where the two cables are joined end to end.
First, I asked what would happen if a single winch was attached to a solid (immoveable) object like, say, Ayers rock. You engage the winch and the cable tightens, and then stops. Say the winch can pull with 1000kg, but the bogged vehicle doesn't move. Assuming the cable attach point, and the cable and winch structure can stand the load, and the winch doesn't burn out, then all the energy going into the winch is converted to heat. In effect, Ayers rock is resisting the pull on the cable by pulling back the other way at 1000kg (and it could probably do a lot more!).
Now replace Ayers Rock with another vehicle, winch and cable, joined to the end of the first cable. Engage your winch, and all that will happen is that the cable on winch 2 will spool out as the cable on winch 1 winds in. Now engage winch 2 (which can also pull with 1000kg). It will take up the slack, and then pull back the other way with an increasing load until it reaches its maximum of 1000kg, just like Ayers rock. If the second vehicle can't move, then everything stalls, and both winches expend their energy as heat. No useful work is done.
Now assume that one vehicle starts moving before the winches reach max load. The tension is now less than 1000kg, so both winches can start winding in, and the rate of closure of the vehicles can potentially rise to twice the rate of closure of a single winch. But the pull on the cable is no more than what one winch can generate. So there is no advantage, except that you have a cable twice as long, and you can get the job done faster. The two winches will, in effect, see the same load (ignoring friction and other random effects like drum diameters and so forth) and each will wind in as fast as it normally would with that amount of load. So the job gets done faster, but you don't gain any extra pull this way.

Coop
PS Just to throw another spanner into your thinking, the fact that the job is getting done faster means you have more POWER in this setup, but you don't put any extra load on the equipment. Fascinating, isn't it?:)

[Leyland1980]

This is the most infuriating thread ever!

Both the winch winch and particularly the snatch block debacle!

If snatch blocks were just witch craft then no one would sell them, no one would buy them, no one would use them and cranes would have to be a lot bigger!

[muddymech]

my theory on winch to winch is that the winch on the vehicle not moving will have the added force of the winch being pulled in on the moveing vehicle.
so if winch on stopped cvehicle pulls a 2500kg car then it has a 2500kg force on it, excludeing friction, now if the car being pulled attaches its winch onto the the other cable and pulls in at 1000kg force then the car that is stopped would now have a 3500kg force on the winch.

some one must know a college proffesor who can work this out woith some clever maths.

[Hoges]

You can demonstrate the principle with a couple of spring balances of different capacities hooked between the jaws of a floor clamp which you wind out slowly measuring the pull on each one ...indeed you can use threebalances to see what happens when the weakest one is stretched to capacity... then a bit further...it's quite enlightening! ;):twisted: :wasntme:

[C00P]

my theory on winch to winch is that the winch on the vehicle not moving will have the added force of the winch being pulled in on the moveing vehicle.
so if winch on stopped cvehicle pulls a 2500kg car then it has a 2500kg force on it, excludeing friction, now if the car being pulled attaches its winch onto the the other cable and pulls in at 1000kg force then the car that is stopped would now have a 3500kg force on the winch.

some one must know a college proffesor who can work this out woith some clever maths.

No clever maths needed. When you attach the cable of the stopped vehicle (vehicle A) to the winch cable of the car which needs a 2500kg pull to move (vehicle B ), what stops the cable from just spooling off Vehicle B's winch drum? Nothing, unless you somehow lock Vehicle B's drum. The lock would have to withstand a force of 2500kg if it is to resist the pull of Vehicle A's winch.
If you remove the lock, and engage Vehicle B's winch, it will have to pull back the other way with a force of 2500kg to resist the cable winding off it's drum. If it can only pull with 1000kg force and this isn't enough to move the vehicle, then it will be forced backwards by the pull of the other winch (and probably burn out). In this situation the tension in the cable will only reach whatever force winch B can apply to it while being turned backwards.
You can't escape the fact that the tension in the cable is the same IN BOTH DIRECTIONS.

Coop

[mattyg]

C00P's dead right. Its not witchcraft or something for supercomputers to figure out. Some old italian bloke figured it out a couple of thousand years ago.

Archimedes was a great mathematician and engineer who was born in 287 BC in Syracuse, Sicily. He is credited with the development of many of our modern day mathematical and mechanical principles (such as Archimedes' principle, the concept of pi, and geometric proofs) and machines like the lever, a pump, and pulleys. According to Plutarch, Archimedes had stated in a letter to King Hieron that he could move any weight with pulleys; he boasted that given enough pulleys he could move the world! The king challenged him to move a large ship in his arsenal, a ship that would take many men and great labor to move to the sea. On the appointed day, the ship was loaded with many passengers and a full cargo, and all watched to see if Archimedes could do what he said. He sat a distance away from the ship, pulled on the cord in his hand by degrees, and drew the ship along "as smoothly and evenly as if she had been in the sea."

Here is a link to some Mechanical Advantage setups I drew for another thread, if anyone finds them useful.
http://www.aulro.com/afvb/attachments/general-chat/49600d1344041878-practical-applications-4500lb-winch-image-3021343270.jpg
http://www.aulro.com/afvb/attachments/general-chat/49601d1344041930-practical-applications-4500lb-winch-image-1840578230.jpg

[muddymech]

i decided to go to the experts so e mailed warn see if they had an answer, surprisingly they replied quickly:

Good day Ian,

Thank you for visiting the WARN web page.

There are a couple different things that are occurring here that need to be taken into consideration when pulling loads with a winch. Take a look at the diagram below, a winch pulls rated load when spooling the first layer of wire rope onto the drum. So when you pull more wire rope off the drum, the winches load pulling capacity will be higher.

Now look at the lower chart that shows the line speed and motor current draw, and on the far right the pulling capacity by layer to better understand the first diagram.

Lets say the load being pulled is 3000 lb and you will be pulling off the 2rd layer in your single line pull scenario to start the pull. When making a single line pull, the winch will have more wire rope off the drum, so the winch will have a higher pull rating, so it will be drawing fewer amps and have a higher line speed.

When hooking the two winches together, each winch will see the same 3000 lb load, but they will be pulling off the 3th layer, and then the 4th layer more quickly, so the winch will have a lower pull rating, this will cause it to be pulling a higher load, drawing more amps and have a slowing line speed. The two winches should still be faster than the one, but not by much I don’t think.

Having the two winch hooks connected together and winch both winches in at once would not double the pulling capacity like using a snatch block, there is no mechanical advantage in this scenario.

The dynamics of a DC Series wound motor is they like to run at high RPM’s, they will run longer and cooler if the RPM’s can remain higher. Years ago an engineer told me that in almost every scenario our winch motor would run longer and pull more weight if the load was double lined compared to single lined when pulling the same weight. I would like to see an XD9000 pull a load single line. The two XD9000’s pull the same load hook to hook like you guys were suggesting, and then pull the same load double lining with a snatch block and record the results just to see what the outcome would be because I’m not exactly sure what they would be…

I’m going to ask one of our engineers your question also and see what he comes up with as well, but it may take a couple days to get a response back. I’ll pass on what I hear from him too.

https://snt122.mail.live.com/att/GetInline.aspx'messageid=37bedafa-dfdb-11e1-9a4e-002264c17aec&attindex=0&cp=-1&attdepth=0&imgsrc=cid%3aimage002.jpg%4001CD73AD.4B7F41E0&cid=4d4b06483c3c64de&blob=MHxpbWFnZTAwMi5qcGd8aW1hZ2UvanBlZw_3d_3d&hm__login=ianhall90&hm__domain=hotmail.com&ip=10.13.110.8&d=d6490&mf=0&hm__ts=Tue%2c%2007%20Aug%202012%2009%3a10%3a06%20G MT&st=ianhall90&hm__ha=01_ced5971a121e8d139b087298a8dfaf6509cfd233 2fa0e0a0ae8e2f57553c45b4&oneredir=1
================================================== ================================================== ================================================== ==
XD9000 12 Volt Winch Specifications



12V DC PERFORMANCE SPECS

Line Pull
Lbs.(Kgs.)

Line Speed
FT./min(M/min.)

Motor
Current

Pull by layer
layer/Lbs(Kgs.)

0

38(11.6)

70 amps

1/9000(4082)

2000(910)

14.4(4.39)

180 amps

2/8190(3715)

4000(1810)

11(3.35)

255 amps

3/7500(3402)

6000(2720)

8.67(2.64)

330 amps

4/7010(3180)

8000(3630)

6.88(2.10)

415 amps

9000(4080)

6.38(1.94)

460 amps

================================================== ================================================== ================================================== ===

Best regards,



Steve Schoenfelder
WARN Industries