I don't know for sure but the 4x won't kick in above 3100rpm. So if the computer receives it's rmp signal from the speedometer it would make sense.

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Look for an unplugged connector near the rear of the motor. That is the speed sensor, and without it, the 4 WD doesn't know it is supposed to engage.

 

Not sure what year yours is, but looking at diagrams for a 2013, the switch just feeds a ground signal to the ECM, which when sensed, activates a ground from the ecm to the coil in the front diff. the "drive" fuse in the fuse box feeds power directly to the coil in the front differential. I'd check the drive fuse first, if that's good (and has power, make sure there's power to the red/dark green wire when they key is on at the fuse and front diff), i would think the cluster not working properly may not allow the ecm to send a signal to the front diff coil.

 

thanks folks i will have a look and see

 

MRC, you might want to pick up a snatch block, it will double your winch pull,
John

 

Deleted by FlatBlack

 

Flat, so let me get this right, If I run my rope out to my snatch block then back to the RZR, I lave not gained a 2-to 1 advantage? I know here that for every foot I winch, the rzr moves 6"!!
John

 

Deleted by FlatBlack

 

My understanding of mechanical advantage and using the diagram above, is that a single pulley, only a allows for a direction change. I have used this in rock crawling many times to winch someone off their side, up a hill, etc, when a straight pull was not available.

If you stand on a skateboard, tie a rope to your waist, run it out through a snatchblock and back into your hand so you can pull yourself along, you have not created any mechanical advantage. You have only changed the direction of the pull so you can pull yourself. If someone in front of you stood stationary and pulled the rope hand over hand, you would move towards them one foot for every foot of rope they pulled in.

If that rope were to go out to 90* to one side of the snatch block and someone else were to pull on that rope to make you roll along on the skateboard, for every foot of rope they pulled, the skateboard would still only move one foot.

I dont see where the reduction or 2:1 advantage could possibly come from only using a single pulley.

Try this: Wrap a string, cord or rope around a door knob, the foot of your desk, etc and hold one end in each hand. If your left hand moves 6" back, it will pull your right hand up 6". There is no 2:1 reduction.

If you were to hand the end of the winch rope to your passenger and he pulled on it to get you unstuck while still sitting in the seat, for every foot of rope he pulled in, the RZR would move one foot forward. With the winch, you are just winding cable onto the winch drum instead of pulling it by hand.

Hope that helps

In your example, if the doorknob were the snatch block and it was attached to the object being pulled (Rzr stuck on a stump), you have just created a 2:1 ratio. Winch in one foot, move object 6". Similar to a basic block and tackle, and the mechanical advantage is significant no matter how much cable is pulled off of the drum.

 

This is from warn
look at last page

http://www.warn.com/corporate/images/90/TechGuide_PN62885-A2.pdf

 

The biggest advantage i find with a snatch block (i have a wrecker service and do professional off road recovery), is that it allows you to get some wraps off the drum and increase your pulling capacity.

 

Deleted by FlatBlack

 

Deleted by FlatBlack

 

Mike, you are absolutely correct. However, when most people use a snatch block, they attach it to the tree or another fixed object, as in the example at the top of this page:

Pulley Systems | ropebook

If the snatch block is attached to your RZR, you are winching your RZR and the winch is attached to your RZR, you will need a second snatch block to make it all work. This does in fact create a 2:1 advantage and is exemplified in the link above as well.

Another option is for me to use my RZR and winch to pull YOU out of a mud hole with the snatch block ONLY attached to your RZR. This causes your RZR to move 6" for every foot of cable my winch pulls in, but only because they are two separate systems. You cant do this on your own, which is what the Original Poster tried. The RZR & driver were alone and trying to winch himself out. A snatch block on a tree does nothing to help him in that case, in the way of leverage of mechanical advantage.

Okay makes sense- so if you're winching yourself out, you would need a 2nd snatch block to gain the 2:1 ratio, and hopefully a long cable Lol!

 

FlatBlack has it correct. To get any kind of benefit from a block and tackle set up you have to at least have 2 pulleys. A simple snatch block is still 1:1.


HowStuffWorks "How a Block and Tackle Works"

 

I think you guys are off. I agree with midnight. You can gain a mechanical advantage with on pully. The small spool diameter helps as well but you can gain a mechanical advantage with 1 pulley. Even according to Warns website if you out a block on a fixed point in front and run it to that point and back to your machine its doubling your pulling power. Or to some extent minus friction and other factors. Even with one pulley your making a 2:1 pull. If you have 10' there and 10' back and pull the winch in 1 foot you now have 19 feet and you have moved from 10 to 9.5 feet away. Not a 1:1 ratio. This is why block and tackle works more each strand you have. If the two ropes there and back both support the tension (if your hooked to yourself) you have a 2/1 advantage. If one rope is not hooked to you only 1 rope supports the weight and it is a 1:1.

http://www.gowarn.com/warn-winches/winch-tips.aspx

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You cats are on some good stuff, the original statement meant you hook the snatch block on a tree run your winch cable through the block and back to your razor and hook it. This will give you a 2:1 ratio. It'll work every time.

 

Exactly^^^ I don't know what these other guys are talking about.
If you hook snatch block on tree and end of cable to another machine (not the one the winch is on) then yes it is a change in direction.
If you hook the snatch block to the tree and the hook back to the same machine the winch is on then you have gained a 2:1 advantage.

O. This is a 2:1
| |
| |
¿ |
Rzr

O------------u
|
|. This is a change in direction
Rzr

http://www.hardworkingtrucks.com/maximizing-winch-pull/

 

...

 

Deleted by FlatBlack

 

Last ditch effort, then I give up:

In the first picture you see headphones wrapped around a "snatch block"

In the second picture, note the numbers on the rulers (center of jack/plug) and (center of ear buds)

In the third picture, note that when one side moves down 5 inches (from 6 to 11), the opposite side moved UP 5 inches (8 to 13).

There is no 2:1 advantage here. Pulling on the rope or winding it onto a winch drum does not matter. If your snatch block is attached to a tree and you are winching yourself out of a mud hole, for every foot of rope you pull in, your RZR is going to move one foot. It is simply the laws of physics and you cannot change that.

Lesson over, give yourself a pass/fail.

I'm going to the house...

You want a better example grab a rope and tie it to a ceiling try to climb it with just your arms. Not tow the end of the rope around your waist string the other end through a snatch block and try pulling on the rope to lift yourself again.

I'm not going to keep trying to explain mechanical advantage. This was a part of my journeyman ticket.

 

Lesson over. Give your self a pass or fail?
Then I passed. You fail to understand what we are explaining to you

 

Okay so I just went out and proved it to myself. I connected my snatch block to my truck hitch. Ran my winch cable thru it and connected it back to the front of my SxS. SxS in neutral, pull in 2' of winch cable, SxS moved 2'. Then I set the brake on my SxS and put my truck in neutral. Pull in 2' of winch cable, truck moved about 1'. Seems legit.

 

The distance should have been the same for both if you didn't change the setup. The truck and sxs should have gotten 1' closer together for every 2' of cable you pulled in on both try's.

 

If you look at the object with the winch on it. How many lines come/go from that object. Is what the mechanical advantage is.
The confusing part for most people is the object that's moving is normally the one with the winch on it in our case. Where with a crane the moving object it the other one. Makes it tricky to identify it easily
First one had one line from the vehicle so it's 1:1
Second has the line leaving and line comming back 2:1
Third has the line leaving, comming back and leaving again 3:1

 

All I can say is to actually try it for yourself. Easy to do.

 

So what you are saying is that if I am 50' from a tree and I stretch all 100'of my winch cable out around the tree and back to my truck, I will have to pull all 100' of my cable to make it 50' to the tree

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Yes. Because it's 50' to the tree and 50' back to the rZr (100' total line) . If you pull all 100' of the line back in your rzr should be touching the tree.

 

Okay so I tested it again this time with my wife controlling the winch so I could get more accurate measurements. This time I wound in 16' of cable and the SxS moved 8' Same result with SxS anchored and pulling the truck. My first try was invalid due to my fumbling around trying to measure movement while operating the winch.

 

OMFG READ THE WHOLE POST!!!!

He did it again and said he was wrong the first try!

GIVE IT UP YOU ARE WRONG

 

"Thumbs up"

 

After seeing the mathematical aspect, I agree is increases pulling force. One more thing to consider when using a snatch block, is the rating of your winch mounting point and the anchor point. If you have a rzr bumper rated for a max of say, 5000 lbs, and use a snatch block you may tear something up.

 

Good point. As long as you don't have the end of the line Hooked to the same point the winch is mounted to. Both ends of the line would share the pulling force. As the winch will only pull the single line at the rated amount of the winch. But both lines would have the same amount on it. If that makes sense.

 

I was talking about this a bit at work and my dad reminded me about one of our bumpers on a recovery rig that I forgot about. 10000lb winch with THREE snatch blocks trying to pull out a stuck medium duty truck, rolled the winch and mounting plate into the bumper tube, never budged the stuck truck.