over ride 4x4

[3taz11]

i want to make my 2 sportsmans (800 ,500) true four wheel drives .so when i put it in 4 wheel it is in. is there anyway to do this?

[Thor]

Here you go. Hey! Looking for A Sportsman Reverse Override kit? Then Click Here!

[blueline15]

Do you mean like removing the reverse override like the kit Thor linked...or locking in 4x4 in forward when you flip the switch. I highly do not recommend trying to lock the 4x4 in full time forward movement. There is no good way to do it, and you'll have very unhappy results.

If you want it just for reverse, use the kit Thor linked.

[09wingates]

Ya hes talking about when you flip the switch into AWD it will be in full time 4wd like every other 4 wheeler on the market. The problem with this is being that Polaris machines lock all 4 wheels when it kicks in would be that when you try to make turns or drive on a semi-hard surface it would be a b&*%^ to steer. Most ATVs today only kick in one tire when 4wd is selected but there is normally a lever on the handlebars that you can use to lock both front tires in if need be. I personally like Polaris's system I hardly ever notice when it engages and disengages.

[polman500]

yeah, you can go into the front final drive and wedge the rollers so they stay engaged all the time like what happens when they mess up. You'll have "full time" 4x4 and huge shoulder and upper arm muscles after a while from steering a bull by the horns all the time....good luck and have fun! Oh yeah, don't plan on making any tight turns with your machine after the mod.

[3taz11]

i dont want it in 4x4 all the time. more or less like a locker that you can use when needed when climbing on slick rock i want the front tires to pull me rather than kick in when the back tires are spinning

[blueline15]

Originally Posted by 3taz11

i dont want it in 4x4 all the time. more or less like a locker that you can use when needed when climbing on slick rock i want the front tires to pull me rather than kick in when the back tires are spinning

There is really no way to do that on a polaris with the way the system is designed. Its either going to kick in when the rears slip, or its going to be locked in 24/7 regardless what the switch is doing. You're likely best to get another machine like a yamaha that has the limited slip diff.

You could try wedging the rollers, but there is no guarantee it will hold in 4x4 as you climb.

This is what wedging is:

1) I regularly engage the AWD clutch for 4-wheel engine braking by causing the rear wheels to slip in reverse, stopping, then putting the machine in forward before descending the hill. Will this harm the clutch at all?

2) When I perform the above maneuver the clutch remains engaged, even while powering forward, until I switch off the AWD engaging coil. Is this normal operation for the clutch?

3) Is there a way to engage the clutch prior to wheel-spin, allowing me on-demand AWD?

----

Mr. Anderson,

The condition that you are asking about above is called "wedging". What you are doing is locking the rolls in the reverse profile of the clutch (it is a bi-directional clutch set-up) and proceeding in the forward direction thus not allowing the clutch to overrun (which is the normal condition). This in turn locks up the drive train and makes the system steer like a fully locked differential. This condition is

Advantageous if going down a steep hill because it will only allow the front wheels to move as fast as the drive train. This will fully utilize the engine brake because when going downhill the weight distribution of the bike goes to the front end and that is where you want the majority of your traction.



This "wedging" will not hurt the front gear case, but it could accelerate the wear of the the drive train components (such as the front prop shaft) because it does completely bind up the system and the bike

will be very difficult to steer. Because of the binding and additional steering effort, neither Hilliard nor Polaris will recommend doing this.



You can get the system out of the "wedging" condition without turning the power off to the AWD system, but it is very difficult and

not always repeatable. The only true, 100% way to release the clutch is to turn the power off and put the bike in reverse. This will release the pressure on the clutch and the springs inside the clutch will return

the rollers back to the neutral position.



To answer #3, there is no way to drive the front wheels at the same time as the rear wheels without the rear wheels slipping. The bike is geared to have a 20% speed difference from the back to the front.

This means that it takes the rear wheel to slip or spin 20% (1/5th of a rear tire revolution) before the front wheel to drive the system. This is necessary to give the bike a tight turning radius and to prevent the bike from automatically "wedging". If the front to rear ratio was 1:1, every time you turn the handle bars even slightly, the front wheels would act like they have a fully locked differential and it would take

you 30 feet to turn a 90 degree turn (like driving a new Kawasaki Prarie with the front gearcase locked). Becuase when you turn, all of the wheels on the bike are now moving at different speeds dictated by the ground speed, and the front clutch would not be able to overrun. With the 20% speed difference, the AWD can be on all the time and it will only be there when you need it. You won't get any of the side effects

of all the other systems that don't allow you to turn the 4wd on and off. Basically, having the front wheels driving the same speed as the rear wheels would be like driving a tank and would be hard on the arms

and not very fun.



I hope I have answered all of your questions and not confused you to much. Browse through the overrunning clutch section on the Hilliard web site (Hilliard Industrial Clutches, Brakes, and Oil Filtration) for more info on how overrunning clutches work if you have any more questions. Have a good day.



Thanks,

Matt Cowen

Engineering Product Manager

Drive Train Products

Hilliard Corporation

Not trying to be mean, just giving you an honest answer.

[superhub]

Thanks for posting that explanation of the 4WD system Blueline. I had a decent understanding of the way things worked but that filled in a few gaps for me. There really is a lot of misinformation and misunderstanding out on the trail. Good info.