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So does it work in reverse as well?

Great video, i understand how this system works a little more now, but can anyone explain why my front diff engages when switch is in 2 WD, and the rear wheels are spinning in snow? could it be worn front diff parts causing it to engage without the coil being activated?

Very cool. I believe that other Polaris models have a similar system but they are located independently in each front wheel hub rather than in the differential.

Good job, thanks.

6 years later this is still the best video to explain how it works

This video has aged well. Thanks for sharing.

My bike sounds like it's missing a gear in 2wd or it's lost bearing, but when I click the switch in to 4wheel drive system on its not as bad ....how do I find this problem its sounds like its the front but not sure ....help me plz!! Thank you in advance !!

why would my bike stop moving it locks up so it does not move

It’s like an actuated one way bearing, kind of. Very helpful video, thanks.

Excellent explanation. Thank you.

Hey man excellent job and I appreciate you takin out of your own time to make that video keep up the good work dude. Oh BTW I rarely ever (EVER) leave a comment But dont"t stop shining bro Light It up out there.

Thank you

Hello, good video explanation, question if in dash ligths on the 4wd it means working? Or it can be ider not working

Your mind works like mine. I got it. Wonder explanation, thanks.

That makes more sense as to why it locks up sometimes when you push the button to take it out. And why you need to reverse a little sometimes after. Good explanation.

Very nice! Similar to a fishing reel with an anti reverse. I also have a few ratchets that work on the same principle. Seriously, thanks for sharing this. Without it, I wouldn't have known how it worked.

Thanks for making this. I would encourage you to think more about what you’re gonna say before you say it, because you’re not doing a good job at transferring the info. You lost me

what is the set screw that has a magnet on it for and how do you adjust it

Great explanation! Thanks for showing us how this works!!

That’s incredible engineering

So if 1 tires spins but the other one don't is that a broken magnetic plate is the 2 of them plates one for each side

Great video! I have a 2014 Sportsman 550 X2 the issue I am having is my 550 has no 4-wheel drive while going forward but as soon as I go in reverse 4 wheel drive works. I saw this video and was hoping i can figure out what's going on, if anyone can help me with this issue it would be greatly appreciated.

The rear wheels actually spin faster than the front wheels. The front wheels only engage when the rears are slipping.

Great explanation

Love this video! Thank you for explaining

My 2000 polaris scrambler 500 is slightly different. Still functions similarly but not exactly the same. It has a front differential "gear box" that is centered between the front wheels. That has a shaft out each side that connects to the CV axel, which connects to the "Hillard clutch" that is located inside the wheel hub assembly. There is some sort of "slip differential" to the system when you are in 2WD. When you are in 2WD and stuck in mud, the front wheel(s) will engage automatically. When you move the selector to "AWD" it will in fact give power to the front and rear wheels at all time. I believe that just one of the front wheels engage at a time but I'm not sure...it my be both. Another way I have seen this work is when the chain popped off the sprocket on the rear wheels. When it did this, the quad was still driving by using the front wheels only, and this was when it's in 2WD. There is nothing broken with it, this is how it work. I saw others comment on seeing just 1 front wheel spin in a video and were concerned there were issues...that's not the case. The person in the video just had it in 2WD and the rear wheels were spinning. The AWD selector locks the front and rear together whether you are spinning or not. I love the system. There really is never any need to set it to AWD, as the quad automatically sends power to the front when needed.

Sorry bud but what you are holding is actually called roller bearings for the front differential is actually called gear bearings!... 🤙👍👍👌🤯🙌

Wow great video thanks for the explanation I have the same machine so I'm learning a lot you are very smart and I appreciate the delivery of this video you explained it very well you are a great help thank you

Great video explaining how it works. Good job😊

I think you did a good job of explaining the function of the Polaris Demand Drive and I already knew how it worked. It made sense to me. Thanks.

There is definitely power to the front in 4wd, my 2006 scrambler had a bad chain so I was replacing it but had to wait a few days and I was able to ride it in 4wd using only the fronts to pull me along. So it definitely does get power to the front on its own, I did however notice in sloppy conditions the front tires can actually spin a bit faster on occasion than the back tires. I've been looking into this 4x4 setup as I'm trying to learn how I can make a 4x4 race quad, using some Polaris parts.

Are both front tires suppose to engage when I turn on the AWD switch automatically or is it by weight distribution? I am asking because I feel that my front left tire is not engaging as much as my front right tire.

Thank you Nathan ...great video ! I understand now how it works 4WD from my Polaris 500 EFI Sportsman . But i have a question for you ! It is not very clear for me when this mecahanism is engaged the another shaft side is blocked ? Or is free ...? I mean we have all front wheel drive simultanesly or is a kind of diferential ? Thank you

That for a 2003 polaris 500?

So, how could one make this so I get the same power to the front as I do in the back?

Nice thank you for that, appreciate it.

A little long but if paying attention, it comes to ya. Good job. You helped a lot of people understand it.

I have a polar sportsman H.O. EFI model 2008 and I found that in reverse it does not engage the face! What would be the cause? and sometimes it stops at idle when the engine is hot!

what can cause the front wheel to lock up?even this differential broke, it will not lock the front wheel, but drive the front wheel

Well done, sir. Thank you. Couldn't find this information anywhere else. I'm assuming they carried a similar system into the new RZRs.

I have a 2004 Polaris sportsman 500 On demand AWD and it is staying in AWD all the time any advice

I’ve been trying for a long time to find out how this differential works and your explanation and how you are showing how it works really made it simple to understand,. Now I don’t have to think about that anymore 😊 Great job and thanks for the explanation 👍🏻

Good job on the video explaining the workings.

Video helped out a bunch also I can't find how tight supposed to adjust the screw for the plate that goes up against the diff gear any idea on that?

Awesome explanation! Thanks

One thing that you left out that is crucial to the operation is that the front gear is a different ratio than the rear. With the front locked in and all four spinning, the rear tires will turn 5 times and the fronts 4 times.

Thanks a lot for the knowledge that you have provided. I was curious how on demand differential work. Now I know.

YOU are a superstar. If you’re passing Oxfordshire, UK: I owe you a drink. 👍🏻

NICE! Love the explanation, thanks!

Good system or is traditional 4x4 better??? in terms of reliability seems like it would be best to engage 4x4 while theirs no power going to wheels. Also if you have your front wheels pinned up against a rock or a log your going to have to slip your back tires for the front wheels to clim up over the obstacle. Just shopping for a new ATV and trying to do my research!