I was reading on the "math" thread and someone stated that the Scrambler's 4x4 engagement is controlled by the slippage of the rear wheels. Is this right? Last time I looked I never saw any speed sensors or computer on my old 96 Scrambler. The front end is engaged by electrically operated mechanical hubs, am I right? I did notice that the front wheels are driven slower than the rear. This seems odd to me. Most 4x4 trucks have the front driven slightly faster than the rear wheels to aid in steering. I was thinking on going to a lower rear ratio to make the fronts very slightly faster turning than the rears. Any thoughts/experience with this?

 

it doesnt exacly have a computer, but look under the hood, a hefty amount of circutry,
they spin slower because you probably have the wrong tire ratio on like mine does,
make sure the rears are once inch smaller in diamiter than the fronts

 

My 4x4 works fine, even though the gearing has been changed in the rear from stock 13/38 to '95 specs 11/38. The tires are stock 23 in front and 22 in rear. If you do the math, the 11/38 with 22 tires turns faster than the 11/22,12/22 with 23 tires. It just seems wierd. If you set it up so the fronts were turning faster, it would steer better in 4 wheel drive.

 

No body had monkeyed with this? Comon fella's....help me out. Does this 4x4 system really only engage if the back wheels slip? In order for that to work there would have to be a speed sensor on the rear drive somewhere and one on the front drive somewhere. I think it appears that way because they are set up to drive the rear wheels faster. My machine is a 96 with 95 gearing. Using cir=pi*r*2 I get a cir of 69.12 for the rear tires and 72.26 for the fronts.

11/38 gearing in the rear = 20.01 inches of movement per shaft rev.
11/22 * 12/22 front gearing = 19.71 inches per rev.

 

Polaris uses a mechanical "ratchet" action to turn the front wheels. Mechanically the front and back wheels are connected (after you switch on the front hubs) to each other, and when the back wheels start to turn faster then the fronts, a one way clutch, kind of like a ratchet, turns the front tires.
This is a very simple and slightly vague description with none of the proper terminology, but its the best I can do.
Hope it helps.
As for the front wheels turning faster? That seams a little strange to me.