Low, There has to be more to the story, and I think that's what Tyler is referring to. For example, why does the BLM Locker Bypass lock the front instantly every time, while the factory setting often has delays before the front lockers will actually engage.
The front gives people so much “trouble” because the rear has to lock first. Once the rear is locked, two tires have to slip in order to turn, and turning is generally how people are trying to get differential action to the locker. On a high traction surface with the rear locked, it’s difficult and places a lot of strain on the drive train to achieve differential action in the front diff under 3 mph.
With the right (low/variable from left-to-right) traction conditions, the front locks just fine under the factory constraints.
On slick snow/ice, mud, or uneven ground that will almost entirely unweight a tire, my front locks as expected, every time. I don’t use it on dry flat ground, and if I did I wouldn’t expect it to lock up right away.
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