Well from experience, they actually don't unlock, because you have natural windup between front and rear diffs, this force keeps them engaged, the odd accassion you might be lucky, but most of the time no way, the design is all good in theory but not in practice.
Why should the tires be slightly smaller?
Wow!! I love that trailer! I want one.
I have always wondered about fitting hydraulic motors to a trailer, and drive them from a pump on the tow vehicle, can anyone tell me if it's possible? I'm no hydraulics expert.
Why should the tires be slightly smaller?