11-14-2016, 03:46 PM
Jake Wrote:Slight correction about the trailer brake, too - it's not really an "emergency" brake, it's just not electric. UHaul trailers have a spring that, when you brake, compresses and activates hydraulic brakes on the trailer wheels. Just so you don't think #MightyMightyDuramax was stopping the entire load unassisted - it's definitely working harder than it would with electric trailer brakes, but it's got some help.
Assuming the UHaul trailer has working brakes in the first place. Which... is anyone's guess.
I asked UHaul and the manager and he said no there is no trailer brake. If the trailer somehow got loose from the hitch the chains would pull on the emergency brakes as they are attached to a spring which he pointed to me. I was like oh that makes sense. During a stop there is nothing tugging on those chains when connected to the hitch. There is no way it's braking itself.
Edit:
Emergency brake chain
Trailers with brakes have a third chain, called the emergency brake chain (E). This chain applies the brakes automatically in the unlikely event of a separation of the trailer from the tow vehicle. Attach this chain as close to the vehicle center as possible; to the tow vehicle permanent hitch, frame or structure, or to the bumper brackets. Twist chain to take up most of the slack and secure “S”-hook with rubber retainer. Some slack is necessary to prevent the emergency brake from activating on turns or inclined driveways.
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