I'm asking because I have two boat trailers with surge brakes, and they are working completely differently.
My existing boat's trailer is a single axle with the typical surge brake actuator on the tongue. When the trailer is uncoupled (i.e. sitting by itself, not hitched to a towing vehicle) I can move it around manually with little effort.
My new boat's trailer is a double axle with brakes on one axle and the same kind of tongue-based actuator. When it is uncoupled, I cannot move the trailer at all. If I really, REALLY force the tongue to one side or the other, you can actually see the stress build up in the tires and axles - the front and rear wheels on the same side of the trailer twist and flex trying to prevent the trailer from moving. Yet when I hook it up to a towing vehicle, it moves just fine.
I have made certain the emergency cable isn't pulled. I have made certain the coupler is fully forward, as if being towed. I have pressed the little release button underneath the coupler. I have even tried leaving the cable connected to my truck and shifting into reverse (so the backup lights come on and therefore provide power to the backup solenoid in the coupler). Nothing will make those wheels turn. Yet connect it to the truck and it pulls around just fine.
I'm baffled.
My existing boat's trailer is a single axle with the typical surge brake actuator on the tongue. When the trailer is uncoupled (i.e. sitting by itself, not hitched to a towing vehicle) I can move it around manually with little effort.
My new boat's trailer is a double axle with brakes on one axle and the same kind of tongue-based actuator. When it is uncoupled, I cannot move the trailer at all. If I really, REALLY force the tongue to one side or the other, you can actually see the stress build up in the tires and axles - the front and rear wheels on the same side of the trailer twist and flex trying to prevent the trailer from moving. Yet when I hook it up to a towing vehicle, it moves just fine.
I have made certain the emergency cable isn't pulled. I have made certain the coupler is fully forward, as if being towed. I have pressed the little release button underneath the coupler. I have even tried leaving the cable connected to my truck and shifting into reverse (so the backup lights come on and therefore provide power to the backup solenoid in the coupler). Nothing will make those wheels turn. Yet connect it to the truck and it pulls around just fine.
I'm baffled.
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