Trailer Brake / Brake Controller Question

bowler1 wrote:
So in response to a previous poster, I did check out the instructions for the Prodigy. It says that failure to lock up the trailer brakes generally indicates the need to have the trailer brakes checked.

I probably need to do that.

My logic is this: If you can't lock up the trailer brakes when manually applying the brake at 25mph, I would think that would not be a function of the trailer being heavier than the truck. In this instance the trailer is slowing down the truck and not the other way around. A trailer heavier than the truck should be able to slow the truck down I would think when the trailer brakes are applied in full and not the truck brakes.

I bought a new P3 brake controller. I think I will try that and see if that solves the problem, and if not then I need to look at getting my trailer brakes checked.

Matt

Here is a quote from the Prodigy P.3 manual.
In the middle of P.3 is says:
"Repeat Step (3) until power has been set to a point just below wheel
lock up or at a sufficient force as to achieve maximum braking power." (my bold)

Now a little later in the "Notes" on the bottom of P.6 it states:
"Not all trailer brakes will lock up due to various conditions. However, inability to lock up the brakes generally indicates the need
for an inspection to determine the cause."

As you can see, they admit that not all trailer brakes can be expected to lock up and this has been my experience also. My brakes have never been able to lock up on dry pavement in any trailer I have owned, despite being properly adjusted and a good working controller.

However, you are correct in thinking that you should get your brakes inspected to make sure you are getting the maximum braking power possible in your particular situation. I could very well be that the wiring in your trailer is of smaller size than optimum for maximum braking. It would not be the first time for that situation!:R
Barney