Re: ELECTRIC BRAKES

Posted by Bruce Lahmayer on September 10, 2002 at 10:46:12 from (204.69.145.61):

In Reply to: ELECTRIC BRAKES posted by CAPT KIRK on September 09, 2002 at 18:35:21:

The older brake controllers did at least sense how hard you were pressing on the brake pedal because they tapped directly into the brake line just past the master cylinder. The newer electronic controllers aren't allowed to hook in that way because of the liability from possibly effecting the performance of ABS systems. Most of the newer electronic units do not have any way of knowing how hard the brakes are being used until the tow vehicle reacts to its own brakes and deceleration forces move a pendulum type device in the controller. The adjustment of the controller is important as well as proper grounding of the trailer to the truck. There is one brand of electronic controller that does take into account the position of the brake pedal. Sorry I can't remember the brand but I'll research it and post it again later. That is the type I am going to switch to. With a heavy load, the truck brakes can't produce as much decelleration which in turn results in less activation of the electric brakes. Does that make sense? I think there are some real problems with electric brake effectiveness because of this and I am surprised something better hasn't been done to improve the performance.

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