Thans Joe,
I was hopping you would say what you did. I am going to try to get an
electrical operated proportional air valve. I can then integrate these with a
standard electric brake control, which has a hydraulic actuator to sync it to
the standard brake system.
Bruce
Joe Garrett wrote:
> Bruce,
>
> The brakes on M series trailers work exactly like and with the brakes on the
> towing truck. The only reason they have a separate brake master cylinder is
> to isolate the brake hydraulics for safety and to make hitch-up simple (in
> my opinion).
>
> When you apply the brake pedal in the truck, air pressure is variably
> applied to the hydraulics in both the truck and the trailer. The air
> pressure is maintained in the truck at a minimum of 90 psi. and usually
> max's at 120 psi.
>
> If you want to control the brakes on your trailer from your truck you are
> going to need to manufacture an air brake valve that is functionally the
> same as those used in true airbrake systems. When this vavle is opened, it
> will apply variable pressure to the trailer brakes through airhoses. The
> concept is fairly simple, but it will be completely custom. The good news
> is that you don't have spring brakes, so you don't need 90 psi just to
> release the parking brakes.
>
> Good luck! Let us know how this works out. It is going to be functionally
> similar to electric trailer brakes with a separate controller on the
> steering column.
>
> Joe Garrett
> cell 425-344-1402
>
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This archive was generated by hypermail 2b29 : Thu Jul 05 2001 - 00:40:37 PDT