indy4x4fab
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This is how I made my trailer brake contraler for my m105a2.
This was built after looking at how the m105a2 pulls empty with no air brakes, small load (1000 lb) in the bed of the trailer with no air brakes, as well as how it pulls empty with air brakes behind a deuce, and finally a small load (1000 lb) in the bed of the trailer with air brakes behind a deuce.
This not a something I recommend for standard pulling practices of a m105a2 with a single air line hook up.
This system does work quit well and is very effective if you have all the proper tools and items that are needed to make this system work together.
Items use for this system are a 110v generator, a 110v air compressor with built in air pressure regulator, a simple two pole on-off switch, and a three port 12v air valve (de-energizer is in the closed (no air comes out) trailer air line vent to the atmospheric; energized, charged the trailer brakes, atmospheric vent closed), 10 ft. of air hose with a glad hand on one end, and some 2-18 (about 10 ft. of wire) wire with a standard 12v car lighter male plug on one end.
We had the gen-set in the back diver side of the bed so we could drop the tail-gate start it as needed to recharge the air supply via running the air compressor, then we set the compressors regulator to 25 psi when empty and 35 psi with 2000lb of cargo in the bed of the m105. This wasn't enough air to lock the brakes up on the trailer but it was more then enough air to stop the trailer and its self, with out pushing the tail end of the truck around. We used a three port 12v air valve for the simple fact it could be wired to a standard 12v car lighter male plug on one end for power with out having to have the gen-set running the hole time to power the air valve.
This system was tested a couple of time in an empty parking lot first, before even taking the truck and trailer on to the road. The final test was when applied the brakes as we where coming in to a rest stop at night. The trailer brakes worked perfect they stopped the trailer and the truck with little or no effort at 35 psi. the tires never locked up but you could tell they where doing exactly what they where suppose to do.
I'll post pictures Sunday, and possibly a video, too.
I don't recommend that this is to be used by everyone. THIS IS NOT D.O.T. APPROVED, SO IF YOU USE THIS SET UP YOU DO SO AT THE RISK TO YOUR SELF, WITH LOCAL AND FEDERAL LAW ENFORCEMENT, AND D.O.T. INSPECTORS.
This was built after looking at how the m105a2 pulls empty with no air brakes, small load (1000 lb) in the bed of the trailer with no air brakes, as well as how it pulls empty with air brakes behind a deuce, and finally a small load (1000 lb) in the bed of the trailer with air brakes behind a deuce.
This not a something I recommend for standard pulling practices of a m105a2 with a single air line hook up.
This system does work quit well and is very effective if you have all the proper tools and items that are needed to make this system work together.
Items use for this system are a 110v generator, a 110v air compressor with built in air pressure regulator, a simple two pole on-off switch, and a three port 12v air valve (de-energizer is in the closed (no air comes out) trailer air line vent to the atmospheric; energized, charged the trailer brakes, atmospheric vent closed), 10 ft. of air hose with a glad hand on one end, and some 2-18 (about 10 ft. of wire) wire with a standard 12v car lighter male plug on one end.
We had the gen-set in the back diver side of the bed so we could drop the tail-gate start it as needed to recharge the air supply via running the air compressor, then we set the compressors regulator to 25 psi when empty and 35 psi with 2000lb of cargo in the bed of the m105. This wasn't enough air to lock the brakes up on the trailer but it was more then enough air to stop the trailer and its self, with out pushing the tail end of the truck around. We used a three port 12v air valve for the simple fact it could be wired to a standard 12v car lighter male plug on one end for power with out having to have the gen-set running the hole time to power the air valve.
This system was tested a couple of time in an empty parking lot first, before even taking the truck and trailer on to the road. The final test was when applied the brakes as we where coming in to a rest stop at night. The trailer brakes worked perfect they stopped the trailer and the truck with little or no effort at 35 psi. the tires never locked up but you could tell they where doing exactly what they where suppose to do.
I'll post pictures Sunday, and possibly a video, too.
I don't recommend that this is to be used by everyone. THIS IS NOT D.O.T. APPROVED, SO IF YOU USE THIS SET UP YOU DO SO AT THE RISK TO YOUR SELF, WITH LOCAL AND FEDERAL LAW ENFORCEMENT, AND D.O.T. INSPECTORS.
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Oh, and besides the gen-set and air compressor where already going with use on the parts run, why not put them to good use on the trip there.