From: James M. Atkinson (jmatk@tscm.com)
Date: Sat Feb 14 2004 - 07:23:40 PST
I have built several trailers to pull behind 5 tonners where I've taken a
scrap duece, cut off the cab, and cut the frame short just in front of the
cab, added a heavy duty dolly, a pintle, and built a tongue. I had to get
creative with the brakes and ended up converting them by keeping the air
tanks (from the original duece) and going to pure air brakes on the trailer.
-jma
At 11:31 PM 2/13/2004, GOTaM35 wrote:
>Safety, Safety, Safety.
>
>Safety is foremost on my mind when moving heavy stuff although I usually
>throw it to the wind and drive slow. I have a question or two and a few
>thoughts to go with them.
>
>First off, the only way I am going to move a disabled deuce is with my 9 ton
>air brake trailer. Emergencies MAY be exceptions, but probably not. Of
>course I realize not all of us have access to heavy equipment. But you
>can't beat a trailer with air brakes. Having said that, I have tried to tow
>one deuce with another and it didn't work well. Not because of brakes but
>because of steering. I just don't think you can pull a deuce safely behind
>another at top speed. Top speed is what you need to travel to drive on the
>interstate. At 55 your still very slow when the traffic around you is going
>80.
>
>So that brings me to brakes. Brakes is what lets you feel comfortable at
>speed, because you can change your speed quickly. So here is the though
>that must be wrong because it seems so obvious to me some one has had to
>think of it and it didn't work. In case that assumption is wrong, here we
>go.
>
>Why can't you install a air over hydraulic booster on the deuce like you
>have on a m105 and have a shut off valve between it and the main brake
>system. Have a similar valve, rated at working brake pressure located at
>the outlet of the brake booster. When driving this valve is open and the
>one on the trailer like booster is closed. When being towed the main valve
>is closed and the trailer like booster is opened. The trailer part will
>pressurize the system when air is applied by the tow vehicle. Of course a
>m105 booster is too small to pressurize all 6 wheel cylinders, but you could
>brake just one or have a bigger booster. I bid (and lost) on a trailer last
>week that had two axles and air over hydraulic, so bigger valves must be out
>there. The valve at the back of the main truck booster would keep the brake
>fluid from pushing into the master cylinder.
>
>Again I suggest every body use a trailer with good brakes. I was thinking
>of making a tow dolly from a large shelter dolly I have. I abandoned the
>idea when I realized it couldn't be as safe as the trailer. A nice cheap
>truck won't do any body any good if you or your vehicle don't make it home.
>
>Have a safe Presidents day,
>Joe Trapp
>
>
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