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Re: Re: Re: Re: Re: Suddenly disconnected trailer
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Posted by Deas Plant. on April 02, 2003 at 11:19:08 from (202.138.16.123):
In Reply to: Re: Re: Re: Re: Suddenly disconnected trailer posted by T_Bone on April 01, 2003 at 18:46:47:
Hi, T-bone.
Have you had anything to with the Bartlett ball towing hitch. It's a 'ball' of around five inches diameter with a 3/4"UNC threaded hole in the top that goes where your pintle hook would normally go on the truck and a cup with a hole about 1 1/2 inches diameter in the top where the ring of the pintle hook hitch would normally go on the trailer. When the cup is fitted over the ball, there is a retainer bolt with a large, heavy, cupped washer that screws down through the cup into the ball to hold it all in place. They are only recommended for 2 1/2 ton download on the hitch but are rated to pull up to, I think, 20 tons total trailer and load. The man I work for had one on a Scania tandem drive tipper pulling a tandem axle trailer moving 12 ton track loaders around. I never drove it but everybody who did reckoned it was a mongrel of a thing when loaded because the download on the hitch would make the truck bounce a lot at the front. I could never understand why they didn't put a couple of tons of dirt in the front of the tipper to counteract it but they never did. It was probably around the same level of ease - or difficulty - as a pintle hook to hitch or un-hitch, not as easy as a turntable semi-trailer. The boss has never said he had any trouble with the hitch coming undone but did say he had to replace the retainer bolt every couple of years as the threads wore a bit. That rig was on the road 5 1/2 days a week moving a fleet of eight track loaders. He has sold it now and has a normal prime mover-lowboy combination as he started buying heavier machines that he said would have been beyond the Bartlett ball's rated capacity. That one is the only one I have seen close-up and I wondered if you or anybody else had any experience of them. You have a wonderful day. Best wishes. Deas Plant.
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