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  1. Autocar

    Fabricating loading ramps for m871 trailer and halftrack

    One more I forgot.
  2. Autocar

    Fabricating loading ramps for m871 trailer and halftrack

    Thanks. No idea on load capacity, but most backhoes are carried on 10 ton trailers minimum so I would guess the capacity is 10 tons. My track weighs 15,000# and the ramp doesn't budge. I forgot to put the supprt legs down one time and during unloading the trailer bounced up and down like an...
  3. Autocar

    Fabricating loading ramps for m871 trailer and halftrack

    This ramp was a commercially available unit that was invented and first made in the San Francisco Bay Area during the early 1970s. I couldn't find any data plate or info on it, but I did a patent search on it and found it but the company listed in the patent wasn't around any longer. They are...
  4. Autocar

    Fabricating loading ramps for m871 trailer and halftrack

    The length of the beaver tail is about 7 feet and the ramps are 5 feet with the short link ramps being about 1 foot. The height varies depending on which tractor I use. From the ground to the top of the deck at the rear where the short link ramps attach if I remember correctly is about 28" with...
  5. Autocar

    Fabricating loading ramps for m871 trailer and halftrack

    I was concerned about the halftrack being higher than it would be on a low boy, but the trailer handles fine. There is no swaying on curves and it seems very stable. The total height is 11'3" so the height and center of gravity is actually less than most standard loaded box trailers. Loading...
  6. Autocar

    Fabricating loading ramps for m871 trailer and halftrack

    I added a wooden liner to the chain box to hold the chains and the load binders along with a shelf with plastic bins to hold tie downs, gloves, coveralls, rags, etc. I also added brackets to hold my scooter on the ramp deck. With the ramp deck being so far back from the rear trailer axles, the...
  7. Autocar

    Fabricating loading ramps for m871 trailer and halftrack

    To hold the halftrack down, I made D ring brackets. These were cut out of 5/8 steel plate and the D rings were welded to the brackets. The brackets are bolted to the trailer using 1 1/2" dia. bolts. Whats nice is that every few feet on the trailer rails, there are reinforced pads with 1 5/8"...
  8. Autocar

    Fabricating loading ramps for m871 trailer and halftrack

    These are photos of the finished attached ramp. There is a good view showing how the pins slip into the hooks. To prevent the ramp from bouncing out of the hooks when going down the road, two large bolts were added to prevent vertical movement of the ramp. It also adds extra support for the...
  9. Autocar

    Fabricating loading ramps for m871 trailer and halftrack

    Here is the ramp being attached to the trailer for the first time after all the fab work was completed. The ramp is tilted up slightly at the back and then the pins are dropped over the hooks on the trailer. The ramp is lowered down and the arms swing forward until they touch the pads on the...
  10. Autocar

    Fabricating loading ramps for m871 trailer and halftrack

    These are pictures of the ramp being dry fitted to the trailer.
  11. Autocar

    Fabricating loading ramps for m871 trailer and halftrack

    The ramp is held onto the trailer with (4) hook brackets. I designed the brackets after dry fitting the ramp to the trailer and taking measurements. I had the hooks CNC machined from 3/4 plate and tack welded them in place. Afterwards I dry fit the ramp again to make sure the hooks were...
  12. Autocar

    Fabricating loading ramps for m871 trailer and halftrack

    The ramp was pretty banged up so I ended doing a whole lot of tweaking and repairing. Finally got everything straight and patched up. It has swing down arms at the rear to take up the load during loading. After priming the repairs, I power washed it and painted the front section where it bolted...
  13. Autocar

    Fabricating loading ramps for m871 trailer and halftrack

    I found a detachable dump truck ramp on CL. It hooks onto the back of a dump truck box and allows a backhoe to climb into the box and therefore a trailer is not needed. I added this ramp to my M871 22 1/2 ton 30 foot long flatbed/stakebed trailer and make it detachable also. I cut the wiring...
  14. Autocar

    Fabricating loading ramps for m871 trailer and halftrack

    I needed to haul my halftrack around so I came up with ramps for the M871 Semi-trailer. There seemed to be some interest in info I posted about the trailer and I took some photos during the fab process so I thought I would post them. Here is the finished product.
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