Part 2: Assembly of Sub-Frame and Test Fit

20100924-25

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The Trip

We made good progress in the first 3 days of our effort.  As our comfort level with the specific actions improved, the rate of progress increased.  During the next 2 days, the sub-frame members were fabricated and a test fitting of the camper on the truck frame was achieved.  All of the photos below were shot with my little Lumix camera which is 4 years old, so the photo quality is somewhat lacking on some of the shots.

The Photos

The photos below are what we saw.

The fixed cross member was the first beam constructed.  We used 2 x 6 x 1/4" steel tubing for the frame.  A chunk of 6x6 was cut up to create the mounting bracket.  We elected to use the stock frame mounting bracket for connection to the truck frame.  But, to do so, we had to trim the original bracket to make it clear some rivets in the frame and we had to move it rearward several inches.

An end view of the mounting bracket. 

The bolt, castle nut and spring washers were from the stock installation. A new hole will have to be drilled through the frame member to allow full attachment of the bracket to the frame in the new location.

Above is the rear mounting beam.  This beam has cut-outs to provide clearance for the plumbing underneath the cabin. Sorry about the high-ISO speckle in the photo, but the flash did not fire. 

Rob salvaged a mounting assembly from a radio box that he had sitting around.  The assembly was the donor for the rubber grommet mounting eyes.

The mounting eyes were cut from the existing frame using a plasma torch and then ground to provide a clean, smooth surface for welding.  An appropriate-sized recess was then cut into the mounting beam and the eye was welded to it.  The welding was done in slowly in small increments to insure that the rubber grommet was not melted due to the high heat generated by the welding process.

The tire frame rack mounts were welded to the cross member.  The final, full "sew-up" of all the welds will happen later.

The rear cross member of the sub-frame was positioned under the camper for a test fit.  There were some straps that supported the gray water tank that had to be cut and repositioned for the frame member to fit correctly.

All the junk under the trailer was removed in anticipation of driving the 1017 under the trailer.  Note the clamps holding the rear frame member in place at the far right of the photo above.

Two fork lifts were required to lift the trailer.  The plan was to get the lifts under the center of gravity of the trailer, pick it up, and then drive the 1017 under it in the correct location.  Then, using the side shift feature of the fork lifts, the trailer would be set down on the 1017 frame in the correct location for the test fit.  Due to the tight space, positioning the first lift was a bit challenging, but the short wheelbase won in the end.  Note the U500 (for sale) in the background.

Rob positions the second fork lift into place.

We have lift-off.

Driving very slowly, with much spotting, I backed the 1017 under the suspended trailer.

We slowly lowered the trailer onto the 1017 frame.

We had a small "situation" with the forks on the passenger side.  In the end, we put some blocks on top of the cross frame and lowered the trailer onto them.  Then, the forks were repositioned, the trailer was raised and the blocks removed.

The full weight of the trailer is on the 1017 frame.  Because we disconnected the electrical setup for the hydraulics, we were unable to lower the top before picking up the trailer.  But, in the end it did not matter; the weight distribution of the trailer was favorable and it was not an issue.  The trailer sits quite high on the truck; note the height of the trailer relative to Kathleen (who is about 5'8").  Also note that the trailer is not sufficiently heavy to cause the frame of the 1017 to sit level. 

A photo taken from the tailgate of the 1300 shows a different view of the setup.

While it is a poor photo due to insufficient light and a weak flash, the photo above does show the height of the camper when the top is raised.  Our measurements suggest that the top is about 13.5' when raised.  The camper does not appear to be sitting plumb, but that is an artifact of the angle of the photograph.

A rear view of the pivot position with the scrap mount in place for example.  The mount will we re-fabricated with thicker material and then welded to the cross member.

I was very pleased with the progress that has been achieved so far.  The test fitting went well and no issues were uncovered, which is somewhat remarkable.  We will be on break for the balance of Saturday and Sunday and will start work again on Monday morning.
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Photos and Text Copyright Bill Caid 2010, all rights reserved.
For your enjoyment only, not for commercial use.