Many years ago I looked at an aluminum body motorcycle trailer. It was
at a run or a show. I don't recall exactly. There was a top hinged
door that used no bolt/weld/rivet on hinge. One of the panels of the
trailer had a roll or tube rolled into one edge of the panel, and the
door had a similar roll on one edge. Then they just slid together. I
didn't care about the trailer one way or another. (I had/have a couple
motorcycle trailers.) What I found interesting was the hinge mechanism.
In the open position you could just slide the two pieces apart and set
the door out of the way. In the closed position there was a latch that
kept things from moving.
Recently I have been working on a project where this sort of hinge might
be very handy, so I started looking up slip roll videos. The first
couple I've watched either spent more time with the operator commenting
like a salesperson than showing the actual operation of the machine, or
they showed basic ring roller type operation. Either making curves
tubes or cones.
Is that relatively tight 1(+/-) inch tube I recall not possible with a
slip roll after all. I can visualize a simpler machine with just two
rollers instead of three with one having a slot machined in it that
could make these parts, but I don't see it being done with a
conventional slip roll. Am I missing something or did I just stop
watching shop videos to soon?
- posted 1 month ago