Have just started transporting my 12" GSO in a trailer. I just put the tube unit into two styrofoam supports that were probably part of the original packing. They sat on a piece of carpet I have always had directly on the trailer floor. Threw a blanket over it, a plastic sheet and tied it down, together with the base, my gas lift chair, a few other plastic chairs and some half bricks(!!) with cargo net and rope. Tyre pressures 28psi. Bounced along, last night, at 90-100 kph for an hour and fifteen to my observing site, including some very sharp speed humps at the end. Set it up and checked the collimation - just needed a tweak. I expected the secondary to have worked loose, but no.
However, I think I'll add a middle support to the tube and a little more "cushioning" under the styrofoam. Next is to make a rigid, weatherproof and, hopefully, secure lid for the trailer. It has an original lid, but even the OTA is too big, let along the base which does not fit anywhere in my car.
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