Originally posted by StephenH
Originally posted by Happy Tripping
...chocks made from 2X4s, a roughly 20 inch long crossbar with 10 inch lengths at each end splayed out.
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A ... more thorough description would help.
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I'll try - The shape is a 'V' with a crossbar, the tire resting between the arms of the 'V'. The degree of 'splaying out' of the short lengths is predicated on the width of your tire, immediately adjacent to the leading edge of the 2X4 crossbar. Too short and it pinches the tire, too wide and its unnecessarily wide. The crossbar is raised above floor level on the short lengths of 2X4 and is the part that actually blocks the tire.
Now that I think about it, pointing the open end of the 'V' AWAY from the tire might, from an engineering standpoint, actually be more effective. I'm not an engineer. The person who originally described it said that it was used without problems on parked private airplanes in winds, my version works and is certainly inexpensive, but it is both bulky and heavy, so now I just use the orange things.