sidsel.svein(at)oslo.onli
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 Posted: Mon Feb 07, 2011 3:04 am Post subject: SV: trailer tie downs |
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Interesting topic!
There is no one ”right” solution here, and I have no desire to defend my main wheel clamps solution. I will, however, add a few more thoughts:
Many tie-down solutions are OK for normal towing on a good or decent road. But what happens if the trailer have a hard bounce, or even worse – what happens if the trailer runs off the side of the road, or comes to an abrupt stop because you have a collision, or somebody hits the trailer from behind and jerks it forward? Will hard bumps/sudden stops introduce shock loads onto the tie-down or the fixing points on the aircraft, and will the arrangement hold the aircraft in place at odd angles?
I shall not be judge of which arrangement is best, only point to the following regarding the main wheel clamps:
<![if !supportLists]>- <![endif]>The tie-downs are spread to the widest possible separation from the centerline, i.e. best possible “capsizing” stability.
<![if !supportLists]>- <![endif]>The inflated main wheels transfer the tie-down loads, i.e. reduces shock loads.
Regardless of arrangement, the tie-downs must be very well anchored to the trailer – not only to the trailer deck of plywood or aluminum sheet, but to the carrying structure of the trailer.
Regards,
Svein
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