John Brewer helpfully wrote: "Self loading trailers are used extensivly in Australia.
The Lifting arms ar on hydrolic rams and can be adjusted to suit 20 & 40 foot containers, and can postion a 20 footer to correctly position the weight distribution on the trailer" When I was working in rural Africa, such luxuries were unheard of, but we managed to unload some fair sized loads with improvised, cheap but effective means. One of the better systems was to erect two guyed goalpost frames from stout wood poles. Chain block hoists were lashed to the middle of each crossbar. The delivery truck would drive under the gantry, the load was raised, and the truck would back out or drive through. The load could then be lowered onto skids on the ground and be winched (Tirfor etc.) to its desired location. Of course, the goalpost gantry has to be proof loaded first with dummy loads like plywood boxes filled with sand (easy to create and dismantle with hand tools only). I reckon this approach is still appropriate to places like Philippines, Marc. David Teal Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
