redlineshooter_1 wrote:in double b configs it is common to see 3-4 trailer combination in fuel tanker
Not really. Most, if not all MC trucks are b-doubles only in terms of fuel tankers so they can deliver fuel to metro locations.
It's only in the interior (NT, WA) where the big trucks roll. BP and Shell own that market.
redlineshooter_1 wrote:in double b; it's 2 xx b's and standard trailer, whilst you could pull upo 5- b's in a row I would suspect you would need a power unit past the 3rd trailer
They call those B-double, B-triple, AB-triple, BAB-quad, BABB-quin
All of the above are pulled by "standard" (ie. 500+hp bogey-drive) trucks, except for the quads which have tri-drive axle sets on the prime mover. The Mack titan II is one such beast.
redlineshooter_1 wrote:in Australia they do confine 2 trailer limits within the city limits due to length, outside city limits in staging area they can connect up another 1-2 trailers..
B-triples and above are not permitted east of the Dubbo hub (in NSW) because the Pacific Hway is load-limited to 86tons. This is a contributing factor to 90% of line-hauling b-doubles on the eastern seaboard are not fully loaded.
but in Victoria, Ford Australia used to have a B-triple tautliner that serviced regional areas straight out of Broadmeadows!
Most MC combinations of 4 trailers or more are RingFeder hitch (ie. not fifth wheel and trailer pin).
Most - I'd say 80% - trucks along the eastern coast of Australia are b-doubles and of those types of trucks I would say 7 out of 10 are Kenworth.