Most of these trailers were Fruehauf and built just the same as ours, landing legs, king pin position, running gear (apart from the sliding system), brake set up, only the Yanks still prefered the Palm Coupling connections we abandoned in the Sixties.
hi,years ago trailer rental company rentco imported a lot of trailers from the us, i think they were made by strick, they had trilex wheels fitted, at united carriers we had a lot of them on hire, they were a lot more sturdy than the york frieghtmaster trailers.was rentco an american company? cheers diesel 
bigr250:
Wheel Nut:
FarnboroughBoy11:
Probably are stupid question but are the king pins the same as are trailers or would they need a 5th wheel mod to pull them with our units?2’’ pins all over the world, unless they are Heavy Haulage
Spot on, they also have some VERRRRRRRRY long box vans, & I’m not talking 53 feet, they’re more like 65-70ft long.
Ross.
Maximum is 53’. And many states have a requirement of a 41’ bridge from kingpin to centre of the bogie.
Flats often have a pin set 19" from the front. You can see the front of the 5th wheel sticking out.
bobthedog:
bigr250:
Wheel Nut:
FarnboroughBoy11:
Probably are stupid question but are the king pins the same as are trailers or would they need a 5th wheel mod to pull them with our units?2’’ pins all over the world, unless they are Heavy Haulage
Spot on, they also have some VERRRRRRRRY long box vans, & I’m not talking 53 feet, they’re more like 65-70ft long.
Ross.
Maximum is 53’. And many states have a requirement of a 41’ bridge from kingpin to centre of the bogie.
Flats often have a pin set 19" from the front. You can see the front of the 5th wheel sticking out.
I have seen these very long step frame box vans recently, usually between Liverpool and north wales; now there was a piece on the local news a few months ago about BAe Broughton making some wing sections for Boeing for the 787 Dreamliner, I might guess that they re something to do with that. There is way they are 53’, 70’ is nearer the mark, with, unusually for American gear, wide spread tandem axles set well forwards on the chassis.
I think the 3 spread axle trailer you saw is the one for carrying the huge slab of aluminium the mill the wing out of. Saw it on one of these ‘building the biggest/bestest’ program’s.