American Heavy Haul trucks

[ame]http://www.youtube.com/watch?v=O0663asT5xY&feature=fvwp&NR=1[/ame]

can anyone tell me what kind of trucks are those.looks like they have very strong driveline

looks like each truck pulls about 350-410ton

(861ton of load 72 lines of trailer 4 are 13.5t so this is 243t) each truck is probably 30-40t and maybe 200-300-400ton that thing which hold load )

 

thanks for explanation

how much largest can pull?

here limit is 1100 000lbs or 500 metric ton

what kind of engines they have is there anything above 600hp

and what kind of gearboxes they have allison automatics or manual ?

what kind of clutch is it wet or dry clutch

i find out that italian IVECOs brand ASTRA/SIVI made trucks for 275ton with eaton dry clutch build from metal-ceramics

 

we consider that planetary hub reduction axles are necessary above 100t

or for lower weight if truck work harder (mud on construction sites )and if it cover only shorter distances

but here almost every 6x4 truck is with hub reduction axles

mercedes dont offer truck without them

why 4frame rails? that brings unnecessary weight and frame begin to rigid which in this case reduce its flexibility and result larger tire consumption

here man and mercedes are single chassis frame 9.5mm scania and volvo double which most people consider as too much

however mercedes man need some reinforcements on frame behind 5th wheel which come from factory where they weld steel plate 1.5ft long

thick 10mm

 

does your heavy haulage trucks come original from factory or they are build like glider

or maybe that they come from factory as serial trucks and later someone exchange their components and put other


in europe

MAN is only serial truck heavy haulage segment ex factory and it is best sale

mercedes use uncompleted tipper chassis send them to company titan who put gearbox wet clutch additional axles 5th wheel upgrade cooling .......

iveco do same with its company SIVI/astra but they come completed ex factory

renault dont have heavy haul trucks some are modified by finish company sisu but this is rare

daf dont have any serious heavy haulage trucks but its company ginaf can provide some

volvo was not so strong in heavy haulage transport

but they recently introduce fh16 600 (612hp) with allison automatic 4700 rated for 295t

scania is not strong in this segment but exist

its company Laxa (http://www.laxasv.se/ ) modified serial trucks to comply needs they put additional axle

put 5th wheel

front and rear drawbar trailer coupling

remove original gearbox and put other with wet clutch

put cooling for gearbox oil

additional air compressor

hydraulics......


here is one example of this














reinforcement for coupling



modifying rear chassis end from tractor adapted to drawbar


extending frame

it now looks like this








here you can see on left cooler for gearbox oil, air barrels batteries , 2xfuel tanks hydraulic tank , additional air compressor




spec about truck

Scania R 620 LA 8x4/4 HNB for 250t(550 000lbs)

engine 16-Liter V8 Euro 4 456 kW (620 HP),
3.000 Nm (2215lbft)

gearbox is zf tc-tronic 12speed automated with wsk 440 wet clutch with primary retarder

all air suspension two steer axles one liftable 2drive

truck itself is not very strong it is 42t (92600lbs)










maybe largest reason why scania is so rare is its price

this one below cost 240 000€ without tax it does not have any equipment 620hp euro4 engine manual 16speed gearbox , it have low cab not any significant equipment ........and rear steel suspension air only on both front axles

for 220 000€ you can get 680hp man with largest cab automated gearbox lot of equipment like leather seats and more i think mercedes is even cheaper

 

i know i was looking at their homepage they put information that they use w900

western star 4964sx and mack rd882

http://www.mammoet.com/Documents/PDF/Mammoet%20Equipment/Transport/Prime%20Movers.pdf

does anyone of you ever see their mercedes actros 8x8 as heavy haulers few of them operate in US and canada