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I'd like to see this fit around the M50

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What I want to know is, what kind of a clutch is in those giant trucks? How do you get that lot moving from standing?

 

If you look at Broithe's picture behind the cab you will see what looks like a large black box with a radiator and exhaust that is part of the torque converter the trucks fuel tanks are also up there as well behind the cab.

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If you look at Broithe's picture behind the cab you will see what looks like a large black box with a radiator and exhaust that is part of the torque converter the trucks fuel tanks are also up there as well behind the cab.

 

The last of the big Scammells had torque-converters, for sure - http://www.commercialmotor.com/big-lorry-blog/the-last-scammell-heavy-haulag - difficult to see another practical way, short of a full hydraulic drive, and that can have speed implications.

 

There are often also tanks aboard simply for ballast, to to increase the downforce for improving traction from the driving wheels.

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There is a tendency to try to keep abnormal loads off the motorways over here for many reasons - high-speed traffic, congestion, a lot of over-bridges, etc - and also to stay out of built up areas, there's too many overhead lines, etc. It would take a while to get a load out of town at the beginning of a journey and southbound ones would often spend the first night on the way from Stafford in this lay-by - https://maps.google.co.uk/maps?q=stafford&ie=UTF8&hq=&hnear=Stafford,+United+Kingdom&gl=uk&ll=52.753808,-2.106698&spn=0.001378,0.002411&t=h&z=19&vpsrc=6 - some years ago, a 200 tonne transformer was being taken south and overnighted here. At some point in the night one or two axles failed and this cascaded into the entire side of the trailer collapsing. The transformer then slid off and fell over - luckily, it fell into the field, rather than into the roadway. It took many weeks to retrieve it and fix the remains of the trailer.

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