Another point about the torque and horsepower... in a semi the torque curve is such that the engine makes it's maximum torque at idle or slightly above idle. it also makes it's maximum horsepower about the same RPM as your normal driving speed. In a gas engine the maximum torque is usually somewhere above your normal driving RPM and maximum horsepower is at an RPM usually closer to the maximum the engine is rated for. Basically the truck engine always operates in it's power range while a gas engine you have to run it well over normal driving speeds to actually hit the power ratings.

I was looking for an animated simple explanation of how a semi works and its build! this was really helpful, thanks.

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Looking forward to your tractor channel. Brilliant content

Love these videos.

BRAKING...B R A K I N G.

Spelled braking wrong on the thumbnail, oy.

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I thought that compressed air kept the brakes off. I think the absence of compressed air applies the brakes.

How about the truck is the load is gravity free weight out. The contact to the ground is the truck only and wheels, the load is no weight . I'll say removing the weight first before flying. So that i can see , I can defy the load of the truck. The container is Anti gravity way to do it want this pay for my 50years in repair works.

Scania have a V8 engine