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5 answers

So that when you are four wheeling there is room for twisting motion, especially with a camper loaded on the bed. Also allows for comfort when driving, that is you don't feel all the bumps in the road. That's my guess anyway.

2007-06-23 15:23:26 · answer #1 · answered by dealerschool2006 3 · 1 0

If you are asking about body plus frame, it's been the traditional way of making wagons (1800's), and when people started making cars - they did not have modern CAD programs with finite element design capabilities to figure out how strong the body had to be to carry a load. It was simpler to make a frame that could support anything, then drop a body onto the frame.

Today, trucks often have specific bodies made for the back of the truck - witness pickup trucks turned into ambulances, tow trucks, dump trucks, etc. So the body / frame still applies - make the frame strong enough, attach a cab, and then let the body maker fit whatever they want. You can buy a pickup without the pickup box - it's called a body and frame purchase.

Another reason is that if you have damage, you can repair the frame and body separately. In a uni-body vehicle, if there is sufficient damage - that's it - the whole thing has to be scrapped.

2007-06-23 23:19:24 · answer #2 · answered by Mountain Top 4 · 0 1

Please be more specific trucks are made of thousands of parts. Describe where these two parts are so we can explain.

I think you may be referring to the cab and the box in the back if it's a pick up. Tractor trailers are made in two parts so that the front part or Tractor can disconnect it's trailer hitch to another trailer and get on the road again with a load to another destination.They are made in two parts for ease of turning corners and more importantly backing into tight spaces.A driver could do neither if the whole long truck were made in one part.

2007-06-23 22:36:55 · answer #3 · answered by Country Boy 7 · 0 0

they make trucks with a bunch of parts...lol but if the question is "why is the bed seperate from the cab?" it's for several reasons, first for flexability to allow for the frame to twist as it's going over uneven terrain. Second is for adaptability for example, taking the fleetside off and making a flat bed for it...or utility bed. what ever you want the truck to be used for.

2007-06-23 22:26:33 · answer #4 · answered by jim h 2 · 1 0

well the bed and cab is separated because alot of times truck bed get damaged from being used like a truck. but both the bed and cab are sitting on the same body frame so really it dont make a big difference.

2007-06-23 22:22:05 · answer #5 · answered by jeff 2 · 0 1

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