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Ford's double-layered frames vs the competition

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Old Sep 27, 2018 | 01:10 PM
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Ford's double-layered frames vs the competition

Hello there,

i would like to know how double layered frame compare under harsh working conditions over a longer period of time to frames made of a single piece of metal. I know all US class 5 trucks have their frames welded together front and rear (with the front beeing closed and the rear open) but only Ford doubles their frame for the highest payloads, while Dodge is simply using a bigger profile to begin with as far as i know.

In Australia Hino.Isuzu and Mitshibishi are all using just one single piece open c from front to rear and that's it, but i guess no one ever had the opprtunity to compare those to us-trucks of similiar weight range?

Greetings
 
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Old Sep 27, 2018 | 01:31 PM
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Semi trucks use layered frames. It's a non issue. I've never seen a layered frame fail. Dodge 5500 trucks have stiffeners welded on the frame also creating layered regions.
 
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Old Sep 27, 2018 | 06:28 PM
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Nissan has been using a box frame since 2004.

I was driving beside an earlier model Superduty and the flexing between the cab and bed was astounding. I don't think my 2017 would do that.
 
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Old Sep 27, 2018 | 06:58 PM
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I personally know several people who have had older trucks with the bed actually flexing to the point where it hit the cab. My personal last SD KR 4x4 was a 2007 that bent the a pillar to the point where the grab handle was bent closer to a "u". The fender on the driver side was pulled up almost .5 inch more than the passenger side above the bumper. Funny thing was it took place on areas where I had been driving trucks for 25 years most 2wd's!

Hope these are tougher or rather engineered better.
 
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Old Sep 27, 2018 | 07:00 PM
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Big improvement over previous generation Super Duty.
 
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Old Sep 28, 2018 | 02:11 AM
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Well up to f-350 its all boxed now, but the F-550 still uses open c in the rear (with layers still or not?) but i guess its stiffer then before too
 
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