Transit unibody looks like body on frame - Ford Transit USA Forum
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post #1 of 7 (permalink) Old 08-13-2019, 07:38:AM Thread Starter
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Transit unibody looks like body on frame

Take a look at this.
Transit frame may be unibody but it has a ladder frame built into it.

http://www.boronextrication.com/2014...ody-structure/

Here is a really good video by an engineer explaining the difference and some misconceptions.

https://m.youtube.com/watch?v=IhbXPzPlzNI

Thoughts?
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post #2 of 7 (permalink) Old 08-13-2019, 09:58:AM
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That is the cab chassis and cut away. It IS body on frame as the body comes later in many different shapes and sizes.
Its not the same as the van frame.

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post #3 of 7 (permalink) Old 08-13-2019, 10:35:AM Thread Starter
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I checked under my wagon. Same thing. Two main beams extending all the way down with cross (ladders) bars.

That website calls it unibody as well. Someone else can correct me but I believe that the cutaway is unibody too.

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post #4 of 7 (permalink) Old 08-13-2019, 12:47:PM
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Quote:
Originally Posted by jdybvik View Post
Take a look at this.
Transit frame may be unibody but it has a ladder frame built into it.

http://www.boronextrication.com/2014...ody-structure/

Here is a really good video by an engineer explaining the difference and some misconceptions.

https://m.youtube.com/watch?v=IhbXPzPlzNI

Thoughts?

Being unibody does not preclude a part of the unitized assembly from being designed similar to a ladder frame. Unibody just means that the body isnít bolted to the frame; which normally use rubber isolators at the points where the body and frame attach.

The E-Series van that preceded Transit was body on frame and the body can be detached easily from frame.

Unibody vans similar to Transit have always had a ladder-like structure under the floor as far as I can recall. Those included the older Dodge vans and also Chevy/GMC before the current Express model.

Unlike a car, a van has to have a very strong floor to handle concentrated loads, as if someone loads a heavy pallet between the front and rear axles. It also makes it easier to attach rear axle.

I havenít looked closely at Transit Cutaway, but it may be like the ProMaster Cutaway. The rear part of frame can be unbolted from cab area, but itís a rigid connection. Some would refer to this as semi-unibody, or semi-unitized.
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post #5 of 7 (permalink) Old 08-13-2019, 10:13:PM Thread Starter
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No. It's unibody.
The structure of the transit is called uni-ladder.
They advertise it especially for the chassis and cutaway because upfitters can add more structural support.

All the vans have it. Exact same structural design. I looked under mine...2 main beams running front to back like a ladder.
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post #6 of 7 (permalink) Old 08-14-2019, 10:01:AM Thread Starter
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My point of starting this discussion was to point out that the Transit unibody is no slouch. Unibodys can be every bit as tough as a body on frame. The video did a really good job of explaining that.
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post #7 of 7 (permalink) Old 08-30-2019, 02:23:PM
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Quote:
Originally Posted by jdybvik View Post
My point of starting this discussion was to point out that the Transit unibody is no slouch. Unibodys can be every bit as tough as a body on frame. The video did a really good job of explaining that.

Photo of the Transit Cutaway frame.










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