Ridgid smidgid, it is just a stupid frame, get over it yall'.

 

I wonder how much those MAN 8x8 trucks cost?

 

Probably not as much as you would think. A deuce and a half can be picked up for under 6k with pto winch and flatbed on a surplus site with under decent mileage/hours

Sent from my Galaxy using IB AutoGroup

 

this guy i know who i use to go mudding with bought a late 70's deuce with under 30k on it with a front PTO winch for 4k about three years ago. That thing goes through ever hole and pulls ever truck out with no problem

 

and yea ill take my good ol c channel frame ANY DAY if Ford ever goes to a GM type frame ill cry

 

i don't know....I've looked at my frame and would feel better if there were some cross bracing. I know i have cross bracing in the back be cuase of the tow hitch. so I'm thinking a plow mount in the front or even a front tow htich...just o get some cross bracing in there. i don't know what you guys are seeing that is worth defending but my 2005 SD looks like it has parallel I beams with no cross bracing other than the mentioned hitch work with the body sitting on the chasis. You guys should take a look and let me know if i am missing some chasis parts that you guys have.

 

Really? What does a C-channel frame do for you?

I like my nice and stiff F150 frame...and in the ten years they've been out I haven't heard of them rusting out. In fact my '97 Lincoln has a fully boxed frame that isn't showing signs of rust either.

 

The frames hold the truck up, are we all going to play engineer?

 

Most likely over kill on the information
http://altairatc.com/india/previous-...onsultancy.pdf

I was looking for a stress analysis video if the different types of frames.

Sean

 

School project?............lol

 

No but someones project would do the trick.
I just wanted to see it myself and share it with everyone here.

Sean

 

the fully boxed frame makes it harder for upfitters to run their wiring and other stuff where it's out of the way. I'm think that's the reason why Ford sticks with the open channel on the SD.

 

One mans "advantage" and all that.

Boxed vs open depends a lot on what you are designing for. If you want to be able to crow about a stiff unyielding frame then have at it, though I really fail to see the significance for normal real world use.

Open can have a number of advantages without really giving up strength in any of the areas that matter. For an "off-road" 4wd vehicle frame twist is often made use of for traction purposes.

You'll notice in the video how the Ford kept all 4 tires in contact with the ground up till the "failure". For the Chevys turn however the producers made a pretty good effort to cut away as the trucks stiff frame began to cause two diagonally opposing tires to leave the pavement. Goodbye traction unless you have lockers at each end. A twisty frame aids in keeping all the rubber in contact with the ground. It doesn't "have" to be that way, but it IS an easy way to gain some suspension flex.

If a stiff frame were the holy grail there'd be no need for a separate bed and all trucks could be built like those Avalanche things, and all your OTRs would be boxed instead of open.

I don't blame Chevy though. Ford would be just as quick to bias the tests to play against whatever weakness they were trying to portray their competition as having.

 

@German Mike

From one german to another: Sorry but this is just not true.

You can built a strong stiff frame which capable of combining both a good ride and both extreme offroad toughness.

In fact your second example, the MAN truck does in fact use a very stiff boxed frame, all the flexibility is only from the coil springs. In fact the stiff frame is the very reason why man decided to not use leaf spring here.

And those man trucks are from the 70's and they are not more rusty or cracked than anything comparable other truck from this era. It's just a question of material quality and rust protection.

Even way bigger military trucks as the Tatra (Pipe-frame) or the MAZ 543 are using stiff frames, the Bremach is using a stiff frame and so on.

Greetings

 

Yes, I i had to drive roads that were like the obstacle course in the video I would by the silverado. But I never seen roads like that so I'll keep my paid for 2005 f-250.

I just got a welder so I might weld some cross bracing in across the main beams.

I also wonder how much less flex I would get if I had a front tow hitch....that would connect bot beams together in the front.

I think stiffinging up the chasis is noticeable....I put strut cross braces and chasis cross braces in my 96 camaro and could tell a difference...but that was a convertable.