otrfun wrote:
TCA did an outstanding job of explaining, what I feel, is the primary reason this guy's frame failed---improper COG. If the COG had been located directly over the rear axle, and not a number of feet behind, this particular failure would have never occurred---even overloaded as he was.
If the owner of this truck would have taken the time to visit a scale (unloaded and loaded), yes, he would have discovered his truck was overloaded. However, he would have also discovered his front-axle was being off-loaded hundreds and hundreds of pounds---indicating a COG far behind the rear axle.
IMO, it's not a simple case of calculating GVWR and payload and calling it safe. *Where* you place the payload (COG) is a critical consideration, too.
Bingo!!!!
Not putting words in your mouth but I think the whole dam thing was his fault. The dealers told him it was OK and he believed them. That camper is heavy on a 550 much less a 3500. There has to be some kind of responsibility to the owner driver when doing something like this. It is the cornerstone of our weight police argument on many occasions. This man got in it and drove down the road to disaster. My god what if he was doing 60 or 70 forget it, they would have been killed and others too.
"Quote"
“First of all, Mike, I want to let you know that your assessment of the payload capacity is correct,” Michael Pavel told Truck Camper Adventure. “Yes, I was unaware of it when I bought the truck and camper and should have done more research on the payload.
"Quote"
But overloading the truck was only part of the couple’s problem. The triple-slide truck camper’s massive rear overhang plus two 72-pound bikes placed an inordinate amount of weight behind the rear axle. Coupled with the weight from the 1,100-pound 6.7L diesel engine and a 300-pound aftermarket front bumper, this fulcrum affect created a “bowing” affect in the center of the frame, exactly where Pavel’s Ram 3500 frame split in two. The arched and cracked frame shown in the photographs provide additional evidence that an excessive amount of weight was located behind the rear axle.
We have gone back and forth about this very topic "COG" tons of times. Not only is it more common than not but it most assuredly is the driver owner responsibility to be aware of such an easy mistake.
I am still solidly in the corner of being over weighted by a few hundred pounds but with my decades of TC owning experience this an acceptable place for me to be. I can certainly appreciate the every ouncers a little bit better with this article.
Cheers, Joe