While our common sense tells the story here, I need someone to do the work for me since I'm lazy and incompetent. I need an actual rule, regulation or statute to cite, to prove my point on this. Are there any FMCSA scholars on this forum who can help? If you can give me a statute, I'll abuse the "like" feature on trucker report and "like" every one of your posts until they lock me out of the website. anarchy at it's finest
Double Trailers; Heavier Trailer before Lighter Trailer 23 CFR
Discussion in 'Experienced Truckers' Advice' started by moloko, Mar 19, 2017.
Page 2 of 7
-
-
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
-
Yes that's right, there's a 5th wheel on the bridge.
Are you hauling something like this?moloko Thanks this. -
Exactly, but without the sleeper.
-
The boss said I needed some special training on how to drive an empty truck but loaded trailer. Not sure what training program they have to deal with this dangerous situation, but The Ludovico Technique came to mind.
Was this what he had in mind when he said, "Special Training"? If so, I'm so not down for that.
-
Ok. For body jobs and wagons I have a simple rule. You wanna play the 20% game that's fine but not in low traction weather like rain or snow. My wagon will never weight more than my bodyjob.
I don't think your weight guesses are correct. My peterbilt 389 is 9500kg which is somewhere near 22000lbs or so.... your truck with a tanker on it and heavier front axle must weight a good bit more then that.
You absolutely MUST know what your body job Unit weighs alone.
Either way you were probably overweight on the front axle of that wagon.Mike2633 Thanks this. -
This is actually good news, because I believed it was so overweight, that it was illegal. But fuel weighs about 6.2 pounds per gallon, and I had 2000 gallons in the compartment. I definitely was not going to play the low traction game.
If you want to know where I'm going with this, I'm probably going to need to get an expert.
I knew it was dangerous, but I'm going to try to find some examples. Some concrete case studies of the worst case scenario happening because the rear trailer was heavier than the front power unit. Anybody who can help me, I will be so grateful to. I need science, I need laws and statutes to cite, and I need case studies of this having actually happened before. We only have these rules because somebody learned the hard way, at one point. At some point in time, somebody probably lost their life because the rear trailer was heavier than the power unit. So that's where I'm at on this.Last edited: Mar 20, 2017
-
If you hook a set backwards you can feel the difference. Especially in high speed curves and sharp turns.
It feels like someone's trying to push your butt out from under you. In low traction environments you'll likely jackknife.
If you think of a how a standard set of doubles with a dolly turn you'll see why. In some 90* turns the tractor will have completed the turn while the rear pup is still facing the original direction, if it's heavier than the lead pup it's momentum will push it straight through instead of following around the turn.
The rear pup will also be more likely to roll over as you accelerate out of the turn in your tractor and the rear pup is still completing the turn, whip a short wheelbase trailer around like that and it'll roll pretty easy.moloko Thanks this. -
I know, I have felt the difference, and watching that back trailer sway around in the mirror really scares the doo doo out of me. Not gonna be me.
BUT can we get some actual facts to back all this up?? Of course we all know, this is the stupidest idea ever. We know this from experience. It's about as stupid as showing up to a job interview stoned on PCP. It's about as stupid as robbing a bank with a note, and on that note, you're asking for a cashier's check made out to your own personal name. It's about as stupid as reaching into your pockets while a cop is telling you to walk towards him slowly with his gun drawn. You just don't do this.
But where are the facts and examples. I just need to know that.
I'm already finding an overwhelming amount of evidence in my favor, in reading the STAA of 1982 and reading the cited CFR section. But, we could simplify this. I need an example of how this went wrong in real life--the more tragic, the better. I need our assertions that the rear trailer will continue pushing the power unit, to be backed up by calculus (this is pretty common if you read the text of the STAA or CFR actually, when they spell out weight limits etc).. Anything you guys can give me. Pages from a company handbook stating this is prohibited. Anything at all, will help.CasanovaCruiser Thanks this. -
My mother actually has her doctorate in physics so let me send this through to her and get some "official" mathematical reasoning for ya lol
Her & her friends will probably love this #### -
@moloko can you explain how you end up with that 1 compartement loaded on the trailer?
Second,you ask about doubles when you drive a truck trailer.
Completely different.
Do you have liftaxles on your truck?
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
Page 2 of 7