Forum Discussion
blt2ski
Jan 06, 2014Moderator
They probably put it under lock and key, because it was not as good as it was hyped to be! Yeah it was a spec, that one can compare rigs of different types, shapes and forms........
BUT, it still did not take into account how we all use our trucks. IE the one that lives in the flatlands, can probably pull more than one that lives in area's with steeper grades. Ala the 12% min grade part. Does not do me a lot of good when I see road signs thru out King County/Seattle where I am in the 12-18% range. I even know where a road is that is 24% in grade. Yes a steep mother.
If it was a true how to use the specs to get the correct truck for your application, it would say how to derate the max rating if you were pulling say a 24% grade vs the 12% speced. Or if you were pulling a trailer with 100sqft of frontal area vs the std 60 or 80!
Tow ratings and gcwr is in reality, as much as some want to call it a safety rating, it is nothing more than a performance/warrenty rating. IE how fast you can go, max grade you can go up etc. Stopping in my book is bogus, as the trailer brakes stop the trailer, truck stops the truck. IF the trailer brakes are way oversized, you can stop quicker yet, same with the truck.......
If you are going to quote specs, make sure that anyone can see the spec, how it is figured out, how you can decrease or increase depending upon your application.....Then a spec works, if not, then it is useless as the J2807 spec is IMHO!
Marty
BUT, it still did not take into account how we all use our trucks. IE the one that lives in the flatlands, can probably pull more than one that lives in area's with steeper grades. Ala the 12% min grade part. Does not do me a lot of good when I see road signs thru out King County/Seattle where I am in the 12-18% range. I even know where a road is that is 24% in grade. Yes a steep mother.
If it was a true how to use the specs to get the correct truck for your application, it would say how to derate the max rating if you were pulling say a 24% grade vs the 12% speced. Or if you were pulling a trailer with 100sqft of frontal area vs the std 60 or 80!
Tow ratings and gcwr is in reality, as much as some want to call it a safety rating, it is nothing more than a performance/warrenty rating. IE how fast you can go, max grade you can go up etc. Stopping in my book is bogus, as the trailer brakes stop the trailer, truck stops the truck. IF the trailer brakes are way oversized, you can stop quicker yet, same with the truck.......
If you are going to quote specs, make sure that anyone can see the spec, how it is figured out, how you can decrease or increase depending upon your application.....Then a spec works, if not, then it is useless as the J2807 spec is IMHO!
Marty
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