ShinerBock wrote:
brulaz wrote:
ShinerBock wrote:
brulaz wrote:
???
The F150 RegCab 144" wheelbase has a thicker frame when it comes with the HD Payload option. It also has a HD axle, wheels, stiffer suspension and LT tires.
The HP Payload F150s are designed and built to carry heavier loads than the non-HD payload F150s. And as I understand it, so are the world trucks. I suspect their low tow capacities are due to their low HP.
It is due to long bed configurations. The regular cab HD 144" with an 8 ft bed was the one that had a different frame from other long beds.
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No. The 144" Reg Cab with the HD Payload Option has a heavier frame, HD axle, suspension, wheels and tires compared to the non-HD 144" Reg Cab because it is designed to carry more payload, up to 3000#.
The LWB SCrew already has the HD frame, so the HD Payload option just adds a HD axle, suspension, wheels and tires.
It's obvious to me at least that these high payload trucks are designed and built differently than the normal F150s.
The link you provided provides all the information needed to see this.
Then how would that explain that the SuperCrew with a 6.5" uses the same frame in both HD and non HD packages? As far as the Supercabs, if you get an 8 ft bed then it automatically bumps it up to the HD packaged and frame.
I know the HD package adds more to the suspension as well, but Robert up there was only talking about frames when he said......
RobertRyan wrote:
No they are not the same, very different. The current F150 uses several frames, for different applications,
....which is why I told him his statement was incorrect about the frames. I don't see how you say he is correct there when he is obviously not?
Apparently with the long wheel base F150s (like the SuperCrew with 6.5' bed), the engineers decided that a thicker frame was necessary even without the HD option. And when upgrading these trucks with the HD option, they determined that the thicker frame was already strong enough and all they had to do was upgrade the rear axle, suspension, wheels and tires.
However with the short WB 145" F150s, with the thinner frames, they decided that for the HD Option a thicker frame upgrade was also needed, as well as the rear axle, suspension, wheels and tires.
The HD Payload F150s are clearly designed and manufactured with heftier components as necessary to support the higher payloads. Not all of them needed heftier frames, but the RegCab 8' bed apparently did.
This applies to all the 2011-2014 trucks. I guess the 2015s are even more variable.
But I'm not sure why we're talking about the F150 at all, except as an example, of how Ford upgrades its trucks to increase their payloads. Yes, Robert only mentioned frames, using them as an example, but I believe he was talking about the whole suite of changes made to upgrade payloads.
I've heard of GVWR *downgrades* that make no mechanical changes, but all GVWR upgrades that I've seen in NA trucks involve mechanical upgrades of some sort (but maybe just a spring pack, or wheel and tire change).
How this plays out with world trucks, I dunno. But from what I've seen their payloads are realistic.