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Many EVs Aren’t Legal on Park Service 4WD Roads
(cleantechnica.com)
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this post was submitted on 12 Aug 2024
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I’d love to see something other than you just saying no to back up your argument. Because just repeating wrong information doesn’t make you any more right. I didn’t even have to really look hard for sources that mention a transfer case as a key component of a 4wd system. And I’d say all of these folks probably know more than you.
https://www.edmunds.com/car-buying/awd-vs-4wd-whats-the-difference-and-which-to-choose.html
https://www.carmax.com/articles/awd-vs-4wd-which-to-choose
https://www.motortrend.com/features/4wd-vs-awd/
Oh, and on top of that, in the rules that this whole thread is about, they specifically mention the transfer case as the requirement for a system to be 4wd.
There is an answer and it’s the one I already gave. There are always edge cases and exceptions because there are an absurd number of variations and vehicles types. By and large I already gave the deciding definition, and it is in what I linked as well as many others places.
Edmunds - “Traditional 4WD systems have a two-speed transfer case with high- and low-range modes that can be selected by the driver, either with an electronic switch or a mechanical lever.”
CARMAX - “Key to how a 4x4 works is a piece of equipment called a transfer case. This connects the vehicle's front and rear wheels, splitting the engine’s power evenly between them and making both axles turn at the same speed.”
And the article didn’t list the rules because it was wrong about everything. The rules are listed by the National Park Sevice. “A four wheel drive vehicle is defined as a sport utility vehicle (SUV) or truck with at least 15-inch tire rims and at least eight inches of clearance from the lowest point of the frame, body, suspension, or differential to the ground. Four wheel drive vehicles have a transfer case between the front and rear axles that locks the front and rear drive shafts together when four wheel drive is engaged. All wheel drive (AWD) vehicles do not meet this definition.”
So again, repeating yourself doesn’t make you more right. It does however increasingly make you look like an ignorant ass that has no desire to actually learn anything.
If you think a center differential does at all the same job as a transfer case then you definitely need to do a lot more reading. They are entirely different components with completely different roles in a vehicle. There are AWD systems that can selectable, that doesn’t make them 4WD. And you still haven’t sourced anything. You just keep saying I’m wrong. So if I’m wrong then provide some actual evidence.
You’ve been studying and building transfer cases and differentials for decades? Are you just running down the list of shitty internet troll tropes?
I was responding on this thread for people who wanted answers about something they didn’t understand. Not to argue with someone who just wants to argue.