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Old 04-13-2013, 08:38 PM   #1
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Steep Hill, hard surface: What Gear?

13Apr2013

Maybe I’m making a mountain out of a mole hill, but in the interest of safety, and not wanting to damage a rental…

I’m new to 4W drive vehicles. We will be renting one on the island of Hawaii. Last time there we could not go down to the black sand beach at Waimanu Valley (west coast, South of the Kailua-Kona) because a sign said: 4w drive vehicles only! (Plus have plans to go to many other places.) The owner’s manual states not to drive in the 4wd mode on hard surfaced roads—Do not use 4L (Low) range when operating the vehicle on dry pavement. Driveline hardware damage can result—but only on loose, slippery, etc. surfaces.

The road down to the black sand beach is concrete, as I seem to remember it, and very steep. So I’m wonder how to drive the hill? Please advise.

Thanks.
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Old 04-14-2013, 02:16 PM   #2
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Correction on the Valley!

14Apr2013

Sorry for an error, the Valley is Waipi'o, via Waipi'o Road, a 25% grade, 900 foot descent in one mile! Reading our Hawaiian guide, maybe it might not be a great idea to do.

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Old 04-14-2013, 02:22 PM   #3
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Quote:
Originally Posted by 4wlarry View Post
14Apr2013

Sorry for an error, the Valley is Waipi'o, via Waipi'o Road, a 25% grade, 900 foot descent in one mile! Reading our Hawaiian guide, maybe it might not be a great idea to do.
ya think.
When you get to the bottem of the hill are you on the beach???? If so, I don't belive they meant driving the hill in 4wl but in the sand.
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Old 04-14-2013, 02:33 PM   #4
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Well you can't use 4wd on a non slippery surface. Jeeps don't have the 3rd differential between front and rear axles. So if you're in 4wd there's usually a little wheel slippage that lets the axles unwind. That can't happen on concrete or any hard surface. Eventually something gives...

If you're going down an incline, then 1st gear if steep. You should always go straight, so 4wd should be okay.


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Old 04-17-2013, 10:35 AM   #5
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17Apr2013

Thanks for your reply.
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Old 04-17-2013, 05:40 PM   #6
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I know what road your talking about, I hiked it one time, it sucked. Definitely take a 4wd down it, I wouldn't worry too much about it being pavement, just take it slow, and at the bottom, its a dirt road for a while to the beach, its usually empty because it is a pain to get to by foot, and not many people drive down it, because they don't have a 4wd. But yeah, just take it slow, it shouldn't matter about being on pavement, just a lot of turns around the mountain, and on a narrow road.

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