Wednesday, Jun 14, 2017 at 21:58
I think in cases like this you have to put yourself in Google's position. They are giving a driving time for a dirt road, not a sealed one, and conditions on dirt can vary considerably depending on weather, traffic and the frequency of maintenance. They have to cover themselves by allowing for the worst possible situation.
As an example, about six years ago I drove over the road from
Brewarrina in NSW to
Hebel on the Qld border. It was normally a good smooth straight unsealed road but this time it had just been opened after rain five days earlier. There were deep washouts by the dozens running from the centre of the road straight to the edge, I had to go through them in first gear at walking speed. My average speed must have been
well below 40. I misjudged one and went in at around 15 kph and it nearly threw me out of the car.
The same thing can happen on the road out to
Birdsville or anywhere else but it is not only the aftereffects of rain that you have to worry about. You can run into bull dust holes, deep dips in causeways, sandy patches, deep ruts, corrugations or loose surfaces on bends. You can't set time limits or decide on a cruising speed on those roads. You have to drive to the conditions and expect the unexpected.
There have been so many accidents, particularly rollovers, on those seemingly good unsealed roads that about four years ago, Vic Widman, an experienced 4wd tour leader, driving instructor, magazine writer and radio broadcaster wrote an article for "On The Road" magazine about the need for
driver training for good unsealed roads. You simply can't treat them like a sealed road. They are not the same even though they may look like unsealed freeways in some cases.
You may find Vic or the magazine can send you a copy of the article if you contact them
VIC
Another issue with those roads, or even sealed ones, particularly if the car has been modified, is the way it handles in corners or sudden emergency situations. Many 4wds these days have different springs,shocks, air bags, oversize tyres and the owners favorite tyre pressures, In addition the weight distribution is often far from ideal and the centre of gravity has been moved.
Have a look through the charts in this link.
UNDERSTEER/OVERSTEER All of the popular modifications/alterations to 4wds will have a direct effect on the way it handles but very few owners would have a clue what it is going to do in fast corners,particularly on dirt, or what is going to happen in emergencies. Very few would even know that the understeer/oversteer handling characteristics have changed or could change after
suspension modifications.
Manufacturers for the last fifty years or so have set their cars up to understeer because the vast majority of drivers can't handle oversteer. If you find your car slides it tail out at 70 to 80 kph or higher on a dirt road, you will most likely need the skills of a good rally driver to bring it back in line again. If you can't control it then you could easily join the long list of rollovers.
Take your time and don't worry about time limits or average speeds. The old rule of being able to stop in the distance you can see definitely applies out there.
AnswerID:
611914
Follow Up By: mike39 - Thursday, Jun 15, 2017 at 08:38
Thursday, Jun 15, 2017 at 08:38
Great post splits, I fully endorse your comments.
My feeling is that too many people want to take their "high speed" city life style with them when they travel into remote areas.
Slow down and smell the Gidgee (an experience in itself) plus a few good
camp spots along the way too.
There are often 6 deck cattle trucks operating along that road, often a convoy of 3-4. Pull over and stop off the road on the upwind side, the dust cloud would choke a brown dog.
Mike
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881959
Follow Up By: Laz - Friday, Jun 16, 2017 at 10:55
Friday, Jun 16, 2017 at 10:55
Thank you, guys. Great suggestions.
Regards,
Laz.
FollowupID:
881981