Monday, Feb 01, 2010 at 23:57
Off-track
Corrugations make it harder for all vehicles of all shapes and sizes and all number of driven wheels. A vehicle that could get through a track without corrugations will find it a lot harder on a badly corrugated track on similar terrain.
There are a lot of readers who would never have been into the sandy deserts and would think corrugations are nothing much based on their experience on formed dirt roads. I must say I was a bit like that too not so long ago. I had heard of the similar corrugations in the
Simpson desert and thought "how can sand get corrugations?" saw pictures that showed them and went on to really believe when I drove over them. The pictures I have seen of the Canning corrugations are very similar to the
Simpson desert corrugations.
Sometimes they are so big they are more like waves in the sand than what people would normally think of as corrugations, particularly crossing a
sand dune on the approach and descent. They make it hard to maintain steady momentum when cresting a dune and can cause a lot of bouncing and pitching. The wheels not in contact with the ground can not help maintain momentum. A 4X4 has twice as many powered wheels than a 2WD and is less affected.
The corrugations hammer the vehicle mercilessly and usually manage to break something sooner or later.
The sand has stories to tell. Sometimes you can see where someone has gone much too fast up a dune causing scalloping and then you can see where they touch down hard on the other side. I have often wondered how many impacts a front diff can take on sand before breaking.
Flynnie
FollowupID:
671639