Monday, Aug 21, 2006 at 14:55
We've just got back after another 16,000 km across the top and across the centre and found the same as "Sudsy".
Quote:
"They're caused by vehicles suspensions when tyre pressures are too high"
Apart from the tyre pressures too high, speed appears to contribute to the formation of them.
We found that if you drive on the wrong side of the road the vibration from the
corrugations is not as bad which leads me to think that the ramp of the corrugation faces in one direction eg:"BARCHAN type sand dune" which has a 34 degrees repose angle.
The corollary to this is that internal roads within most cattle stations are not usually corrugated and if they are they are minimal, is this because they have the tyres on their vehicles usually at the correct pressure and dont drive at the same high speeds.
We have also noticed that the composition of the road surface determines the type of corrugation sandy top isnt as bad as that pink gravel that ramps up into
corrugations 60mm high.
Cheers aston
FollowupID:
447686