Wednesday, Nov 19, 2003 at 07:26
I'm not a 4x4 expert so don't take my comments as that of an expert - just what works for me after many years of "doing it".
I let the tyres down to the same as the truck - about 18psi usually.
For the last 3 years our crew has consisted of a 6.85m, 6.50m and 5.5m glass boats on tandem hydraulic braked trailers.
If the track is really chopped up we have on occasion dropped the smaller boat and trailer off and used the vehicle snatched to one of the other tow vehicles as a tandem pull.
When the rear vehicle towing the boat hits soft sand, the strap tightens and the front vehicle helps with the load - a bit like having twice the horsepower.
But you still have to go back and get the boat!
After many years of watching drivers on
the beach I'd say the majority of problems are driver error.
Some attack like a Kamikaze pilot, others try and idle through - neither usually works.
I think it's a fine balance between selecting the right line, right gear and maintaining the right revs.
Too low a gear and you can't get enough momentum up without the engine valve bouncing.
To high a gear and you run out of legs.
Changing gears with that amount of weight on the back is disastrous - the trailer pulls you up on a dime and you end up with a standing start - or attempting a standing start!
For the three years we haven't bogged once - the 10 years prior to that was a different story!
I should also point out for the past three years we've been driving autos.
It takes a while to change your driving style but once you master an auto - they are good in the sand... hope I haven't opened a can of worms with that statement.
Dave >
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