Line when rock climbing

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Gemaskerde Tuinvurk
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Line when rock climbing

Wed Jul 20, 2011 12:03 am

Are there any rules of thumb when going over rocky terrain about what line to take?

E. G. I've heard that you should always take a line so that you drive over the biggest rocks with a wheel, rather than around them since it lifts up the entire chassis, giving you more clearance for rocks.
Karl

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4ePikanini
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Re: Line when rock climbing

Wed Jul 20, 2011 7:38 am

I think visualization of where the 4 wheels will run, and what the car will do because of that line, is key!

experience is extremely valuable - I think....
Marius Fourie
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SimonB
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Re: Line when rock climbing

Wed Jul 20, 2011 8:54 am

This is not something that can be easily described in words. You need to actually go out and do it and even better watch others do it so you get a feel for what lifts where and by how much.

The first rule of thumb is get out and plan your line especially for uphills. Get someone to guide you if possible. Discuss the line with them. I have done trails I would have considered downright impossible with an experienced guide ahead of me.

The rule of thumb you mentioned is commonly mentioned but it is not always the correct thing to do because there are too many factors at play. I know because it cost me a smashed left rear fender. Granted it was on a grade 4 trail made into a grade 5 by the pissing rain.
Simon Bloomer
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Re: Line when rock climbing

Wed Jul 20, 2011 9:02 am

For a moment I thought we are now into mountaineering! :)

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The high line is always the better one, but ....
  • Once the front wheels are over that rock, make sure it does not catch the sills (halfway between front and rear wheels)! I often choose a line which is half-way up a rock's side (provided it has no sharp edges)
  • As Marius said, learn the geometry of your vehicle. Learn to accurately place the wheels. Practice with bricks on the lawn. See whether you can accurately drive over them with you wheels.Place bricks on top of each other to test the clearance at different places under the vehicle.
  • Always try to straddle a donga/ditch, never put a wheel in it! Once a wheel is in a ditch, it is difficult to steer out of it, and the clearance is compromised.
  • Never forget that your vehicle touches the ground in four spots only. Low spots/areas between the wheels can be ignored, high spots/areas have to be lower than your clearance.
Spend lots of time on "mild" trails, specifically to get to know your vehicle.
Watch others (good and bad).
Gerhard Fourie
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Gemaskerde Tuinvurk
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Vehicle: 2007 Pajero 3.2 DiD LWB
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Re: Line when rock climbing

Wed Jul 20, 2011 10:21 pm

Thanks guys.

Going on my first trip to Sani pass in August... will let you know how it goes (with pics!) :)
Karl

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