Full Throttle Rob
Pebble Pounder
My $0.02.
I have wondered since the first time I really checked out a crawler, why they build +8 degrees of caster into crawler front axles.
Positive caster is for straight-line tracking at road speeds.
More positive caster decreases steering ability and increases required steering effort.
Ever watch a dragster's front tires as they turn and lay more on their sides than actually turning?
That's about +30 degrees. Perfect for high speed straight-line tracking. Crappy for turning.
Negatve caster(putting your upper ball joint ahead of your lower ball joint) increases turning ability while decreasing both straight-line tracking and required steering effort.
Forklifts have zero to -5 degrees caster to boost steering ability(in forward gear) in conjunction with rear wheel steering and a short wheelbase, because of their low speeds.
I have often thought of swapping knuckles side to side to give -8 degrees caster to my rigs.
I just haven't given a $#!t enough to ACTUALLY do it...
I have wondered since the first time I really checked out a crawler, why they build +8 degrees of caster into crawler front axles.
Positive caster is for straight-line tracking at road speeds.
More positive caster decreases steering ability and increases required steering effort.
Ever watch a dragster's front tires as they turn and lay more on their sides than actually turning?
That's about +30 degrees. Perfect for high speed straight-line tracking. Crappy for turning.
Negatve caster(putting your upper ball joint ahead of your lower ball joint) increases turning ability while decreasing both straight-line tracking and required steering effort.
Forklifts have zero to -5 degrees caster to boost steering ability(in forward gear) in conjunction with rear wheel steering and a short wheelbase, because of their low speeds.
I have often thought of swapping knuckles side to side to give -8 degrees caster to my rigs.
I just haven't given a $#!t enough to ACTUALLY do it...