| Author |
Message |
    
Jess
| | Posted on Tuesday, September 03, 2002 - 01:35 pm: | 
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i have been readin' up on lifts, and people are tellin' me about castor fix kits after you get a lift...and i have no idea what this is...lil' help
sorry for the ignorance |
John Cinquegrana (Johnc)
| | Posted on Tuesday, September 03, 2002 - 02:34 pm: |
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Here's a very simple drawing I created a while back. Maybe someone can add the verbeage:
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John Lee
| | Posted on Tuesday, September 03, 2002 - 03:16 pm: |
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Jess,
Imagine the axis upon which your front wheels turn left and right. That axis is not vertical but rather is leaned backward. This makes the front wheels want to self-center as you drive.
If you do a web search, I'm sure you could find scores of different detailed explanations of "caster". Here is one diagram that might be helpful:
http://www.izook.com/tech/terminology.htm
The way the Rover's front suspension is designed, you lose more and more caster angle as you lift the truck and the radius arms point more and more downward. Your caster angle is fixed relative to the radius arm angle. As the radius arms point more and more downward with increasing amounts of lift, more and more caster angle is lost. |
M. K. Watson (Lrover94)
| | Posted on Tuesday, September 03, 2002 - 08:01 pm: |
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and to add to what John has said, this change in your castor causes the truck to feel a bit quick in the steering. also it will cause your truck to react more to the road. it isnt nothing you cant learn to live with but for some its too much. it is all correctable by several different means. you could have made or purchase trailing arms that are altered (i hear thats not such a cool thing). you could buy a limited slip front diff. and this will cause your truck to self correct when steering or road input causes a steering movement. you could have someone re-mount your steering knuckle and that will put your steering angles back in place. it all works just depends on how much mooola you have to spend. now the thing to ponder over are your poor bushings when you lift..hehehe
mike w |
muskyman
| | Posted on Tuesday, September 03, 2002 - 09:27 pm: |
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there have been a gazillion old bronco's that have been lifted...and the formula that has worked is to drop the rear of the front control arm 1" for every 2" of lift.
never hear any rover guys talking about such a simple low cost way of correcting it?
at this rate you lose only half the castor you do with no correction.
this method only works on single cardin driveshaft vehicles and it still concedes some offset of original drivline angles because it moves each end an unequal amount.
jess, pinion angle always needs to be looked at as well as castor angle when going off the board with a lift....if you are not ...if you just want a little lift to fit those 235/85/16's then get a small lift and dont worry about either. |
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