castor wedges for spring lift? (1 Viewer)

[sodafeld1]

At what sort of lift height would folk here consider using castor wedges? Apparently 3degrees is most common which I guess would suit the most common lift height of 50mm? Fat side facing opposite diff side of axle.
I lifted 45mm in the front and 60mm-ish in the back. Not that I wanted more height , I wanted better load capacity without sagging springs.
The axles do change angle a bit to meet up with the drive shaft from the diff. The shafts seem ok after 6 months of lift.
But I wonder if there is long term damage to shafts created by lift. They seem to be a flexible forgiving design. Is steering gear placed under greater stress? Fat tyres would for sure. Thank fully it is all heavy duty gear.

 

[RHINO]

Front springs have a center pin and don't effect castor with lift.

The axle isn't changing angle, just the relationship of angle between driveshaft and flange.

The caster comes into play with long Shackles some folks do, or used to.

The proper way to deal with that is a cut and turn.

Also, toyota runs very little caster to begin with, when those shims were popular folks were actually adding negative caster and having steering problems, like death wobble.

45-50mm of lift is absolutely nothing to be concerned about for anything adverse.

Disclaimer, this is all just my experience, it's not to be taken as law.

 

[sodafeld1]

thanks man, clarifies and takes some of the mystery away from folks trying to sell stuff.

Didn't think to take pics of old set up before putting on the new shiny stuff. Takes time to become familiar.

My rear leaves carry 500kg constant load. dobinsons didn't have the hj75 rear springs at the time, so supplied hjz75 springs instead, they are around 16mm longer or something, they said the difference is nothing. They work fine.

 

[RHINO]

dobinsons didn't have the hj75 rear springs at the time, so supplied hjz75 springs instead, they are around 16mm longer or something,

That's interesting