Spindle bearing spacer
Another example of where I see this type arrangement with a spacer between two tapered bearings is on the pinion of a rear end. I'm not sure how it relates but they must use that arrangement there for a reason.
I guess its all about making sure the cones are absolutley parallel to each other. in theory you could use a crush sleeve in the hub in the same style as they do in a rear end, BUT would it achive the same aims? and in a rear end we know its all paralell, as the pinon shaft and beraings usually interface so well you need a puller to get em off crush sleeve or spacer and shim, is really just a preload setter..... and it does the job well enough.
In cornering how does a hub version help? even if preloaded correctly under lateral force a pair of wheel bearings is going to see 1 cup and cone slightly unload while the other takes it, regardless of the spacer. maybe if the stub axle flexes i guess haveing the bearing inners braced againts each other might help in that situation.
somone see's merit in these things but i can't work out why they should supposedly have such a large impact. its friday afternoon i'm stuck in the office on a sunny 23* day my brain may not be working to its fullest capability :)
Taller spindle or long baljoint i can see the impact on roll centre, seems to have merit, get the effect of lowering the car without lowering the car.... light weight lower arms and aluminium calipers, less for the spring to control a positive impact on handling..all good, chassis connectors, stiffer body. again makes sense but with these i'm missing something .....
