Seventh Gen Grand Prix rear wheel hub upgrade design

[Last Indian]

So how do you change a sows ear into a silk purse? AKA rear wheel hub assembly! You take it back to a logical design that incorporates safety, performance & durability! 

The first thing will be to take the 2 10mm threaded holes that are currently blind drilled All the way through the knuckle as .4531 (29/64) to be tapped to 1/2 x 20 threaded holes. The other two holes that are already through holes will be drilled out to be tapped to 1/2 x 20 thread. After that 4, studs will be made. 2 long ones 2 short ones. I will detail these later, but here is an additional disconnect of the assembly design. They use 10 mm bolts to attach the wheel bearing hub to the knuckle! Yet when you see the bearing hub assembly the holes that those 10 mm bolts go through measure.460 in diameter! Not .3937 or even .400 or .405! They have .460! That’s.066 of clearance! That’s insane!

So it will be awhile before I get a chance to do any of this work, like a winter project, but I will updated  as I step through this.

Edited August 24 by Last Indian

[Last Indian]

Here is one other thought of how dumb this design is! In an old standard design that used a spindle with Timken tapered roller bearings when you applied the brakes there is zero load applied to the spindle or it’s bearings or castle nut! But in this design there is!! Since these 4 bolts hold the bearings hub in the manner they do, this sets them in single shear! Not even double shear, but single shear. So every time you apply the brakes you are applying a shear force to those  bolts! Again, that just stupid & unsafe.

Edited August 24 by Last Indian