Hey, kids it's me! I bet you thought that I was dead!

I have actually been working, just not posting.  I expected to do the rear spring mounts really quick and then just post it all when it was done.  It turned into an epic and still isn't done, but close.


I had to drill out this slot to .5 inch.  It grabs a drill bit the instant it touches it. Sooo

Welded a cover over the hole...

Drilled the hole...

Then cut off the cover.  Bolt on this bracket:

 

 Make the other side:

weld on a standoff:

For where the shock mounts to the car, I had to move the mounts up quite a bit from the bar I made back in part 1.

Figure it out with cut up cards.  From the calculations (I will post these shortly) we see that as the springs depart from vertical orientation we get a falling rate suspension.  In other words the more the spring compresses, the lower the wheel rate becomes.  You want wheel rate constant or at least rising, so that there is nice compliant ride at small displacement, and then becomes stiffer as the spring deflects to help prevent hitting the suspension bump stops.

If I mount the springs vertical and near the differential like they do on drag cars, then I have a suspension that for a given bump stiffness is not stiff in roll.  So I am aiming to have the shocks as close to vertical and as wide as I can. I also have to setup in the range the manufacturer lists for ride height for the shock.  And pick the springs that will support this ride height.

 

Lay it out (handy to have the plasma cutter here to let me nest these close)

Had to awkwardly tig tack these since the mig won't reach. 
Right hand holds the torch
Left hand jams the filler
Other left hand holds the parts

 I am further than this, but don't have enough pictures to show the story.  Will post again later...