After looking at what I had going on for another half hour or so yesterday, I decided to do away with the "3-way adjustable gusset". After a closer look I realized that the shock mount bracket was actually damn near bottoming out on the gusset in any position other than the highest. So I opted to go with just a simple triangle gusset (2 1/4" H x 4"W) with a single mounting hole. I started welding it place and called it a day before I got any pics taken, I will get some posted up by this afternoon. I did "test" the articulation of the swing arm/shock (without the pre-load damper connected) and it seems very smooth and fluent, no binding anywhere. And even with the pre-load damper not being installed I couldn't get the frame to hit the floor, so that's a good thing.
For the record, I did follow up on Koncrete Kid's last post about swing arm angle to the swing arm pivot point and he is correct about it's relativity to traction. Now, I didn't read anywhere that said how the forces will pull the wheel different directions (upward or downward force) depending on where the axle/pivot point is located, but it did go into detail on how the
higher the pivot of the swing arm, the more downward force can be transferred to the wheel. So, in a nut shell, basically the same concept. Though, it also stated that the chain/sprocket position/s have more influence on squat and anti-squat than any other factor. It was a good read BTW.
http://www.sportrider.com/tech/146_0404_motorcycle_traction_geometry/So I took this into consideration, and also did some close observation of my stock '58. When looking at the '58 I noticed that the OE swing arm sits almost completely parallel with the ground, assembled without rider, so I obviously had a little room for improvement. I ended up jacking up the swing arm as high as I could go with the jack I was using and took a step back and looked at it. The swing arm had a nice positive stance without being to far over the top. I was also reliant on the fact that I know when the pre-load is cranked all the way up on this shock, it gets very stiff and doesn't move much without some work. From the measurements I took, the swing arm should be a few degrees positive fully loaded up and the pre-load at about 3 where I used to keep it at.
Scottie