Okay, I want to start out by saying that this installation was meant to be temporary as I just wanted to test the windscreen to see if it would help cut down the turbulence. The temporary installation allowed me to make adjustments and modifications to determine the optimum placement of the screen. Why is it still temporary? Because it works, regardless of the hillbilly appearance, and I prefer to spend my time driving Penny while the weather is nice. I'll develop a better mount this winter.
These pics should help those who are interested in mounting the Miata windscreen to their Speedster. Hopefully someone will figure out a better way and share it so I don't have to.
This first pic shows the windscreen attached behind the passenger seat. It is attached to the pivot bolt on the top frame. The bolt is covered with a cable sleeve. The L shaped rod is attached to the front spine of the top. It keeps the windscreen from blowing forward.
This pic shows the bolt. I simply took advantage of some exposed threads of the top frame pivot bolt and threaded on another bolt, which attaches to the windscreen hardware. I had to drill out the swingarm to accept the larger bolt. I used split washers at every pivot point to keep everything stationary.
Here's a close-up of the piggy back bolt setup
A better look at the setup
Here's a view of the swingarm attached to the windscreen. With this setup you can adjust the height of the screen.
Well, that's it. Obviously, you have to remove the screen to put up the top. I keep a couple of open wrenches to make necessary adjustments.
Feel free to contact me with any questions. You purists, keep your comments to yourselves.