Hi all,
I've been lurking here for a couple of months. I replaced my SV-650 with a new '06 S3. There's been a couple of threads lately about putting a hard top case on the S3, and about providing some sort of backrest for a passenger. I've done that, and the results are pretty good. Note that you need to replace the plastic piece on the rear under-side of the seat with the one designed to work with passenger grab rail. This has a notch cut in it to allow the grab rail to stick through.
First, I had an SW-MOTECH luggage rack left over from my SV-650. This is the small aluminum rack designed to hold a Givi topcase.
The rack is designed to fit many bikes with an adapter plate. I made an adapter plate. This plate is made from 3/16" steel plate. I cut and drilled the plate to fit onto the passenger grab rail mounting points, and have holes to match the SW-MOTECH rack.
I also made a small addition to the SW-MOTECH rack, by adding the small strip of aluminum to the bottom of the rack. Note the notch in the plate.
I also have a backrest. This was designed for a BMW 'S' model and sold from Pirate's Lair.
So here's the whole thing assembled and on the bike.
My wife has now ridden with the backrest and says that there's plenty of room on the back and she now doesn't need to have a death grip on me while we're riding.
I think that maybe I made the bracket a little too long; it sticks out past the back end of the seat by about an inch too much. If I were to make another bracket, I'd shorten it by that much.
I don't have a topcase, but I'm sure it would fit without a problem. Currently I'm getting by with a tank bag. But a lockable topcase seems mighty convenient.