I have this fan cover with a couple burn holes from the exhaust I plan on repairing by plastic welding. I'm also going to put a fan scoop on because I think they look cool and nobody has ever put one on a ch80.
My TinyTach mounted with 3M double-sided foam tape. I bent a piece of sheet metal to hold the tach on the bracket, and another tape to the leg shield. The Spree may be more challenging, but the light weight of these units doesn't challenge 3M's fine adhesive technology very much. So far at least, it hasn't fallen off.
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
I got it mounted with some double sided tape and one screw/nut, trimmed the plastic on the right side. I wanted to keep the tach in my line of sight so next to the speedo was the best option.