the Vespa 300 unfortunately does not provide good options for mounting a smartphone holder.
I have therefore built myself a mounting aid for the existing on-site pocket holder. Then you can mount a standard bracket for a bicycle handlebar.
The actual smartphone mount must be purchased separately.
I have printed the parts in PETG. Everything is held together with an (stainless steel) M8 screw. Furthermore, a 5 mm shelf pin is needed as an anti-rotation device.
part3.stl is an optional hook, because the pocket holder is occupied.
All files used for development are included to support further developments.
I used the M8 nut from the 'Nuts and Bolts' library by Johannes Knerr.
! The bracket sits quite deep. So it is not safe to look at it while driving. The use is at your own risk !
The author marked this model as their own original creation.