Missed this first time around. How are you getting on with it? I've not got the proper green light from physio yet but been using the one I built recently to go to next village on the parcel run to the PO & myHermes shop. Only 3.5m but involves a big dip in between. I opted not to fit a throttle & it has plenty of kick even restricted. Unrestricted test - it flew around the football field at 20mph plus with little effort.
https://www.retrobike.co.uk/threads/orange-c16-r-volt-e-bike-1996.427655/
https://www.retrobike.co.uk/threads/orange-c16-r-volt-e-bike-1996.427655/