In terms of the ecooter motor. There isn’t much info out there. There are some videos under this user which were helpful.
But no wiring diagrams or anything out there.
It’s much quicker to accelerate than an ICE bike. This ecooter has 2 modes. 1 equivalent to a UK 50cc license (so limited to 28mph). And then 1 equivalent to a 125cx licence - which I think will do about 60mph in the mode. I have a button to switch between the two but will need to disconnect the button and limit it to 28mph to get it registered.
If I build another, (my wife won’t let me, but if I did) I’d build a ruckus, use the flp battery tray. And change the design of the mount to accommodate the battery tray. May even be tempted to use Hung Bi’s mount as it’s a bit different. Then use a bespoke bigger battery. I think I’d also try and wire the controller and bike myself - just to learn how!
