thehutch I believe the speed has to do with the engineering of the scooter electronics itself. The number of magnets, the controller, the optimum speed of the motor where you get the the most HP without overheating the motor or its top rated rpms. Probably stability after 40mph requires a damper and a stiffer stem to avoid speed wobble.. My 60V Mantis 10 pro very noticeably, is a much faster accelerating scooter, then my Phantom. I have the P settings dialed up equally on both. The Mantis reaches top speed very quickly and it has the power to go faster but, it’s obviously electronically limited to just under 40mph. I suspect your V2 has the same “disability”, a limited top speed. I will probably sell one or the other scooters eventually and get one of the scooters I mentioned above to suit my “need for speed”. 🙂
ESG Top Speed: 37 mph (Mantis Pro), 39.1 mph (Phantom 52 V)
ESG 0-35 mph: 9.3 s (Mantis Pro), 13.1 s (Phantom 52 V)
ESG Hill Climb (time): 7.9 s (Mantis Pro), 9.2 s (Phantom 52 V)
ESG Hill Climb (avg speed): 17.1 mph (Mantis Pro), 14.9 mph (Phantom 52 V)