I made an updated version with a combined tachometer. I think the rpm reached about 8,000 before the ESC cuts out. You should probably be able to push it a higher with a better ESC. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-YTIsFaAP17c.html
The three main components are a servo tester, brushless motor and electronic speed controller. You should be able to use a variety of products but I've included the exact ones that I used in the video description
