650rpm on 4" wheels is OK, that is about 7.7mph. The Honey Badger 2.2 used 4.33 inch wheels with a motor/gearbox giving about 844rpm at 19.8v meaning about 11mph and if you watch some of the videos...
Most ESCs are indeed Brushless but the SimonK stuff doesn't make it a brushed ESC (least, not to my knowledge and experience in using the SimonK firmware). The BotBitz ESCs do start off life as a...
That ESC is a brushless ESC (there are three wires on the opposite side to the power wires) which won't work with a bushed motor such as a 775. You need to match the types (normally) when selecting a...
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