The problem with the Tamiya motors is that they run at 3v with a high current draw (~2amps at stall). Most motor controllers have a minimum of 6v, there are a few for 4.5v. You can get replacement motors from other brands, but that is an added cost.
The problem with the Tamiya motors is that they run at 3v with a high current draw (~2amps at stall). Most motor controllers have a minimum of 6v, there are a few for 4.5v. You can get replacement motors from other brands, but that is an added cost.