Overvolting motors is not that black an art but the first thing I would do is just ignore any reference to resistance. I am not trained in this area so I just pretend I don¹t need that part. Silly looking part anyway. Here is how it applies to my numbers; 300 watt 12 volt motors running at 18 volts The 300 watt motor will become a 600 watt motor and have an increase in speed of 50 percent. The amps required for running the vehicle will go down but can potentially increase on stalls. DC motors are generally OK to be over or under-volted by 50 percent. The robot community on average goes 200 percent but thats because it has to last only 3 minutes and then it has to cool down for 40. Thermal mass is your friend here or simply put, - bigger motors take longer to get hot and can stay hot for longer and generally draw less amps.
Should say when I overvolt I gear down so the end result is more an increase in torque than speed, what I loose in speed when gearing down I pick up again when overvolting but am just doing it using less amps. One very last note - overvolting motors can make them more efficient. A 12 volt motor might be 70 percent efficient at 12 volts but at 24 volts it could be 75 to 80 percent efficient/ something like that anyway. George (resistance is futile) Mastoras --~--~---------~--~----~------------~-------~--~----~ You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] Visit the group at http://groups.google.com/group/rctankcombat -~----------~----~----~----~------~----~------~--~---
