speed control of 12v 18000rpm dc motor

[stunshiv]

hi,
i m having a 12v 18000rpm dc motor which i need to operate using 7.2v battery..how can i increase the speed of the motor without changing the battery...? can somebody help me...!!?

 

[FvM]

Sounds like you would want to use a boost, or buck-bust converter. The batterie's power delivery capabality must be sufficient for the motor, of course.