Does any one know if there are high speed servo motors that can be interfaced with arduino. The motor should be fast enough to make a toy rc helicopter fly.
If you are talking about RC servo motors, they all can be interfaced to the Arduino.
But you say the motor is to make an RC helicopter fly. Servos are used to control the RC helicopter, not as a primary drive to make it fly. Maybe the terms you're using aren't quite right.