how to avtivate a brushless motor

[turbine]

Hi, I'm working on a project using a 12v brushless duct fan motor from a hobby jet plane that requires a Electronic Speed Control unit.

My problem is I am not using this motor for a R/C use, and need this motor to turn on and off with out a servo connected in other words I want this motor hard wired to turn on and off at a flick of manual switch or a Voltage Switch.

I have it connected currently to a servo tester which has a manual dial which you turn but the problem is that every time you turn it on you must move the dial to activate the motor.

[elkangorito]

Do you want the motor to start at full rpm or not?

[thatirwinfella]

it could be done with small relays and timers, but then it gets costly.

if you could describe some parameters, ie, size, cost, wieght, for a control system, that would help us in our ideas.

[scanfor]

Turbine

The brushless motor used in model planes/helicopters is effectively an AC motor, and won't run on DC. The ESC (electronic speed controller) that they use has an inverter to create a "synthetic" AC waveform that can vary the frequency/amplitude of the wave to control the speed. It doesn't need to be connected to a servo, do you mean it needs to be driven by a receiver? The cost of the ESC is minimal (under $100) when one considers the cost of any alternative system.

Scanfor