I am looking for some Brushed Motors equivalent to the RS 500 / 540.

This is somewhat close to what I need (all stats are approx):

Can Size : 3 / 3.5 inches (length) X 1 / 1.5 inch (dia)

Operating Voltage : 3 - 12 V DC

RPM : 18,000 - 25,000

Current draw at load : 10 - 15 Amps (could be less than 10)

Weight : 100 - 150 grams

Shaft size : 3 mm

I need 4 of these motors URGENTLY.

Thanks and Regards.

Try the power window motors used in cars

similar to your specs

no idea on the cost front - but should be
available at any auto store.

Already have those. They are smaller and don't pack the power that I need.

You need speed or torque?

This is what I am looking for. Will be using a 5/3 three bladed prop as a thruster motor for a Hovercraft.

hi vc..
may b i can help u....
here there r some stores selling these type of motors..
i purchased 1 of them some time back..
the motors are mabuchi make...
have high rpm and operated on voltage from 7.2. volt to 12 volt..