The GP tail cone is optional, but the nose cone is mandatory...

Are you sure that yours is damaged?

Have you tried connecting it to a different ESC, just to see if it will turn?

Also which plane do you have, just to clarify... as often we start talking about different planes on a single thread.

Nope.. I looked at it again... Here's a cut and paste...

❏ 4B. If you are installing the optional rotor cone, press it
onto the fan rotor as shown.

Then they talk about cutting away a portion of the aft cone for cooling....

i have the exceed rc 70 mm F-18. when i put a volt tester on the wires i found voltage on the negative terminal. when i unplugged the red and yellow wires, i found voltage on the negative wire of the motor and none on the esc negative wire. with that i figure theres a short in the motor. to my knowledge there seems to be nothing wrong with the esc. also, do you happen to know any information on the type, size and manufacturer of the motor they used? thanks.

You CANNOT test the motor and ESC the way you are doing. This is not like a brushed motor where you can test continous DC current.

The ESC pulses the lines in sequence and in between it reads back current to determine the position of the motor.

At best you can check continuity between any two of the motor leads, ( there IS NO "Positive" or "Negative" ).

You should get low resistance between any two no matter how you combine them.

If you do it is likely that the motor is OK... you would then want to test it on another ESC.

Remember ALL THREE wires must be connected for the motor to work.


Did you know you could order a replacement from Nitroplanes here:

[link=http://www.nitroplanes.com/06a05-15.html]Replacement[/link]

You can also order an almost identical motor from here: [link=http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=8138&Product_Name=Turnig y_2836_Brushless_EDF_Motor_3200kv]Other[/link]

ok, i have check all of the above, the motor turns, but no beeps when i plug in the battery, even with a full charge. all power leads are connected. throttle lead is connected. everything else works fine but the motor. seems theres no response to any throttle input from the controller.

What do you mean that "the motor turns"?

By hand? With power?

Did you get continuity accross ALL THREE motor leads?

I'm suspecting that you blew the ESC... not the motor.

the motor will turn by hand and not when you move the throttle.

Ok, this still suggests the ESC, so what about continuity accross all three leads.

In other words no matter which two you test, you should get continuity.

Try the three combinations and report back if you would.

ok, i tested all three leads and got zero resistance. Im suspecting its the esc

Yup.

If the motor had been shorted or burned out while running at least one combination would have resulted in no continuity.

Do you have one of these?

I have several... I can GUARANTEE you that it is NOT optional.

The blunt front of the assembly degrades air flow by over 50%! if the cone is not installed.