Pre programmed? Make sure your battery is charged. A volt meter on the DC range will show a fully charged 4s battery at 16.7 to 16.8 VDC. If below the cutoff voltage(Pre programmed ?) you will shut down prematurely. Cutoff voltage should be 3.1 to 3.2 VDC per cell. Give a description of your setup, this will help others in troubleshooting.
 Bob

motorman
Is the ESC a ZTW unit?  These systems come with default settings and that should not be the problem.  Can you send me a picture of the components you have, I have done the testing of these setups for RSM and know a lot about them.  I will be happy to help you get this working. 
Andy Borgogna
abborgogna@hotmail.com

does it run 6 seconds after the initial spool up and stop - or just the spool up? 

there is a 25 second delay programmed in after the spool up to start of flight time

OK we can rule out the soft start up issue.  When you turn the motor on does go up to max RPM and then drop down to say around 9000 RPM?  If you don't hear it drop down that indicates it is not going into governor mode.  This can be caused by installing a lighter prop (as in less pitch or less diameter or both) or changing from a 3 cell to a 4 cell battery.   The change in motor load or voltage will allow the motor to try and rev above the max RPM that the KV and battery cell count will allow.  This then can lead to the timer/governor not being able to reduce the max RPM down into governor mode range .  When the timer/governor does not detect that the RPM has dropped indicating it has gone into governor mode the firmware shuts the motor down.  This is easy to check.  Put the programming stick on the timer/governor attach the battery and press S1 once to make the LED glow bright, then twice to turn the motor on.  It is best to stake down the plane  when doing this and always do this with a fresh battery.  With the motor running use the ">" push button to raise the RPM until it won't go any higher.  I recommend using a tach to monitor the RPMs while pressing the button.  Each press of the button will raise the RPM approximately a hundred RPM.  When the RPM stops increasing then switch to the "<" button and drop the RPM about 10% below the max RPM.  Example, if the max is 10,000 drop it a thousand to around 9,000 RPM.  Stop the motor by pressing S1 again, this is important because pressing S1 at this time set the RPM into the firmware.  Unplug the battery and remove the programming stick then plug in the on/off switch making sure that the wire with the black tubing (or black paint) on the connector is positioned  toward the center of the timer/governor.  Reattach the battery and turn the motor on.  You should hear the motor rev up to the max RPM and then drop down to the set RPM, that is it will go to 10,000 and then drop to 9000 in the example above.  If it does this that indicates the governor/ timer is going into governor mode and it should stay running.

If it does go into governor mode but still shuts down then I would recommend you return it to RSM for repair.  Let me know how things work out.
Andy
 

Hi MM, It sounds like Andy was giving you the right advice and your system is just out of its optimum working range. The flight time is set in 10 second steps, but just remember that you need to add the start-up delay as well. The default is 25 seconds. Having said that, the time of the actual motor run should be as per the number of secs that you set.

It's still a little strange that you can't set the rpm range properly, because the program can actually go from real slow to flat out. The governor working range is the thing that needs to be in a certain optimum band to be efficient, but this is common to all governor systems. What you can try is my usual method of getting everything back to basics. With the battery disconnected, put the slide switch into the ON position. Now connect the battery. You should hear a couple of quick beeps and then they stop. Now switch the slide switch off again, and the usual esc start-up beeps should be played. This sets the throttle range of the esc to that of the timer.

Unplug the battery and replace the slide switch with the programming card. Re-connect the battery and press the S1 button once and the LED should light up. Press S1 twice, the LED flashes twice to let you know that you are now in set rpm mode, and the motor should run up to the last rpm that was programmed. Now the "<" and ">" buttons should set the rpm up and down with a good range. As Andy said, you can stick a small prop on to the motor and set the rpm this way. If you then replace the prop with the one you want to fly with, and it can't hold the same rpm, then it means that your overall system is not powerful enough. What I sometimes do to check the system out is to put one of my R/C receivers onto the esc, calibrate it with the throttle stick, and then give it full throttle. This is just quicker than pressing the ">" button on my system, and also lets you know if the rest of the system without the timer is o.k. This tells me what the maximum rpm can be and I just allow a lower percentage for the governor to work. The trick is to set the governor rpm so that it can still hold the set rpm when the battery is at its lowest useful voltage at the end of the flight.

I hope that this helps a bit. Keep us posted.

Keith R

Hey Keith
You posted your response while I was typing mine.  I too am concerned it won't go below 9000 RPM, I test down to 7000 when I am testing hardware. 
Andy

When you called me I suggested that you send the system back to me so that I could retest it. I am still awaiting delivery of it from you.

As I told you the darned thing worked perfectly when I tested it prior to shipping the system to you. Be that as it may, Our systems are guaranteed to work. If they do not just send them back and we will either reset everything and retest it or we will refund your purchase price.

What you purchased was a "plug and play" system. I do not want you to have to mess with the darned thing and hope that it works in your model! Just send it back so that I can run the tests and see why it is not working like it was when I sent it out to you.

Regards
Eric Rule

Motorman:

Let me know how the system is working now that I switched out the bad ESC.

Regards
Eric Rule

I sent you a reply, let's work together and get this running right.
Andy