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-   -   Motor cuts out at half throttle. (Phoenix 25 controller) (https://www.rcuniverse.com/forum/brushed-brushless-motors-speed-controls-gear-drives-123/2564857-motor-cuts-out-half-throttle-phoenix-25-controller.html)

Ralgh 01-20-2005 08:27 PM

Motor cuts out at half throttle. (Phoenix 25 controller)
 
I have a Phoenix 25 with a Hacker B20 15L powered by a Thunder Power 2100Mah 11.1v battery and an 11X4.7 APC prop. The Phoenix 25 is on the default settings. When I advance the throttle stick the motor cuts out just before it gets half way up. The highest draw I have seen is 4 amps and the lowest battery voltage I saw was 11.8v. Motocalc says this setup should not exceed any of my setup’s limitations. If I was going to make a guess I would say the Phoenix 25 is messing up. I just want to get your opinions incase I have overlooked something. Thanks for the help

Matt Kirsch 01-20-2005 08:51 PM

RE: Motor cuts out at half throttle. (Phoenix 25 controller)
 
You're measuring current, right? 4 Amps and 11.8 Volts tells me the ESC is set for the 12.0 Volt cutoff.

Ralgh 01-20-2005 11:16 PM

RE: Motor cuts out at half throttle. (Phoenix 25 controller)
 
Originally I had the default voltage cutoff of 5.0V. I reset it for the proper cutoff for my 11.1V Li polly battery, 9.0V. Then I thought about trying my Zagi battery so I reset it to the recommended 5.0V cutoff for that battery. I actually tried three different battery packs and all had the same result.

RC Extreme power 01-21-2005 01:17 AM

RE: Motor cuts out at half throttle. (Phoenix 25 controller)
 
Go to www.rcgroups.com
then go to the Vendor section and Castle Creations has there own forum to answer your questions and slove problems, Thy are very good about responding
Milton

Ralgh 01-21-2005 01:56 AM

RE: Motor cuts out at half throttle. (Phoenix 25 controller)
 
Thanks. I posted over there to see if they can help.

Matt Kirsch 01-21-2005 08:42 AM

RE: Motor cuts out at half throttle. (Phoenix 25 controller)
 
You don't mention how you're configuring the ESC, whether by PHX Link or through the "transmitter" interface. Configuring from the transmitter is confusing, and it's very easy to make a mistake. Many a 4-letter word was uttered during my first foray into configuring a Phoenix 80... You're sure you have the cutoff set correctly?

There may be a software issue with the ESC, then. Shawn Palmer will be able to help you out. Wish we could get him over here, but he's firmly entrenched at that "other" site.

thejc 01-21-2005 11:49 AM

RE: Motor cuts out at half throttle. (Phoenix 25 controller)
 
Are you controlling it with transmitter -reciever or servo driver? I have a brushed 25 that will not operate properly with servo driver. It operates ok through transmitter-reciever. Only one of a dozen that has had this problem.

Ralgh 01-21-2005 03:59 PM

RE: Motor cuts out at half throttle. (Phoenix 25 controller)
 
I am programming with the transmitter. I believe I am programming it properly because I successfully changed the prop brake setting which I can verify by running the motor. I guess in answer to your question, I am as sure as I can be that I have set properly. I followed the instructions as precisely as I humanly can.

I don’t know what a servo driver is. I have the ESC plugged into channel 3 on the receiver.

Ralgh 01-22-2005 06:42 PM

RE: Motor cuts out at half throttle. (Phoenix 25 controller)
 
Update:

I hooked up my brother's Phoenix 25 and everything works fine. I sent the controller in for repair/replacement.


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