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CC Phoenix 45 stops after Full Throttle

Old 04-04-2004, 11:02 AM
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CPT Moonlight
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Default CC Phoenix 45 stops after Full Throttle

My CC P45 speed controller shuts down when I come down from (full throttle 30 sec)and then keeps on cutting out when I restart.
My setup AXI2820/10 Lipo 3s-3p 1500 -11x7 prop I have only reset the cutoff voltage on the controller to 9V.

Your Help would be welcome

CPT M
Old 04-04-2004, 10:44 PM
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d_wheel
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Default RE: CC Phoenix 45 stops after Full Throttle

Have you checked the battery voltage under load? My guess is that it is pulling down below the 9 volt shutoff threshold of your speed control. What brand is this pack? A 1500 mah pack will not handle the current your motor is drawing at full throttle. As a matter of fact, 3 of them in parallel (4500 mah) might not handle the current either, unless they will operate at 7C or more. I can not run my Pigi/PJS 1000 at higher than 3/4 throttle on a 3000 mah pack or the speed control (Phoenix 45) will shut down. When I check the voltage under load, it pulls down to 8.8 volts at around 30 amps. My motor calculator shows that your motor/prop will draw about 34 amps. You might try a smaller prop, or just don't use full throttle.

Later;

D.W.
Old 04-05-2004, 10:13 AM
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Jason Beach
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Default RE: CC Phoenix 45 stops after Full Throttle

Yup, I think you're at the limit of what those batteries will put out. I would guess that you're pulling between 30 and 40 amps on that setup. Your batteries are capable of 36amps max. As it has been mentioned at this amp draw your voltage is probably dropping below the 9v threshold. For that motor and prop I'd suggest a battery capable of 45-50amps.
Old 04-05-2004, 10:14 AM
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Matt Kirsch
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Default RE: CC Phoenix 45 stops after Full Throttle

That's pretty much it in a nutshell. You're likely drawing too much current for the batteries.

The solution is, a smaller prop, at least one more pack in parallel, or a completely different battery. Lowering the cutoff voltage is not a solution, and only serves to damage your batteries.
Old 04-05-2004, 10:53 AM
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fritzthecat
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Default RE: CC Phoenix 45 stops after Full Throttle

I don't think it's the battery. I ran the same setup with Kokam 3s3p and was able to run the motor for more than 5 minutes full throttle before the 9V LVC.
But just to eliminate the battery, set the LVC to 7V and try again - carefully. If it still doesn't work give the Castle guys a call, thay have superior customer service.

Fritz
Old 04-05-2004, 12:32 PM
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CPT Moonlight
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Default RE: CC Phoenix 45 stops after Full Throttle

Many thanks to all, Ive found the tab on one of the one pack has torn off,Ill go back to soldering to PCB and not soldering the tabs together, you learn by your mistakes and I will go to a 10x7 prop

Many Thanks Lads

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