|01-28-2015, 09:44 AM||#1|
RCC Junior Contributor
I am: Jeff
Join Date: May 2013
Radio of choice:
# of RCs: 10
Feedback: 6 / 100%
Total Props: 0
Not taking throttle- What's the problem
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I have a Spitfire Funfighter with a 2825-1950kv Brushless outrunner motor installed. I purchased it from HobbyKing in November, and flown it twice since then. The first flight was perfect, but the second flight when I gave it full throttle, either punched it full or gradually increased to full, the motor would go full then slow right down. I've tried using different batteries. I have an extra esc sitting around and was wondering if it was infact the esc that could be causing the problem.
Last edited by Max; 03-26-2015 at 08:13 PM. Reason: Changed title- was "Some advice please"- too ambiguous
|01-28-2015, 07:01 PM||#2|
RCC Pro Contributor
I am: Gord C
Join Date: Sep 2002
Location: kingston Ont.
Feedback: 1 / 100%
Total Props: 7
Re: Some advice please
Could be the ESC Does it or the motor get hot at all. This is where wattmeter is priceless. It plugs in between the batt and ESC and shows on the screen, the amp draw from the batt., the batt. voltage and the watts. As you open the throttle, you can see the amp draw go up as the motor load goes up. You will also see the voltage drop as the batt. gets more load on it.
It's good even for picking a prop where they give you the amp rating for the motor and you pick a prop to get as close to that without going over.
The main thing for what you are doing now though, is to tell what's going on with your system.
Not much help but if you can get a wattmeter from your local hobby shop you can get some readings.
Try a smaller prop on it for now just to see if it's overloaded.
Tried for my kamikazi pilots licence. Flunked the test.
|03-26-2015, 08:14 PM||#4|
★ Site Supporter ★★ Administrator ★
I am: Max P.
Join Date: Feb 2007
Location: Aurora, Ontario
Radio of choice:
JR and Spektrum
Feedback: 20 / 100%
Total Props: 149
Re: Not taking throttle- What's the problem
I would definitely swap the ESC first. Sounds like you may have fried it. Try going with a higher amperage ESC than what was originally in there
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