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HomeAircraftHelicopterHelicopter Main Discussion › scorpion 55A ESC overheating issue
02-08-2008 10:36 AM  10 years agoPost 1
helirulz

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Singapore

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Guys im running a scorpion 55A ESC with a scorpion HK2221-8 and I've been trying to track my blades on the Beam E4.
I do so by increasing my throttle to just below take-off RPM and take a look at the tracking. During this time im guessing my ESC is running at around 30-40% throttle.
After several attempts at trying to get the blades to track, the ESC gets really hot...hot enough for the heatshrink around it to shrink even further, exposing the electronic components inside it.

At first my friend who is an experienced electric-heli guy told me it was because my ESC wasn't running in its efficient range and told me to try flying at straight 85% throttle curve. I followed his advise but after about 2 minutes of punching my throttle up and down, the ESC was still just as hot.

Now im wondering if this has got to do with my ESC settings.
They are as follows:

battery type selection: lipo
cell count detection: 3cell Lipo
Battery low-voltage cut-off: 3V/0.85V
Power cutoff type: 50% reduction
Current overload protection: on
Motor Braking type: No brake
Motor acceleration time: 0.15sec
PWM control frequency: auto
Timing advance: auto
motor rotation direction: reverse

My ESC settings are pretty much default settings except that my motor acc. time is 0.15sec instead of default 0.3sec. Could this be too hard on my ESC and is what's causing the overheating?

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