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Need new esc advice

Old 11-19-2018, 03:28 PM
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racsanone
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Default Need new esc advice

Had an extremeflight 2s-3s lipo 25 amp esc that didn't survive a Zagi crash.. Can I replace it with. 2s-3s lips 30 amp esc? Or should I find another 25 amp? Using it on a Astro flight brushless engine and 2200 mah lipos thanks
Old 11-20-2018, 07:08 AM
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ron_van_sommeren
 
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30A, 100A, 1000A, 10000A, ..., all ok, apart from the extra mass to drag around.
Controllers don't force feed motors with electrons. Current at full throttle is proportional to pitch¹, voltage², Kv³ and diameter⁴.
Controller does not come into play, it will pass on the current the systems asks, even if it would lead to its fiery deatch.

Without the exponentation
extra current with one or two cells added, simple table

Vriendelijke groeten Ron
• Without a watt-meter you are in the dark ... until something starts to glow •
e-flight calculatorswatt-metersdiy motor tipsCumulus MFC
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Old 11-20-2018, 07:10 AM
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In fact, it is a good practice to have some headroom built in.
About derating motors, controllers, batteries, electronics in general:Vriendelijke groeten Ron
• Without a watt-meter you are in the dark ... until something starts to glow •
e-flight calculatorswatt-metersdiy motor tipsCumulus MFC
Old 11-22-2018, 09:10 PM
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Thanks Ron. Found a local 50 amp that is working great and I can use later for bigger better things..... Sound advice and much appreciated.

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