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Old 01-27-2019, 07:29 AM   #3 (permalink)
BrokeDad
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Also the 120S has brushed motors. They will put a strain on the lipo when they start going out. One that isn't as healthy as another will die quicker. Eventually even a brand new one won't last long. If the heli has over 100 flights on it there is a good chance it could need new motors. I have a 120S and keep extras on hand as none of them has lasted more than about 200 or so flights.
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