I just installed a new electric motor on my park flyer Cessna and I run it full throttle and motor slowly dies out after 30 sec.. I do have an old nimh 8.4v that I have tried charging/discharging etc. It reads 9.2 v but motor runs out. Tried another motor and same thing, battery?

Hi richardh$
When that happens to me I usually replace the battery.

Yea, that's what i'm thinking. Thanks

Sounds like your battery is giving up. You might want to try a different one. Good Luck, Dave