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Seized new nitro engine (Raptor 700)

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    Seized new nitro engine (Raptor 700)

    I just replaced my heli engine with a brand new one (Max 91SZ-Hring PS-Hyper). While runing in the engine for about 3 minutes, I accidentally knocked down my Tx. As a result, the trotttle stick got pushed to the max. ( Luckily I have removed the blades earlier). It took me about 10 to 15 secs to react by pinching the fuel line. Later, when I try to start the engine again, I realised that the crank shaft was dead jammed and it won't rotate. Can anyone kind soul offer some advise please. Thank you Sir.

    #2
    Me not expert but I encountered the same situation. What I did was to remove engine from mount, backplate and drowned it with wd40. Worked good after that. In yr situation, the sudden rev may hv caused something to 'melt'. Should be the piston or piston liner or both. U have to take apart the engine to know. I once hv the same engine as u. One flight was all it took for me to bin it...but that's just my experience.
    Heli-ADDICTION:
    Mikado Logos, RaptorG4s, X7F, 600ESP...
    JUST one more Logo...for the month.

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