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Thread: Grinding Noise?

  1. #1
    RC poster
    Join Date
    Mar 2013

    Grinding Noise?

    Just noticed this today on the DR-1. When I throttle up to about 40-50%, I can hear a quiet grinding sound. It sounds almost like chattering servos (like back in the day when you used to get interference on radios). I am thinking maybe the main bearings? The thing only has 5 - 8 packs through it. But, the rotors are a bit chipped up. It's my first heli.

    Is it hard to change the bearings? How many are there in the heli? Two come in a pack.

  2. #2
    RC poster
    Join Date
    Dec 2012
    Check your main gear i stripped mine and it was grinding pretty bad. Its a easy fix.

  3. #3
    RC poster
    Join Date
    Aug 2011
    Change props

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