Grinding sound on HK 2403 BL 2100kv

782 views · Published 8 March 2011 · 0:23 · Indexed 15 October 2026

Channel: Serkan ÖZKAN · 2011 · Science & Technology

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Why does this sound occurs? I lubricated all the bearings and tightened the screws but still the sound occurs.
Li-po: 2S

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