What Causes Grubscrew Issues in the Grasshopper 2 with a 380 Sport Tuned Motor?

The RC Deep Dive
10/04/2025 6 min Episodio 15
What Causes Grubscrew Issues in the Grasshopper 2 with a 380 Sport Tuned Motor?

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Episode Synopsis

The Grasshopper II (GH2) likes to kick out grub or set screws from that required Lunchbox pinion gear when upgrading the stock silver can 380 motor to a speedy 380 sport tuned motor. But why? The original Grasshopper (GH1) doesn't have this have issue. We dig into why this happens and possible fixes beyond thread lock.

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