Edgeflyer Posted January 17, 2023 Share Posted January 17, 2023 Hi. I have a used trex 500 with flybar and align 750 gyro. Unknown esc but probably an Align 50amp, hopefully with governor. The confusing thing is a black signal lead from the negative of the flight battery which goes to an interrupt or contact below the main gear, then on to a connection on the forward end of the tail boom, then emerges at another contact at the tail rotor. I assume this is an rpm sensing system but there is no apparent connection to either the esc, gyro or receiver. Can someone please explain this setup? Quote Link to comment Share on other sites More sharing options...
Jon H Posted January 17, 2023 Share Posted January 17, 2023 Sounds like someone getting excited about grounding to me. You have a photo of it? Quote Link to comment Share on other sites More sharing options...
Edgeflyer Posted January 17, 2023 Author Share Posted January 17, 2023 Here is the gear contact and 2 tail boom contacts Quote Link to comment Share on other sites More sharing options...
Barryorbik Posted January 17, 2023 Share Posted January 17, 2023 I have seen this before and believe it was to reduce/eliminate static build up when carbon fibre tail booms were introduced. It was never an issue with the aluminium booms of old. Barry Quote Link to comment Share on other sites More sharing options...
Richard Wills 2 Posted January 17, 2023 Share Posted January 17, 2023 Yes this is grounding in the aim of preventing static build up from the belt. Apparently it can cause static discharges that can send gyros haywire. If it was mine I would remove it and bin it. Quote Link to comment Share on other sites More sharing options...
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