Ed Cesnalis Posted January 26, 2022 Report Share Posted January 26, 2022 My tach now shows prop RPM or 50% RPM something in that range. My EMS lost its configuration settings and the tach starting reading values near 50%. I updated the 3 Rotax specific settings but my tach still reads near 50%. Anyone know what might be happening here? Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted January 26, 2022 Report Share Posted January 26, 2022 Do you have the engine type set to Rotax? Quote Link to comment Share on other sites More sharing options...
Ed Cesnalis Posted January 27, 2022 Author Report Share Posted January 27, 2022 11 hours ago, Tom Baker said: Do you have the engine type set to Rotax? Yes. It is one of the 3 settings that I lost. The other two where number of CHT to 2 and number of egt to 2. Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted January 27, 2022 Report Share Posted January 27, 2022 Here is what the tach settings show on a CT in the shop. Quote Link to comment Share on other sites More sharing options...
Ed Cesnalis Posted January 27, 2022 Author Report Share Posted January 27, 2022 Thank you, thank you I see I am reading 44% or prop rpm. 9 minutes ago, Tom Baker said: Here is what the tach settings show on a CT in the shop. Quote Link to comment Share on other sites More sharing options...
Ed Cesnalis Posted January 27, 2022 Author Report Share Posted January 27, 2022 puls/rev mine are now set to 2 causing the 50% reading. thanks Quote Link to comment Share on other sites More sharing options...
Anticept Posted January 27, 2022 Report Share Posted January 27, 2022 Huh that's another one that has randomly lost settings... Quesion Ed, did you have a voltage spike? Alternator issues? Quote Link to comment Share on other sites More sharing options...
Ed Cesnalis Posted January 28, 2022 Author Report Share Posted January 28, 2022 3 hours ago, Anticept said: Huh that's another one that has randomly lost settings... Quesion Ed, did you have a voltage spike? Alternator issues? battery went low, too low to start. no spike or Alternator issues. Quote Link to comment Share on other sites More sharing options...
Anticept Posted January 28, 2022 Report Share Posted January 28, 2022 See, we had one lose its memory because they popped the alternator in flight by accident while reaching for the throttle. When they pushed the breaker back in, everything went haywire. After two returns to Dynon and them unable to replicate the issue, I grabbed another unit and compared line by config line, and found that CHT settings got scrambled. Seems that the Dynon EMS units' memory might have voltage issues. Quote Link to comment Share on other sites More sharing options...
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