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steven.pitt2(at)ntlworld.
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 Posted: Thu Mar 28, 2013 1:40 am Post subject: Dynon Skyview |
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Can anyone help with this issue.
Dynon Skyview showing 8000+ on the RPM gauge at max RPM test running on a
914.
As the aircraft is fitted with the Airmaster prop system, the controller
should be ensuring that the engine is not overspeeding. Is it a set up
problem or has anyone come across this issue?
Tick over seems correct at around the 1600rpm.
Thanks in anticipation.
To all of those who answered my email re Skymap breakdown, I am still to
decide which way to go and I thank you all for the instant input.
Regards
Steve Pitt
G-SMDH trigear
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ploucandco
Joined: 16 Sep 2007
Posts: 69
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| Posted: Thu Mar 28, 2013 6:00 am Post subject: Re: Dynon Skyview |
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Steve, I would connect the 914 TCU serial output to a PC with the ROTAX TLR46.exe program. There you can see many parameters of the engine and especially the real engine RPM. Also the complete history when the engine was run out of tolerances. Running a ROTAX914 at 8000 RPM means: go to the ROTAX dealer to order an engine teardown and likely an overhaul!
I am pretty sure that there is a setup issue with skyview. The installation manual says:
Trigger Coil (Rotax 912, except 912 iS)
The Rotax 912 engines have a 5th trigger coil for the purposes of electrically monitoring rev counts. This trigger coil outputs to a two-wire harness. Connect either of the two wires to ground; connect the other to the standard RPM Left input on the SV-EMS-220. If you observe erratic tachometer readings or momentary “spikes” in the display - particularly at higher RPM – install a 60K resistor inline (in series) between the trigger coil and SV-EMS-220 (RPM LEFT (Pin32, White/Green wire).
Also, is the Skyview sensor setup correctly done?
Jacques.
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