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Hey All,

I have spent the last hour scouring Rotax manuals, and this site, and I can't find what I am looking for - SO - off to the brains trust.

We are installing a new CSU prop, and the CSU controller has 1 white wire that they say needs to go to the RPM Pickup.  I can't find any information, and there installation manual for the prop has nothing further than that.


The controller needs to know what RPM the motor is doing, as this is an electric CSU.

Can someone advise where this wire might go?  

PS - I have a glass cockpit too (Garmin).

 

Cheers

J

  • Re: RPM Signal for CSU Prop

    by » 3 months ago


    Hi John,

    "The controller needs to know what RPM the motor is doing, as this is an electric CSU."

     I stand to be corrected  - the CSU "controller" need only know what the prop RPM is.

    I have an Airmaster CS and a Dynon EFB.

    The Dynon displays engine RPM & MAP but does not control the prop pitch.

    The Airmaster controller (brain) controls pitch according to preset parameters (pilot can switch to manual override)


  • Re: RPM Signal for CSU Prop

    by » 3 months ago


    Hi Sean 

    This is a FlyBox controller for a CSU prop from DUC and it indeed needs the RPM from the motor.  It actually displays it on the FlyBox Controller.  

    The instructions have one wire and they wanted it connected to what they call RPM Pickup. 

    I’ve asked them, and waiting for a response.  


  • Re: RPM Signal for CSU Prop

    by » 3 months ago


    I assume the DUC controller is configured for Rotax 9??- if not the engine rpm readings will do strange things to the prop pitch?


  • Re: RPM Signal for CSU Prop

    by » 3 months ago


    hi John

    There are 5 trigger coils on the ignition side of the engine.  4 connect to a harness that feeds to the electronic modules on the top of the engine.  The 5th one is the tachometer feed.  This has 2 wires as it is a coil and it will pulse once per revolution of the crank.  it seems rather odd they would sell this without some instructions if it is for a 912 or 914 carb engine.  I note a pdf document on the DUC webpage but it will not let me download.

    Cheers


  • Re: RPM Signal for CSU Prop

    by » 3 months ago


    Yes - It is configured for the 912 ULS.  Designed for this motor.


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