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Rotas 912 ULS Engine Test

in 912 / 914 Technical Questions 8 years ago
Hi i am now planning for an engine test and i am also making my self instrument panel for the test. does anyone have idea on what parameters should be on this instrument panel example like rpm, EGT.... (btw, engine test will be carried out on engine stand with propeller on)
does anyone know where to get a dummies propeller(test propeller) online

and the difference between a legit propeller and a test club.

Thanks

  • Re: Rotas 912 ULS Engine Test

    by » 8 years ago

    How you seen this video? 912 engine started and running just sitting on pallet.
    https://www.youtube.com/watch?v=nH1ZpvtXPIA
      
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  • Re: Rotas 912 ULS Engine Test

    by » 8 years ago

    Here is one test club manufacture: http://www.arrowprop.com/
    We bought a 4 blade 80hp test club from them in 2002 but the bolt holes are not perfectly aligned so it is painful to install. I understand they have a better jig for the ROtax propshaft now.
    Our other test club is from Hoffmann, very expensive.
    A test club is shorter (safer for the operator) and quieter than a real prop. It moves enough air to cool the engine but not much thrust.

    About the video: What is the oil pressure??? Do not run the engine without a prop. You can see many interesting videos on youtube.. but that does not make it OK to do the same thing.
    Thank you said by: Tan Miken
      
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  • Re: Rotas 912 ULS Engine Test

    by » 8 years ago

    If i were to do the engine test, what should be on the instrument panel? the critical one? or can i use BUDS instead. thanks
      
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  • Re: Rotas 912 ULS Engine Test

    by » 8 years ago

    The question you need to answer is, "What are you trying to test?"

    Is the purpose of the exercise to just see if one engine will start and sounds reasonable?
    Or do you intend to be Dyno testing dozens of engines and tuning them for peak power?

    Is the engine going to be run at idle for 2 minutes and then that's it?
    Or will you be running at wide Open Throttle for hours on end?

    What you expect as a result will determine what you will need.

    Only you know the answers!

    Bill Hertzel
    Rotax 912is
    North Ridgeville, OH, USA
    Clicking the "Thank You" is Always Appreciated by Everyone.

      
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  • Re: Rotas 912 ULS Engine Test

    by » 8 years ago

    I would say at a minumum you will need accurate rpm and oil pressure and temp readings. Assuming you are not going to run for long enough to allow temperatures to get too high. You do need oil temp to know when it is OK to take the rpm above 2000 and 2500.
      
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