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Thread: rotax 503 fuel use

  1. #1

    Join Date
    Aug 2015
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    rotax 503 fuel use

    those who have or are flying with a rotax 503 what is your average fuel burn
    I am putting one on my project and have a 6 gallon fuel tank, I am not sure if I should add another tank or not

  2. #2
    George Sychrovsky's Avatar
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    Aug 2011
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    Shirley MA
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    Two strokes like Rotax burn 0.1 gal per hour per HP that means 503 at normal 75% power setting will burn 4 gal per hour
    Disclaimer ; opinions of others will vary depending on what they’re selling.

    http://the-grand-design.com/

  3. #3

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    You may not have found this info yet, cdlwingnut?

    file:///C:/Users/Owner/Desktop/OM_%20447%20UL%20SCDI_503%20UL%20DCDI_582%20UL%20D CDI%20mod.%2090_ED02.pdf

  4. #4

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    Aug 2015
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    Quote Originally Posted by Mike M View Post
    You may not have found this info yet, cdlwingnut?

    file:///C:/Users/Owner/Desktop/OM_%20447%20UL%20SCDI_503%20UL%20DCDI_582%20UL%20D CDI%20mod.%2090_ED02.pdf
    no is there a link to it?

  5. #5
    rwanttaja's Avatar
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    Jul 2011
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    Seattle
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    Quote Originally Posted by Mike M View Post
    You may not have found this info yet, cdlwingnut?

    file:///C:/Users/Owner/Desktop/OM_%20447%20UL%20SCDI_503%20UL%20DCDI_582%20UL%20D CDI%20mod.%2090_ED02.pdf
    You linked to a file on your own PC, Mike. Does this work?

    http://raanz.org.nz/techproject/rotax/d00286.pdf


    Ron Wanttaja

  6. #6
    6 gals will git you there...

    You need another to get back....
    .
    Small fly-ins don't always have gas...
    .
    Gotta Fly...

    PS I'll be squeezing in ANOTHER 5 gals on Cross country flights ,more weight more fuel.
    Attached Images Attached Images     
    Last edited by planecrazzzy; 01-24-2019 at 12:04 PM.

  7. #7

    Join Date
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    THAT'S FUNNY! Thank you, Ron. Yes, I can believe i did that.

    https://www.rotax-owner.com/en/suppo...nd-503-engines

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