Quick non-powered prop question

Discussion in 'IRCWCC' started by darkapollo, Jan 17, 2022.

  1. darkapollo

    darkapollo Well-Known Member

    Joined:
    Mar 26, 2008
    Posts:
    809
    Location:
    Carlisle PA
    Just a few quick questions on non-powered props.
    They can be actual props? IE with blades? Not just flat disks?
    Can they spin freely so long as they are not providing any thrust? (Like a pinwheel)

    The rules are only very specific about drag disks and their size and shape. It only says ‘non-powered props must not be larger than powered props’

    The reason I ask is because I noticed in testing on my particular build with various sizes of drag disks, a large trough of water was created causing severe cavitation and at full speed, actually sucking the stern under.
    So could someone clarify rule C-5? I would like to print out some additional props for the outboard shafts as non-powered and wanted to make sure I was within the rules.
     
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  2. Kevin P.

    Kevin P. Well-Known Member

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    Mar 29, 2015
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    Location:
    Chantilly, VA
    The answer to each question is yes
     
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  3. darkapollo

    darkapollo Well-Known Member

    Joined:
    Mar 26, 2008
    Posts:
    809
    Location:
    Carlisle PA
    Thank you!!
     
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