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    nelson51's Avatar
    nelson51 Posts: 1, Reputation: 1
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    #1

    Mar 12, 2011, 01:50 AM
    How to make two shafts one insde another turn in opposite directions?
    Two helo props going in opposite directions.
    Dr1757's Avatar
    Dr1757 Posts: 186, Reputation: 25
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    #2

    Mar 15, 2011, 03:02 AM

    The driving force for a counter rotating main rotor system comes from the main transmission, which is designed so that one shaft can reverse direction inside of the other shaft. This type of main rotor system eliminates the need for a tail rotor.
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