flex shaft getting longer or getting shorter?

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  • tuncd
    Member
    • Nov 2009
    • 39
    #1

    flex shaft getting longer or getting shorter?

    Hello,

    I have a very important Q. for my shelf. Does the flex shafts getting longer or getting shorter when in operation?
    On both condition how many mm. is the difference?
    Thanks in advance for answers.
    Regards
    Tags: None
    • TRUCKPULL
      Fast Electric Addict!
      • Apr 2007
      • 2971
      #2
      It gets shorter when running.

      As it was told to me many years ago.
      Shrinkage is about 1/8" per foot of length of the flex shaft.

      Larry
      Past NAMBA- P Mono -1 Mile Race Record holder
      Past NAMBA- P Sport -1 Mile Race Record holder
      Bump & Grind Racing Props -We Like Em Smooth & Wet

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        • grsboats
          Senior Member
          • Jul 2012
          • 975
          #3
          Reason you have to leave a gap of the same flex's diam between the strut and drivedog....i.e. about 3/16" for 3/16" flexshafts and 1/4" for 6,35mm shafts.
          GO FAST AND TURN RIGHT !
          www.grsboats.com.br

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