Shaft length for a 20″ transom

  • 123
    northern illinois
    Posts: 55
    July 25, 2013 at 8:10 pm #1239452

    Probably an obvious answer; but I have a 16′ alumacraft with a 20″ transom. The Yamaha t9.9 comes in a 20″ or a 25″ shaft. I say the 25″ am I right? Just need to know before I buy. Thanks in advance. H

    hunter1723
    Posts: 349
    July 25, 2013 at 9:42 pm #1185729

    use the 20″. It is a long shaft

    bclii
    MN/AZ
    Posts: 478
    July 25, 2013 at 9:45 pm #1185731

    20″! The 25″ will drag in the water while running main motor.

    123
    northern illinois
    Posts: 55
    July 25, 2013 at 10:02 pm #1185738

    Sorry I should have been more clear; this will be the main motor

    castle-rock-clown
    Posts: 2596
    July 26, 2013 at 1:25 pm #1185826

    On a 20″ transom the motors having 20″ shafts are the proper choice. 15″ shafts go on 15″ transoms and 25″ shafts go on 25″ transoms. Look up the motor you are intending to buy on boats.net there will be specs as to the intended applications including transom heights.

    123
    northern illinois
    Posts: 55
    July 26, 2013 at 2:29 pm #1185843

    Right on; thanks for the info
    H

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