Rudder Shear Bolt Works

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  • Drag Boat Bob
    Senior Member
    • Apr 2009
    • 304

    #1

    Rudder Shear Bolt Works

    I had just got started on testing lubricants when during a run I hit a USO. What ever it was it was solid. The Kintec nylon shear bolt in the rudder worked as designed (thanks Jan!). Only the bolt head remained.

    When I got the boat back to shore I could hear something rolling around inside. When I opened her up, to my surprise it was one of the motor mount bolts (the one that I did not replace with a 4mm one).

    Evidently I stripped the bolt hole in the motor, (when replacing the motor) after drilling out the opposite hole. This happened even though I was VERY careful. These bolt holes are not correctly threaded for this motor.

    If anyone strips one of these bolt holes, I suggest to drill/tap BOTH to 4mm.

    Looks like I have some work to do before I can continue...
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