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  1. #1
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    Hub walk, explain this...

    Check this out...

    Repitching 2 props for a forum member tonight, and I noticed the hub on one of the props has walked up .

    Both props are 15/20's, one is brand new out of the box while the other is a used unit. The used one had been repitched several times, about 5mm difference in blades between the two. It was also ridden HARD, with burn marks evident from a stainless wear ring. According to the owner the use prop was run without a nose cone...

    So I measure the depth of the spline shaft in the hub, over a 6.1mm difference ...I tried to press the splines down, and even after heating the hub up REALLY HOT, my little 6-ton press still could not budge it. Even started to bend the plate it was resting on
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  2. #2
    Yellowsierra's Avatar
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    It looks like the external spline is threaded into the prop. That might be why you couldn't press it in any. They probley screw it in with locktite.


    Justin

  3. #3
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    Quote Originally Posted by Yellowsierra View Post
    It looks like the external spline is threaded into the prop. That might be why you couldn't press it in any. They probley screw it in with locktite.


    Justin


    If thats the case, why is the area underneath the walk'd one smooth? I need to get this confirmed...

  4. #4
    Matthew K ReDevilRXP's Avatar
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    Quote Originally Posted by Danny View Post
    If thats the case, why is the area underneath the walk'd one smooth? I need to get this confirmed...
    It might not be threaded all the way down. And since those are left hand threads with the way the prop spins from the motor its actually loosening it..... so its a possibility i guess

  5. #5
    jpeconsult's Avatar
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    Quote Originally Posted by Danny View Post
    Check this out...

    Repitching 2 props for a forum member tonight, and I noticed the hub on one of the props has walked up .

    Both props are 15/20's, one is brand new out of the box while the other is a used unit. The used one had been repitched several times, about 5mm difference in blades between the two. It was also ridden HARD, with burn marks evident from a stainless wear ring. According to the owner the use prop was run without a nose cone...

    So I measure the depth of the spline shaft in the hub, over a 6.1mm difference ...I tried to press the splines down, and even after heating the hub up REALLY HOT, my little 6-ton press still could not budge it. Even started to bend the plate it was resting on
    Something else learned... Thanks Danny

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