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Drilling self-tightening props

Discussion in 'Phantom 1 Help' started by HenryKisor, Jun 2, 2014.

  1. HenryKisor

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    I need to balance my 1.1.1 self-tightening props. I'm thinking of drilling a hole through the prop cap so that I can do the balance on a TopFlite balancer. Any downside to drilling those holes? I do have a drill press.
     
  2. HenryKisor

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    No answers, so I guess nobody's tried drilling the props yet. I have a chewed-up one and will try drilling that. Report to come.
     
  3. N017RW

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    Ok, I'll bite.

    I would think that you will need to be very precise in location and shape.

    Any misalignment will have you balancing eccentrically, which will be worse.
     
  4. 4wd

    4wd

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    You need a balancing rod designed for the job.
    They appear for sale sporadically,one place and another.
    It must be very precise or best leave them alone.
     
  5. npalen

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    I drill the prop hubs to 1/8" diameter while mounted on a lathe mandrel that has been machined in place to fit the bore of the prop. A center drill is also used to leave a precise taper in the nose cone for the aluminum centering cone on the prop balancer.
    I machine the mandrel to be a snug fit inside the prop bore and then hand press the prop on the mandrel to do the drilling.
    I realize not everyone has a lathe in their tool arsenal. Just passing along how I do it but, yes, it needs to very precise otherwise the "balanced" prop may be worse that it was before balancing.