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.
Drilling self-tightening props
- Thread starter HenryKisor
- Start date
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.
N017RW
Premium Pilot
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.
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.
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.
They appear for sale sporadically,one place and another.
It must be very precise or best leave them alone.
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.
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.
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