Mailing List flyrotary@lancaironline.net Message #235
From: Tracy Crook <lors01@msn.com>
Sender: Marvin Kaye <marv@lancaironline.net>
Subject: Re: [FlyRotary] Re: dynamic balancing
Date: Sat, 12 Oct 2002 18:48:08 -0400
To: <flyrotary>


>   Be advised that just  ballancing
> > the prop end to end is a waste of time.  It must be ballanced chord-wise
> as
> > wel, and this is where I have seen the biggest imballance.
> >
> > Tracy
>
> Tracy, what kind of a fixture do you use to balance chord-wise? I have a
> shaft on bearings for span wise but can't visualise doing it in the other
> direction.
> Peter
>
I machined a cone in a dowl that is a light press fit in the center hole of
the prop.  I then ballance the prop on a pointed rod (held vertical in a
vise) in the center of the machined cone.

A sensitive round bubble level (like those on a transit) indicates the
direction and amount of imballance.  I use weights rivited to the spinner
backing plate to ballance the whole assembly.

Tracy

>

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