Hi John,
With your rotor mounted in the correct position on the lower shelf, and the
upper shelf bolted up, take your bearing and place it on the shelf. Insert
your mast through the top tube of the tower, through the bearing and into
the rotor mount. Snug up the rotor clamps slightly and then go up and trace
the holes for the bearing mount on the shelf. Remove the mast and shelf and
drill out the holes.
7 3, Tom K3GM
>
> I'm planning to install a TB3 below the top of the rocket type top
> section on my 25G tower. It appears I need to drill four new holes (why
> don't they pre=drill these for the TB3?) in the accessory shelf to bolt
> it in. Anyone tried this before? I'm envisioning a somewhat critical
> process to get the four holes exactly placed, and would appreciate any
> helpful hints. My initial thought is to select a drill bit that's one
> size larger than the bolt, in case I have trouble with exact placement
> using only a hand drill. If there's a simple solution to achieving
> acceptable accuracy, I'd sure like to know about it. Please reply to me
> directly. Thanks
> John K4IQ
> jbmitch@vt.edu
>
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>
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