I have a medium size prop pitch (about 9" or 10" in diameter) with a 4"
diameter (to
the outside of the splines) splined output drive cylinder with 40
teeth/splines. The
beveled gear that normally fits over this splined drive cylinder has been
removed.
Because a pipe fitting has been welded into the hollow middle of the drive
cylinder,
I am unable to insert a standard M2 mast clamping assembly into the INSIDE
space of
the drive cylinder.
So...my next option is to try to find a bevel gear fitting that will key into
the
splines around the OUTSIDE of the 4" diameter drive cylinder. (It is my
understanding that the typical prop pitch bevel gears are at the top of a sleeve
that fits down over the vertical splines of such a drive shaft.) Then I can
weld a
plate to the top of that fitting, and install mast clamps onto that. Since I am
turning a 6m EME array with this motor, I want to make sure I have as good a
grip on
the mast as possible, which is why I am trying to solve the problem with a
secure
clamping system solidly anchored to the motor, rather than just using a bolt
through
the mast and plumbing fitting (as it appears some folks with smaller antennas
have
done successfully in the past).
If anyone has an unused bevel gear fitting from such a prop pitch, I sure would
appreciate hearing from you! MNI TNX and 73, Lance
Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8)
P.O. Box 73
Frenchtown, MT 59834 USA
QTH: DN27UB
TEL: (406) 626-5728 FAX:(406) 728-6320
URL: http://www.bigskyspaces.com/w7gj
List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
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