The best reference I know for information on tapers is the book
_Machinery's Handbook_ that has been published in consecutively numbered
editions since early in the last century.  There are dozens, if not
hundreds, of  "standard" tapers.  Many of them were developed and
promoted by particular machine tool companies.  (It reminds me of the
current camera flash memory situation.)

A taper that might be appropriate for this application is the taper that
Continental used on the range of air cooled Standard Military Engines
that they developed during the 1960's for general purpose military use.
It is 0.200 inches/inch or about 11.3 degrees.

Aubrey

Thanks Aubrey,  good feed - back!
That's close to 1/4" to a foot, which is also a common sized taper,
mentioned on the Internet.
George ( down under)

Tapers used on ROTAXES are 10:1 at 30MM. Never heard of one coming off. I am
flying a ROTAX redrive on a SOOB on my AVID. Had problems with the input
spline, but never with the taper. I also made the same taper on the motor
adapter to the donut dampener.
All the power take off on the single-rotor are that taper. Have to
frequently disassemble the joins on the test stand, and never had a problem.
One comment of caution, always use an appropriate puller for removal, jury
rigs will destroy it most of the time.

Richard Sohn
N-2071U



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