Attached is an E Mail regarding the recent problems with my starter
and starter adapter problems. It is for informational purposes
only. I am incorporating the text as written.

Begins Here

The attached pictures are really scary! The clutch spring wrapped
down around the gear shaft as a result of a kick-back on start up.
This shaft rotates at 6,000 RPM all the time you are flying. It
heated up to over 1800 degrees F, melting the brass gear.
You advised that you had an earlier kick-back that failed your
starter adapter causing you to replace it with this one. It's too bad
the installing A&P didn't investigate the cause of the earlier kick-
back / starter adapter failure. I haven't seen your core yet but I
would guess the spring will be wrapped down around the gear shaft as
a result of the kick back you described.

My experience has been that this is the result of faulty / possibly
mis-wired "shower of sparks" magnetos or a faulty / worn out starter
switch that fails to isolate the magneto points that fire the
magnetos at 22 degrees BEFORE top dead center. The starting position
on the starter switch should activate a second set of points that
activate the shower of sparks at top dead center, avoiding the kick-

You mention that you have a Sky-Tec starter. I doubt that it caused
this damage but if it is an ST-1 Sky-Tec starter, remove it
immediately. It will not let the starter adapter clutch spring
release and will wear out the starter adapter in as few as 150 hours.
If you have an ST-3 Sky-Tec starter, check to see if it still spins
freely before reinstalling it. If it rumbles or doesn't turn freely,
get rid of it too. It will only last 100 hours before the internal
needle bearing jams and wears out the starter adapter.

The only starter to use right now is a freshly serviced Delco or
Prestolite. They will let the starter adapter clutch spring release.
Try Modified Aircraft Accessories in Brooks Kentucky (a little Ma /
Pa shop) for the best unit he even breaks them in! (502) 957-6312

Ronald Newburg, President
Niagara Air Parts, Inc.
2221 Niagara Falls Blvd
Niagara Falls, New York
Tel: (800)565-4268

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