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Hartzell Introduces Advanced-Composite Aerobatic Propeller for Extra 300 / 330 Applications

Former US Unlimited Aerobatic Champion Michael Goulian used an experimental development version of this propeller on his Extra 330SC during the 2009 airshow campaign

April 9, 2010 – Hartzell Propeller Inc. has developed
an advanced structural composite propeller for aerobatic aircraft using
its proprietary ASC-II technology. The new Claw 2.0™ propeller has
recently achieved FAA type certification, meeting all of the propeller
certification requirements. The original ‘Claw’ and the new Claw 2.0™
are the only certified advanced composite propellers available for
aerobatic use. The propeller has not yet been STC’d on the aircraft;
however Hartzell is making the Claw 2.0™ propeller available now for
Extra 300 / 330 series aircraft flying in the Experimental category.

Former US Unlimited Aerobatic Champion Michael Goulian used an
experimental development version of this propeller on his Extra 330SC
during the 2009 airshow campaign, for which he was recognized with
EAA’s Bill Barber Award for Airshow Showmanship. He was so pleased with
the new propeller’s performance that he will continue using it during
the 2010 air show season. 

He said, “I couldn’t be happier with my new Hartzell ASC-II Claw
2.0™ prop. It has displayed all the characteristics that made the
original Hartzell ‘Claw’ a market leader, but from a performance
standpoint, it has more pulling power at the low end. It also has a
more modern look. It is a natural and worthy stablemate to the ‘Claw’.”

“As someone who makes a living flying a high performance aircraft,
I need my prop to be safe and reliable 100% of the time. Hartzell was
always my choice, and with this new prop they haven’t let me down.” 

This latest model from Hartzell comprises a unique lamination of
carbon fiber and Kevlar™, with an electroformed nickel leading edge
erosion shield. The composite structure is co-molded on an integral
stainless steel shank that accommodates bolt-on counterweights needed
for aerobatics. 

The advantage of installing a certified propeller on “Experimental”
and homebuilt aircraft is that it has been rigorously tested according
to FAA standards, and users can be sure the propeller will withstand
all flying conditions. The Claw 2.0™ has passed all required
certification tests including bird strike, lightning strike and fatigue
strength. It has also passed a vibration stress test over the entire
aerobatic envelope on Goulian’s Extra 330SC.

Mike Disbrow, Hartzell’s senior VP marketing and customer services,
said, “The new ASC-II Claw 2.0™ prop is the perfect addition for
“experimental” pilots who like to push the limits of their aircraft’s
capabilities safely. Michael Goulian has shown that this prop can
perform under even the most extreme conditions.”

Hartzell’s kit for the Extra 300 / 330s includes the 3-blade
propeller and a carbon composite spinner at a special introductory
price of $21,900, with a three-year/ 1,000-hour warranty and 6-year/
1,000-hour TBO.

Hartzell Propeller Inc. is widely recognized as the leader in
advanced propeller design and manufacturing technology. The company has
recently developed the next generation of propeller designs based upon
innovative “blended airfoil” technology and is manufacturing these
blades on revolutionary machining centers to provide mission-optimized
performance for its customers. Hartzell traces its beginnings in 1917
to a business relationship with Orville Wright, and was founded on the
principal of Built on Honor – a tradition that continues today.