Other Propellers certified for Ercoupes

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The Aeromatic prop is certified for Ercoupes on a C75 or C85 engine installation. Due to its design it should give you an advantage in climb and cruise performance at the same time.

Here a Flight test with a C-75 engine and a Sensenich wooden propeller to compare.

COMPARATIVE FLIGHT TEST - KOPPERS CO. May 1, 1947 Aeromatic Propeller model F200 with 00-73E blades.

Ercoupe 415 C

Maximum speed not exceeding Rated Engine RPM

Altitude 1000 ft.   Fixed Pitch Aeromatic RPM 2275 2270 Speed, MPH 105 117 Improvement   11.4% Altitude 3000 ft.   Fixed Pitch Aeromatic RPM 2275 2275 Speed, MPH 100 110 Improvement   10% Altitude 5000 ft.   Fixed Pitch Aeromatic RPM 2275 2150 Speed, MPH 97 104 Improvement   7.2%

Cruising Performance at 2100 rpm

Indicated AirSpeed

Altitude	Fixed Pitch	Aeromatic	Improvement
1000 ft	95 mph	100 mph	5%
3000 ft	90 mph	100 mph	11.1%
5000 ft	85 mph	100 mph	17.6%

Climb Performance@ 1260# GTOW

	Fixed Pitch	Aeromatic	Improvement
First minute climb, fpm	660	800	21.2%
RofC @ 3000 ft.	510	530	3.0%
RofC @ 5000 ft.	355	360	1.4%

Signed by H. R. Ulrich of Koppers Aeromatic Propeller Dept.