Engine testing was performed at
Radio Control Specialties facilities, in San Diego California. O.S. Max,
Thunder Tiger, HPI and Campanuchi engines were tested to provide a wide cross
section of the most popular, as well as the largest diversity of engines
including 2-stroke, 4-stroke, bearing and bushing supported crankshafts, ABC,
Schrurnle ported, ringed and non-ringed, multiple cylinders, and Wankel rotary
engines. Car, plane and helicopter engines were all included among the
selection. All engines were "broken-in" as directed by the
manufacturer. 15% Powermaster, 20% Blue Thunder, 15% Hobby Shack's White
Lightning and 20% Odonnell Racing fuel were used for all the tests.
For each of the engines, a 10 oz tank of fuel was used for each of the data
series. After it was determined that each of the engines were running within
normal operating parameters, values were measured that included: idle rpm, idle
temperature, full throttle rpm, full throttle temperature, full throttle thrust
(in lbs.), air temperature, time to burn 1 oz. fuel (idle and full-throttle)
and needle-valve settings. Each series of tests was performed five separate
times to provide average values. On engines without a mechanical idle stop, the
lowest idle that could recover to full throttle was measured.
After values were established, each engine was run with 30 oz. (three
tanks) of treated fuel to condition the engine. The same tests were then
repeated and values recorded after needle valve adjustments to maximize
performance. All statistics were documented and charted to outline the
performance gains.
 The Break-In |
 Checking Baseline Values |
 A new 4-Stroke ready to go |
 Testing run time for one ounce |
 The bench |
Typical Engine Testing
Testing equipment includes:
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