Real performance measurement featuring in-flight testing

Article Abstract:

The Rev-Up 8 3/4-by-7 3/4 showed the best performance during testing, doing well in turns and showing speed during straight flights. The Nelson 40Q has too much drag, the Rev-Up 9-by-7 had problems with turns and the Master Airscrew 9-by-8 engine was too much ground load.

Nelson 40Q Quickie (Model airplane accessory), Rev-Up (Model airplane accessory), Master Airscrew (Model airplane accessory)

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Real performance measurement: Saito FA-50

Article Abstract:

The Saito FA-50 is a relatively large four-stroke engine that yields high horsepower without excessive noise. Its low stroke/bore ratio of .812:1 seems to make it perform like a two-stroke engine. It appeared to work best with APC props.

Internal combustion engines, Saito FA-50 (Model engine and motor)

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Real performance measurement: Enya .60XF-4 G8 ring

Article Abstract:

The Enya 60 XF-4 G8 ring is an aluminum-chrome engine for a sport and scale planes. It is a well-built engine that is reliable and performs well with both heavy and light loads.

Enya .60 XF-4 G8 ring (Model airplane accessory)

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