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Lycoming R-680

1920s American aircraft piston engine

Field	Value
name	R-680
image	Lycoming R-680-BA Aircraft Engine.jpg
caption	Lycoming R-680
engine_type	Piston aero-engine
manufacturer	Lycoming Engines
national_origin	United States
first_run	1929
major_applications
produced	1930–1945 out of production
number_built	over 26.000

The ** Lycoming R-680** is a nine-cylinder air-cooled radial engine, the first aero engine produced by Lycoming. The engine was produced in two types, the E and B series; both are essentially the same. The B4E was available in a trainer version with a front exhaust collector "ring" for use without cylinder air baffles. R-680 received Approved Type Certificate No. 42 on 4 Feb 1930.

Variants

;R-680 :Rated at 210 hp at 2,000 rpm. ;R-680B4E :Rated at 225 hp at 2,100 rpm. ;R-680BA :Rated at 240 hp ;R-680E3A :Rated at 285 hp at 2,200 rpm. ;R-680-6 :Rated at 245 hp ;R-680-9 :Rated at 300 hp at 2,200 rpm. ;R-680-13 :Rated at 300 hp at 2,200 rpm.

Applications

Beech AT-10 Wichita
Boeing-Stearman PT-13
Cessna AT-8/AT-17
Curtiss-Wright AT-9
Fleetwings BQ-2
Spartan NP-1
Stinson Airliner
Stinson Reliant
Stinson L-1 Vigilant
Waco S Series

Specifications (R-680-E3A)

and start a new, fully formatted line with -- |power/weight=0.64 hp/lb (1.05 kW/kg)

References

Notes

Bibliography

References

Bridgman 1988

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

1920s-aircraft-piston-engines aircraft-air-cooled-radial-piston-engines lycoming-aircraft-engines

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