Civilian Lycoming R-680 (Half Cylinder and Front Exhaust)

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.   NOTE: Front Exhausts Were Only Found on Externally Mounted Engines or Planes that did NOT Have a Cowling. For Aircraft with Cowlings, Please Use the Half Cylinder or Full Cylinder Versions of this Product.   Commonly Found in Aircraft Such As: 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   -This Dummy Radial is Designed to be Hard Mounted on Your Models Firewall Using 30-min Epoxy. May also be Mounted Using Standoffs or Directly to the Cowling,  -Constructed with a Metallic Finish