This is the OS Engines 15LA. It comes
supplied with the 10G carburetor.
Characteristics:
More cooling fin area extends the life of the engine, and virtually
eliminates engine seizures in the air
Added "webbing" on the crankcase strengthens high-stress areas to help
ensure that they stand up to the rigors of learning to fly
Overall tighter needle valve fit utilizes an "O" ring to help maintain
the performance levels you need
A fuel inlet that points up allows for easier fuel line access for
fueling and defueling