The shaft is made to run freely in the crankshaft bearing that was previously soldered in place.
A heavy flywheel, J, is now fitted to the inside end of the crankshaft.
This gear is in mesh with a fiber gear, keyed to the upper end of the crankshaft, with half the number of teeth.
In the Gnome motor the cylinders revolved and the crankshaft was stationary.
The crankcase was drilled to provide forced-feed lubrication to the connecting rod big end and crankshaft main bearings.
The crankshaft F passes through the crank case, the latter having suitable bearings G for taking care of the wear.
The piston pins were case hardened and ground and the crankshaft pins and journals were heat treated and ground.
In this rotary motor the cylinders and crankcase revolve about the crankshaft which is stationary.
After keying the flywheel to the lower end of the crankshaft, Charles and Frank decided to make an attempt to run the engine.
The motor is placed directly behind the operator, and the propeller is directly mounted on the crankshaft.