Honda’s FI-Two stroke engine

Two-strokes are far simpler machines than four-stroke engines. They’re also lighter, easier to work on, and downright angrier, pumping out a lot more power per cubic centimeter of displacement, which has won them a lot of fans. But they’ve had a reputation for belching out a fair bit of smoke and unburned fuel, a situation that just couldn’t fly alongside tightening emissions regulations around the … Continue reading Honda’s FI-Two stroke engine

Yamaha Tx-750(2 stroke)

The TX750 was a YAmaha motors made in 1973 and 1974. It was loosely based on the XS650 but had what Yamaha called an “Omni-Phase balancer” to counter vibrations which are inherent in a parallel twin with the crankshaft set at 360 degrees(both pistons rise at the same time). Using a pair of balancers (one to stabilize the imbalance of the cylinders, the other to counter the rocking caused … Continue reading Yamaha Tx-750(2 stroke)

Lanchester Twin crank concept

A contra-rotating twin crankshaft system for internal combustion engines. Two crankshafts are arranged in parallel, and are connected together to rotate in opposite directions. At least one piston is spaced from the crankshafts. Connecting rod assemblies extend in a crossed relationship from each crankshaft to two spaced wrist pins at the piston. Preferably, one connecting rod assembly is made up of two spaced connecting rods … Continue reading Lanchester Twin crank concept