After the reverse-shift pattern dynamometer disaster and rebuild efforts we decided to conduct future performance testing ourselves. Smitty created a power-absorbing unit that uses a spare rear wheel attached to a large brake assembly. To gather engine performance data, the operator needs to balance the force of The Red Baron powering the rear wheel with … Continue reading Performance Testing with a Power-Absorber
Leak-down test & pressure-loss calculation
When turning the crankshaft on an internal combustion engine, you can feel an increase in resistance caused by generating a vacuum or building compression when the valves are closed. This indicates that the piston rings are holding a seal with the cylinder walls. Smitty noticed that we were not holding compression pressure, particularly in the … Continue reading Leak-down test & pressure-loss calculation