The CISON LS-52 1/5 scale 52cc OHV V8 represents a major leap forward in miniature internal combustion engineering. Here are the six technical advances that separate the LS-52 from earlier scale V8 models:
1. True 52cc Displacement (8 × 6.5cc Cylinders)
With a 20.0mm bore and 20.5mm stroke across eight cylinders, the LS-52 delivers deeper exhaust resonance, stronger low-end torque, and approximately 6 PS of mechanical output.
2. Drilled Crankshaft with Independent Oil Lubrication
Rather than relying solely on fuel-oil mist, the LS-52 incorporates drilled internal oil passages through the 5-bearing crankshaft journals to lubricate the connecting rod bearings directly.
3. Real-Time MCU Digital Ignition
Replacing traditional mechanical distributors that suffer from contact bounce at high RPM, the microcontroller ignition dynamically advances spark timing up to 12,500 RPM.
4. Integrated Block Water Pump
Coolant circulates directly through internal block passages without external hose clutter, keeping cylinder head temperatures stable during extended bench runs or RC chassis operation.