Half size Sparta Economy Engine

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D and D

Active Member
Joined
Jul 24, 2022
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Location
Nowra NSW Australia
Half size Sparta Economy Engine. Built from castings from the Engineers Emporium.

Muti purpose farm engine. Hit and Miss Governor. These we sold in Australia under the “EMU” brand.

Bore: 1 21/32 “ (1.65”)

Stroke: 2 7/8 “ (2.85”)

Displacement: 6.09 Cubic Inches ~100cc

Compression Ratio: ~ 5 to 1

Valve timing: Exhaust valve starts to open 40° before bottom dead centre and closes 5° after top dead centre. Inlet valve is automatic (Vacuum).
 

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