History The PRD Fireball 125cc engine was designed by the renowned Australian Peter R. Dell of Pro Racing Design Company Ltd. The PRD Fireball is maufactored at Dell’s Taipei, Taiwan factory where he personally directs operations. Originally introduced in 2004, the PRD Fireball has seen several improvements, which includes a new clutch design, a coated piston and an improved radiator with mounting hardware. Other upgrades to the engine are a new rod, head, battery mount, as well as a CNC machined liner and starter relay.
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MODEL - RK125W07 TAG TYPE -
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2 STROKE WATER COOLED SINGLE CYLINDER REED VALVE INDUCTION CAPACITY -
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124cc BORE - 53.70 ( FIRST PISTON 53.60) STROKE - 54mm
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H.P./RPM - 28H.P./15,800RPM
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22H.P/ 11.000 R.P.M. -Marine Version
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CARBURETOR - TILLOTSEN HL-360A
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IGNITION - C.D.I (OPPAMA) IGNITION TIMING -
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2.20mm BTDC [STANDARD] SPARK PLUG - NIPPON DENSO W27ESU [RUN IN ONLY] W29ESU [RECOMMENDED RACING] SPARK PLUG GAP - 0.60mm [0.024"]
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FUEL OIL RATIO - 16:1 PREMIUM GRADE UNLEADED PETROL PISTON TYPE -
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COATED PISTON PISTON CLEARANCE - 0.10mm[STANDARD]
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RING TYPE - DYKES STYLE (L RING)
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RING GAP - 0.25mm [0.010"]MIN. CYLINDER
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HEAD VOLUME - 10.2cc 12.1 cc - Marine Version
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COMPRESSION - 13 : 1 10 : 1 - Marine Version
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CRANKSHAFT - 2 PIECE,FORGED & INDUCTION HARDENED
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CONROD 100mm STEEL CNC MACHINED
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