High performance chosen by the world champion.
Davide Ongaro, the winner of the IFMAR 1/8 Engine Off-Road World Championship, has signed with O.S. SPEED since 2021. This engine, the "O.S. Speed B21 Ongaro Edition", has been created to match his requirements!
Based on the latest off-road engine (O.S. SPEED B2104), the crankshaft has been changed to a counter web shape and uses a single tungsten weight that has been specially made for this engine to suit his driving style. The inner head also has a specially designed combustion chamber, and the effects of these changes give a smooth driving feel and a more powerful top end. In addition, the outer head adopts a standard round type, and the laser marking of Ongaro's original logo mark.
A new size Ø5.8mm / Ø6.3mm black anodized restrictor is also used for the carburettor to create an "Engine that can win big races" that matches his requirements.
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Weight
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352g (12.42 oz)
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Displacement
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3.49cc (0.213 cu.in.)
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Bore
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16.27mm (0.641")
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Stroke
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16.80mm (0.661 in.)
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Power Output
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2.68 ps (2.64 hp) @ 34,000 rpm
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Practical RPM
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4,000 - 42,000 rpm
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- Brand: OS Engines
- Part No: L-OS1DL00
- Displacement: 3.5cc (0.21ci)
- Starter: Flywheel Start
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