New O.S. Engines R21 sport-level on-road racing engine

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By Aaron Waldron
LiveRC.com

New from O.S. Engines:
www.osengines.com

O.S. Engines R21 1/8 On-Road Club Racing Engine
#OSMG2032, $350

Premium power, entry-level ease.

Club racers rejoice! The R21 is based on the Championship heritage of the R2102 engine and delivers an unbeatable blend of power and value for 1/8 on-road racing. Its crankshaft and piston/liner are designed with premium performance and easy maintenance in mind, which makes it an ideal choice for beginners. This engine is upgradeable with high-performance O.S. Speed parts, letting you realize your full winning potential. High performance. Low price. That's what you can expect from the R21, only from O.S.

Features:

• The perfect power plant for rookies and club racers.
• Newly developed crankshaft and piston/liner with the capability to upgrade later to a Spec-class performer.
• RP7 Turbo glow plug.
• 8.5 mm carb reducer.
• Speed flywheel collet.
• Exhaust seal ring.
• Dust cap set.

Specs:
Displacement: 0.213 cu in (3.49 cc) 
Bore: 0.633 in (16.08 mm) 
Stroke: 0.677 in (17.20 mm)
Practical RPM: 4,000-44,000 
Power Output: 2.71 hp @ 32,000 rpm
Weight: 12.35 oz (350 g)
Includes: RP7 Turbo glow plug, exhaust seal ring, 8.5 mm carb reducer, dust cap set
Requires: Glow fuel, glow igniter, fuel filter, fuel bottle, starter and T-2080SC Tuned Pipe Set (OSMG2983)

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