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O.S. - OSMG2041 OSM13880 13880 531028021556 4531028021556
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O.S. 21XZ-R Speed On-Road Engine
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O.S. 21XZ-R Speed On-Road Engine
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Tech Notes
          This is the O.S. 21XZ-R ABC Engine with 21M Carburetor
                        for 1/8 scale On-Road Vehicles.

****** Because of the expressed racing nature of this engine, ****** ****** it is NOT covered by the O.S. 2 Year Warranty ****** ****** per page 8 of manual. ******

FEATURES: Tungsten-weighted silicone filled crankshaft creates optimum balance for consistent low and mid speed torque, DLC (Diamond-Like Carbon) coating for reduced friction and enhanced performance ABC piston and liner construction "A"luminum piston fitted to a "B"rass cylinder liner that is "C"hrome plated Liner has seven scavenger ports and three exhaust ports for more efficient combustion 21M slide valve carburetor with 9mm carb reducer that restricts the airflow helping to increase the amount of torque produced

INCLUDES: O.S. 21XZ-R ABC On-Road Engine w/21M Carburetor, Exhaust Gasket RP7 Turbo Glow Plug, 9mm Carb Reducer, Flywheel Collet, Instruction Manual, 0.2mm Head Gasket and two Dust Caps

REQUIRES: Fuel: 10-30% nitro content, 20% recommended for break-in Exhaust System: Depending on vehicle Glow starter, fuel tubing and track equipment

SPECS: Displacement: 0.213 cu in (3.49 cc) Bore: 0.640" (16.27 mm) Stroke: 0.661" (16.8mm) Practical RPM: 4,000-45,000 Power Output: 2.8 PS, 2.76 HP 33,000 RPM Weight: 12.1oz (343g) Distance Between Mounting Holes Same Side: 0.83" (21mm) Distance Between Mounting Holes Opposite Side: 1.45" (37mm) Height Bottom of Mounting Tabs/Top of Cylinder Head: 3.10" (78.8mm) Width of Mounting Tabs: 1.8" (45mm) Distance from Backplate to Front Bearing: 2.6" (65.6mm) Distance from Center of Crankshaft to Front Bearing: 1.7" (44mm) Distance from end of Crankshaft to Backplate: 3.7" (95.1mm) Carburetor Settings, Needle Valve: Approximately 3 turns open from fully closed Throttle: Approximately 0.5mm open from factory setting with reducer removed Metering Needle: Rotate until slotted head is 0.5mm away from ball link body Mixture Control Valve: Rotate until slotted head is flush with carb body

jxs 08/05/11 ir/jxs

– If you need more information, use these O.S. resources –
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Accessories Needed
This is the O.S. 21XZ-R ABC On-Road Engine with 21M Carburetor. FEATURES: Tungsten weighted silicone filled crankshaft, slide valve carb with 9mm reducer for higher torque, RP7 turbo glow plug and instruction manual REQUIRES: Fuel, air filter, exhaust system, track equipment

Accessories for the O.S. 21XZ-R Speed On-Road Engine

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 LXRXC9 Tower Hobbies TOWER Power 20% Car Fuel Quart
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