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Product ID: OS12180
Manufacturer: O.S. Engines
ISBN: 4531028020917
O.S. Engines 12180 .21XZ-B ABC w/21J2 Carb.
REQUIRES SPECIAL ORDER. (available)
O.S. Engines 12180 .21XZ-B ABC w/21J2 Carb.
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FEATURES:
  1. Tungsten-weighted silicone filled crankshaft creates optimum balancefor consistent low and mid speed torque
  2. ABC piston and liner construction Aluminum piston fitted to a Brass cylinder liner that is Chrome plated
  3. 21J2 slide valve carburetor with 7mm carb reducer that restricts theairflow helping to increase the amount of torque produced
INCLUDES:
O.S. 21XZ-B ABC Off-Road Engine with 21J2 Carburetor, Exhaust Gasket, P3 Turbo Ultra Hot Glow Plug, 7mm Carb Reducer, Instruction Manual, 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: 4,000-40,000
Power Output: 2.55 hp @ 33,000 RPM
Weight: 12.52oz (362g)
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: 3.4 (86.3mm)
Width of Mounting Tabs: 1.8 (45mm)
Distance from Backplate to Front Bearing: 2.5 (64.5mm)
Distance from Center of Crankshaft to Front Bearing: 1.7 (44mm)
Distance from Center of Crankshaft to Backplate: 0.81 (20.5mm)

Carburetor Settings,
Needle Valve: Approximately 3.5 turns open from fully closed
Throttle: Approximately 0.5mm open from factory setting with reducer removed
Metering Needle: Rotate until slotted head is 1.5mm away from balllink body
Mixture Control Valve: Rotate until slotted head is flush with carb body

NOTE carburetor is preset at factory and requires very small adjustments

BOX DIMENSIONS: 4.88 W. X 3.75 H. X 6.25 L.
BOX WEIGHT: 1.13 LBS.
 
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List Price: $449.99
Price: $279.99

 
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