View Larger Picture

E-mail This Page To A Friend

       This is the O.S. 21XZ-R ABC On-Road Engine with 21M Carburetor
                            for 1/8 scale Vehicles.

FEATURES: Tungsten-weighted silicone filled crankshaft creates optimum balance
            for consistent low and mid speed torque
          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

INCLUDES: O.S. 21XZ-R ABC On-Road Engine with 21M Carburetor, Exhaust Gasket,
            Instruction Manual

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

SPECS:    Displacement: 0.284 cu in (4.65 cc)
          Bore: 0.728" (18.5 mm)
          Stroke: 0.681" (17.3mm)
          Practical RPM: 4,000-38,000
          Power Output: 3.31 hp @ 32,000 RPM
          Weight: 13.1oz (375g)
          Distance Between Mounting Holes Same Side:
          Distance Between Mounting Holes Opposite Side:
          Height Bottom of Mounting Tabs/Top of Cylinder Head:
          Width of Mounting Tabs:
          Distance from Backplate to Front Bearing:
          Distance from Center of Engine to Front Bearing:
          Distance from Center of Engine to Backplate:
          Carburetor Settings:

                                                                   jxs 10/29/09



– If you need more information, use these O.S. resources –

Click Here: Manufacturer's Product Web Page
E-mail: enginesupport@hobbico.com
Web Site: http://www.osengines.com/
Phone: 217-398-8970


 
Postal Address:
O.S.
3002 N. APOLLO DRIVE, SUITE #1
CHAMPAIGN, IL 61822  








Click here for Units of Measure Conversion Calculators