O.S. Engine Speed Tuned B21 Adam Drake 1/8 scale buggy/ Truggy

$ 799.99 $ 519.99
$ 799.99 $ 519.99
35% OFF
Weight 2 lbs

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                  This is the O.S. Engines Speed Tuned B21                    
        Adam Drake Limited Edition 1/8 scale Buggy and Truggy Engine.          
     ****** Because of the expressed racing nature of this engine, ******      
     ******     it is NOT covered by the O.S. 2 Year Warranty      ******      
FEATURES: Exhaust timing is 2 degrees higher than previous B2101 for greater   
            top speed                                                          
          21J3(B) slide valve carburetor with 6.5 and 8mm Carb Reducers        
            suitable for buggy and truggy use                                  
          Silicone filled crankshaft with DLC (diamond like coating) with      
            two balanced tungsten weights and optimal intake timing for a      
            smoother power transition from low-mid-high speeds                 
          Special cylinder head in black with Adam Drake graphics in white     
          Newly designed three-port cylinder liner                             
INCLUDES: Speed Tuned B21 Adam Drake Limited Edition Buggy and Truggy Engine   
          21J3(B) Carburetor with 6.5 and 8mm Carb Reducers                    
          O.S. Speed P3 Gold Glow Plug                                         
          3mm, 16mm and 18mm Dust Caps                                         
          Exhaust Seal Ring                                                    
          Instruction manual                                                   
REQUIRES: Glow Fuel: 10-30% nitro content, 20% recommended for break-in        
          Exhaust System such as the O.S. T-2090SC Tuned Pipe System           
SPECS:    Displacement: 0.213 cu in (3.49cc)                                   
          Bore: 0.646" (16.4mm)                                                
          Stroke: 0.652" (16.55mm)                                             
          Practical RPM: 4,000-42,000 RPM                                      
          Output: 2.65PS 34,000 RPM, 2.61HP @ 34,000RPM                        
          Weight: 12.45oz (353g)                                               
          Distance Between Mounting Hole Centers Same Side: 0.83" (21mm)       
          Distance Between Mounting Holes Opposite Side: 1.4" (37mm)           
          Mounting Hole Diameter: 0.12" (3mm)                                  
          Height Bottom of Mounting Tabs/Top of Cylinder Head: 3.2" (81.5mm)   
          Height Bottom of Crankcase/Top of Cylinder Head: 3.8" (97.1mm)       
          Width at Mounting Tabs: 1.8" (45mm)                                  
          Width of Crankcase Below Mounting Tabs: 1.2" (31.6mm)                
          Distance from Backplate to Front Bearing: 2.5" (64.5mm)              
          Distance from Center of Crankcase to Front Bearing: 1.7" (44mm)      
          Distance from Center of Crankcase to Backplate: 0.81" (20.5mm)       
          Crankshaft Size: UNF1/4-28                                           
          Crankshaft Length: 1.2" (29.5mm) from front bearing                  
          Carburetor Settings: NOTE carburetor is preset at factory and        
            requires only very small adjustments                               
            Needle Valve, 3-1/4 open from fully closed                         
            Mixture Control Valve, Flush with carburetor body                  
            Metering Needle, Flush with ball link body                         
            Throttle Stop Screw, Approximately 0.5mm                           
                                                                   jxs 02/08/18
BOX DIMENSIONS:    4.88" W. X   3.88" H. X   6.25" L.
BOX WEIGHT:    1.07 LBS.
  • Interior Features
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