105HZ Heli Engine

This is the 105HZ 1.05 cu in Helicopter Engine from O.S. Engines.        
                                                                               
FEATURES: Same mounting dimensions as a .90 cu in engine                       
          Machined blue anodized aluminum heatsink cylinder head               
          Velocity stack increases airflow and enhances engine performance     
          Backplate accepts the Futaba BPS-1 RPM sensor for the GY701 and      
            CGY750 gyros                                                       
          Ideal bore and stroke ratio for lowest vibration                     
          Two year limited warranty through Hobby Services beginning at date of
            purchase                                                           
                                                                               
INCLUDES: 105HZ 1.05 cu in Helicopter Engine with 61E Carburetor               
          #8 Glow Plug                                                         
          Air Funnel                                                           
          0.1mm Head Gasket                                                    
          0.2mm Head Gasket (installed)                                        
          Instruction Manual                                                   
                                                                               
REQUIRES: Fuel: Heli blend with 15% nitro content                              
          Glow starter and field equipment                                     
                                                                               
SPECS:    Displacement: 1.048 cu in (17.17 cc)                                 
          Bore: 1.142" (29mm)                                                  
          Stroke: 1.024" (26mm)                                                
          RPM Range: 2,000 - 16.500                                            
          Output: 3.7 ps @ 15,000 RPM                                          
          Weight: 21.03oz (596g)                                               
          Crankshaft Size: UNF 5/16-24                                         
          Carburetor Settings;                                                 
            High Speed Needle Valve: Approx. 2 turns open from fully closed    
            Medium Speed Needle valve: 1 turn open from fully closed           
            Idle Mixture Control Screw: At basic position when engine left     
             factory                                                           
          Distance/Center of Mounting Holes Same Side: 0.98" (25mm)            
          Distance/Center of Mounting Holes Opposite Side: 2.04" (52mm)        
          Crankcase Width Below Mounting Tabs: 1.7" (43mm)                     
          Crankcase Width at Mounting Tabs: 2.4" (61mm)                        
          Width from Throttle Arm to Center: 1.6" (42mm)                       
          Height from Bottom of Mounting Tabs to Cylinder Head: 3.1" (79mm)    
          Height/Bottom Mounting Tabs to Muffler Mounting Holes: 1.7" (42.8mm) 
          Height/Bottom of Crankcase to top of Cylinder Head: 3.9" (99mm)      
          Length from Backplate to Front Bearing: 3.2" (82.6mm)                
          Length from End of Crankshaft to Center of Engine: 3.5" (88.7mm)