APC - APC Folding Prop Hub 50MM - APCFH4

        This is the 55mm Folding Propeller Hub for a 45mm Spinner from         
                        Advanced Precision Composites.                         
        For use on Electric powered aircraft only (not for gas engines).       
                                                                               
FEATURES: Two-piece, gray composite propeller hub that goes on each side of    
            the folding propeller blades to hold them in place (blades are not 
            included, see REQUIRES)                                            
          Hub has molded nut insets for easy tightening                        
          Comes in a bag attached to a header card                             
                                                                               
INCLUDES: One composite propeller hub                                          
          Two 3x10mm cap head screws                                           
          Two 3mm nuts                                                         
          Two 3mm washers                                                      
                                                                               
REQUIRES: Propeller blade sets (use APCQ4305 through APCQ4360)                 
          2.5mm hex wrench (GPMR8012) to tighten cap head screws               
          Hand and eye protection when operating propeller                     
                                                                               
SPECS:    Overall Length: 63mm                                                 
          Length between blade mounting centers: 50mm                          
          Inner mounting diameter: 8mm                                         
                                                                               
COMMENTS: See propeller blades for assembly instructions.                      
          Sailplanes have no landing gear, and therefore would break a rigid   
            propeller when the plane came in for a landing. The folding        
            propeller folds back upon landing.                                 
          The use of this hub will shorten the overall diameter of the prop    
          by 10mm from the manufacturer's length listing.