![BSA "Round Tank" Model B 1924 250cc 1 cyl sv BSA "Round Tank" Model B 1924 250cc 1 cyl sv]() 
                            
                        
                    
                    
                            
                            
                            Manufacturer: BSA
                            Model: "Round Tank" Model B
                            
                                
                                    Year:  1924
                                    Displacement: 250 cc
                                    Cylinder: 1  
                                    Engine type: 4-stroke / sv
                                    Bore / Stroke: 
                                    
                                     63 
                                     x 
                                    
                                    
                                     80 mm 
                                    
                                    
                                    
                                
                                
                                    Weight: 77 kg
                                    Top Speed: 72 km/h
                                    
                                    
                                    
                                    Frame number: B12252
                                    Engine number: B12650
                                
                             
                            
                                A top-selling model for BSA in the 1920s, the versatile Model B, or 'Round Tank', was used by just about every tradesman whose job required cheap personal transport. Popular with learners - the fact that the gearbox had only two speeds and that both brakes operated on the rear wheel were attributes guaranteed to re-assure novices - the reliable 250 sidevalve provided many with their first motorcycling experience. Advanced features, for a lightweight, included all-chain drive and pumped lubrication, though the traditional sight feed and auxiliary hand pump were retained. A three-speed version - identifiable by its black tank - was added for 1926 and then the following year a wedge-shaped tank replaced the much-loved original.
This particularly looking motorcycle is an older restauration and is fitted with acetylene lighting system, EIC magento, AMAC carburettor and a bulb horn.