Chronology of side pull brakes Normal Reach w/No lettering on arms Normal Reach w/Block lettering Brev.Inter. Short Reach W/Block lettering Brev.Int.& rubber bumper Normal & Short Reach W/Script letters Normal & Short Reach W/Script letters & Anniversary profile Or something to that effect. My question is regarding the frame types that needed the different arm lengths for brakes to function properly. What are the determining factors other than actual dimensions? Any general rules of thumb? Like year made/country of origin/ manufacturer/wheel-rim combination. Nick Zatezalo COLD WET Atlanta,Ga