Triumph engine and frame dates

                                  3 ½ and 4 hp engines

Year           engine finished at           frame finished at           

1906                999                                   

1907                2200                                  126700

1908                4212                                  138890

1909                       7822                                  151800

1910                11415                                155374

1911                16852                                190327

1912                22913   commenced with 190328 and continued to 196100    ( *1  )         

1913                29348                                219730

1914                37529 &37533 to 558       262338

1914            then to 37565 to 666                    

1915            41560                                266200

1916            47140                                274600

1917            52980                                280540

1918            59300                                286950

1919            67150                                289850 and 301978 to 306470

1920            74244                                313732

1921            80067                                319672

1922            84673                                324136

*1  no 196107 to 211407 are pedal cycle frame numbers

                          Baby triumph 2 ¼

1913            109                                  194877 to 194883

1914            790                                  256191 to 256878

1915            1885                                256879 to 257970

1916            2487                                257971 to 258534

1917-18       2620                                258535 to 258726

1919            3660                                258727 to 259534

1920            5928                                259535 to 600475

1921            7896                                600476 to 602561

1922            8364                                602562 to 603029

Crankcase number system to end 1923

CRANKCASE NUMBERS AFTER 1924

IF YOU HAVE ANY BETTER IDEA’S WE WILL ALWAYS LISTEN OR OTHER WISE SEND YOUR CRANKCASE NUMBERS AND DATES AND WE WILL FILL IN THE BOXES SOONER OR LATHER.

We prefer to share what we have then keep it to our
self’s like some one else out their Mr PC!!

THANKS THIS IS FOR REFERENCE ONLY 

If you have any information for the dating please help us to help you and email us your     information plus any other information like Bosch magneto dates, gearboxes etc

      We have a triumph letter staying that after engine number 220001 , gearbox number           120001 and  frame number 920001 all model P,s where fitted with internal expanding front       brakes .

Bosch magneto numbers

This listing has been produced from information supplied by Reg Ingold in Australia.
A few numbers are not that clear, so a stab at the correct number has been made, corrections would be welcome!

Bosch Magnetos
Year	Serial
1902	14147
1903	24131
1904	42571
1905	75753
1906	123210
1907	185329
1908	251268
1909	434566
1910	646345
1911	933508
1912	1335331
1913	1567965
1914	1758030
1915	1798093

Sturmey -Archer gearbox numbers to approx half a year.

 
CS Gearbox 3 speed medium weight

Ls Gearbox 3 speed prefixes LW or HW

Types III and IV ¾ speeds improved LS type no data

TS Gearbox 2 speed lightweight

Bs Gearbox 3 speed light weight

FW gearbox 3 speed improved

BW gearbox 3 speed medium weight

MA Gearbox modified LS type special to Raleigh 

Most numbers are correct to half a year.  

Many thanks to John Diamond for the records.