
BSA
Tank Numbers 

Over the years we
have collected a HUGE archive.
With this archive it's possible to find with the
frame number the original tank number your BSA had when it left the factory. 

With the frame number we can also calculate the
original Australian tank numbers for BSA's which they received on
arrival in Australia.


If you are
interested to find your BSA's original tank number just send an email with the
frame and engine numbers of your BSA to bsawm20@hotmail.com 



Factory supplied
tank numbers



Australian tank numbers
applied on arrival.


Tank
C numbers


All
vehicles used by the British army had an identification number.
Motorcycles had the prefix "C". At first the number had six
digits (C37xxxx) from whom the first two corresponded with the year
the motorcycle was manufactured. During the end of 1939 this number
changed to seven digits and from 1940 there was no connection anymore
with the year of manufacture. With the list below the tank C number
for KM20 and WM20 motorcycles can be calculated. This list is not
complete and has some irregularity's but it gives at least a fair idea
of what the C number may have been back then.
Motorcycles
that where totally rebuild where normally given a rebuild
identification number that started with C1400000.
Source:
British Forces Motorcycles


As can be
seen in this 1941 factory picture, the C number just fits between the front of the
tank and the tank rubber. The total length of the C number should be
about 23 cm or 9 inch. The digits itself should be 1,5" x
1".
There is no
universal way these numbers were put on the tank, even at the factory
the location could vary. When from about 1942 knee
rubbers were no longer fitted, the tank number moved a little to the back of the tank.


This number
has been made in photo shop with a total length of 23 cm with Arial
Bolt 600 pixel and looks pretty much the same as the tank number on
the picture above. 






Here a few
more pictures with C numbers in different locations on both petrol tank
and front number plate. There are pictures known were it can clearly be
seen that the tank numbers were painted by hand. 





