Rudge machine dating
Guide to dating using frame/engine nos– 1926 to 1939
Rudge frame & engine numbers by MODEL year. Note that MODEL years run from the end of July in the previous calendar year - e.g. A 1937 specification model could have left the factory between the 1st August 1936 and July 31st 1937.
| Rudge Engine & Frame numbering 1926-1939 | ||||||||
| Model | Frame Number from | Frame Number to | Engine From | Engine to | Gearbox from | Gearbox to | Notes | |
| 1926 | Standard | 9600 | 18456 | 31500 | 39499 | |||
| Sports | 9600 | 18456 | 31500 | 39499 | ||||
| 1927 | Standard | 18457 | 24375 | 39500 | 46000 | |||
| Special | 18457 | 24375 | 39500 | 46000 | ||||
| Sports | 18457 | 24375 | 39500 | 46000 | ||||
| 1928 | Standard | 24376 | 30939 | 46000 | 52000 | |||
| Special | 24376 | 30939 | 46000 | 52000 | ||||
| Sports | 24376 | 30939 | 46000 | 52000 | ||||
| Dirt Track | ||||||||
| 1929 | 250 SV | 30940 | 36641 | B/S | ||||
| 250 OHV | 30940 | 36641 | POY/S | |||||
| 350cc | 30940 | 36641 | 52000 | 57000 | ||||
| Ulster grand Prix | 30940 | 36641 | 52000 | 57000 | ||||
| Special | 30940 | 36641 | 52000 | 57000 | ||||
| Dirt Track | ||||||||
| 1930 | 250 SV | 36642 | 42995 | B/W | ||||
| 250 OHV | 36642 | 42995 | POY/W | |||||
| 350cc | 36642 | 42995 | 1 | 5100 | ||||
| Ulster grand Prix | 36642 | 42995 | 1 | 5100 | ||||
| Special | 36642 | 42995 | 1 | 5100 | ||||
| Dirt Track | ||||||||
| 1931 | 250cc | 42996 | 46500 | 1 | 600 | |||
| 350cc | 42996 | 46500 | 1 | 4900 | ||||
| Ulster | 42996 | 46500 | 1 | 4900 | ||||
| Special | 42996 | 46500 | 1 | 4900 | ||||
| 350 TT-Rep | 42996 | 46500 | ||||||
| 500 TT-Rep | 42996 | 46500 | ||||||
| Dirt Track | ||||||||
| 1932 | 250cc | 46501 | 49700 | 601 | 1300 | |||
| 350cc | 46501 | 49700 | 4901 | 7400 | ||||
| Ulster | 46501 | 49700 | 4901 | 7400 | ||||
| Special | 46501 | 49700 | 4901 | 7400 | ||||
| 250 TT-rep | 46501 | 49700 | RL60 | |||||
| 350 TT-Rep | 46501 | 49700 | ||||||
| 500 TT-Rep | 46501 | 49700 | ||||||
| Dirt Track | ||||||||
| 1933 | 250cc | 49701 | 52195 | 1 | 700 | |||
| 350cc | 49701 | 52195 | 7401 | 9500 | ||||
| Ulster | 49701 | 52195 | 1 | 450 | ||||
| Silver Vase Special | 49701 | 52195 | 7401 | 9500 | ||||
| 250 TT-rep | 49701 | 52195 | RL60 | |||||
| 350 TT-Rep | 49701 | 52195 | ||||||
| 500 TT-Rep | 49701 | 52195 | ||||||
| Dirt Track | ||||||||
| 1934 | 250cc Sports | 52196 | 53960 | T1 | T750 | |||
| 250cc Standard | 52196 | 53960 | T1 | T750 | ||||
| Ulster | 52196 | 53960 | U1 | U600 | ||||
| Special | 52196 | 53960 | S1 | S1150 | ||||
| 1935 | 250cc Sports | 53961 | 55700 | T751 | T1050 | |||
| 250cc Tourist | 53961 | 55700 | T751 | T1050 | ||||
| Ulster | 53961 | 55700 | U601 | U1000 | ||||
| Special | 53961 | 55700 | S1151 | S2300 | ||||
| Competition | 53961 | 55700 | ||||||
| 1936 | 250cc Sports | 55701 | 58075 | T1051 | T1400 | |||
| 250cc Rapid | 55701 | 58075 | A1 | A600 | ||||
| Ulster | 55701 | 58075 | U1001 | U1615 | ||||
| Special | 55701 | 58075 | S2300 | S3100 | ||||
| Competition | 55701 | 58075 | ||||||
| 1937 | 250cc Rapid | 58076 | 61400 | A601 | A1250 | |||
| Ulster | 58076 | 61400 | U1616 | U2300 | ||||
| Special | 58076 | 61400 | S3100 | S5000 | ||||
| Sports Special | 58076 | 61400 | S3100 | S5000 | ||||
| 1938 | 250cc Sports | 61401 | 64300 | Z1 | Z500 | |||
| 250cc Rapid | 61401 | 64300 | A1251 | A1800 | ||||
| Ulster | 61401 | 64300 | U2301 | U2900 | ||||
| Special | 61401 | 64300 | S5001 | S6300 | ||||
| Sports Special | 61401 | 64300 | S5001 | S6300 | ||||
| 1939 | 250cc Sports | 64301 | 65745 | Z501 | Z750 | |||
| 250cc Rapid | 64301 | 65745 | A1801 | A2200 | ||||
| WD 250cc | 64533 | 64544 | A1871 | A1882 | 12 Produced | |||
| Ulster | 64301 | 65745 | U2901 | U3200 | ||||
| Special | 64301 | 65745 | S6301 | S7100 | ||||
| Sports Special | 64301 | 65745 | S6301 | S7100 | ||||
