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	49600	601	1300
	350cc	46501	49600	4901	7400
	Ulster	46501	49600	4901	7400
	Special	46501	49600	4901	7400
	250 TT-rep	46501	49600		RL60
	350 TT-Rep	46501	49600
	500 TT-Rep	46501	49600
	Dirt Track

1933	250cc	49601	52195	1	700
	350cc	49601	52195	7401	9500
	Ulster	49601	52195	1	450
	Silver Vase Special	49601	52195	7401	9500
	250 TT-rep	49601	52195	RL60
	350 TT-Rep	49601	52195
	500 TT-Rep	49601	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