Rudge machine dating

Guide to dating using frame/engine nos– 1925 to 1939 (copyright rudge-whitworth.com)

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 1925-1939
Year	Model	Frame Number from	Frame Number to	Engine From	Engine to	Gearbox from	Gearbox to	Notes

1925	350cc	2951	9441	1800	5600
	500cc Standard	2951	9441	28400	31500

1926	Standard	9441	18456	31500	39499
	Sports	9441	18456	31500	39499

1927	Standard	18457	24375	39500	46000	2300	5000
	Special	18457	24375	39500	46000	2300	5000
	Sports	18457	24375	39500	46000	2300	5000

1928	Standard	24376	30939	46000	52000	5000	13000
	Special	24376	30939	46000	52000	5000	13000
	Sports	24376	30939	46000	52000	5000	13000
	Dirt Track

1929	250 SV	30940	36641	B/S
	250 OHV	30940	36641	POY/S
	350cc	30940	36641	52000	57000	13000	18200
	Ulster grand Prix	30940	36641	52000	57000	13000	18200
	Special	30940	36641	52000	57000	13000	18200
	Dirt Track

1930	250 SV	36642	42995	B/W
	250 OHV	36642	42995	POY/W
	350cc	36642	42995	1	5100	18200	24900
	Ulster grand Prix	36642	42995	1	5100	18200	24900
	Special	36642	42995	1	5100	18200	24900
	Dirt Track

1931	250cc	42996	46500	1	600	1	570
	350cc	42996	46500	1	4900	24900	31200
	Ulster	42996	46500	1	4900	24900	31200
	Special	42996	46500	1	4900	24900	31200
	350 TT-Rep	42996	46500
	500 TT-Rep	42996	46500
	Dirt Track

1932	250cc	46501	49700	601	1300
	350cc	46501	49700	4901	7400	31200	33700
	Ulster	46501	49700	4901	7400	31200	33700
	Special	46501	49700	4901	7400	31200	33700
	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	33700	36500
	Ulster	49701	52195	1	450	33700	36500
	Silver Vase Special	49701	52195	7401	9500	33700	36500
	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	36500	38200
	Special	52196	53960	S1	S1150	36500	38200

1935	250cc Sports	53961	55700	T751	T1050
	250cc Tourist	53961	55700	T751	T1050
	Ulster	53961	55700	U601	U1000	38200	39600
	Special	53961	55700	S1151	S2300	38200	39600
	Competition	53961	55700

1936	250cc Sports	55701	58075	T1051	T1400
	250cc Rapid	55701	58075	A1	A600
	Ulster	55701	58075	U1001	U1615	39600	41000
	Special	55701	58075	S2300	S3100	39600	41000
	Competition	55701	58075

1937	250cc Rapid	58076	61400	A601	A1250
	Ulster	58076	61400	U1616	U2300	41000	44000
	Special	58076	61400	S3100	S5000	41000	44000
	Sports Special	58076	61400	S3100	S5000	41000	44000

1938	250cc Sports	61401	64300	Z1	Z500
	250cc Rapid	61401	64300	A1251	A1800
	Ulster	61401	64300	U2301	U2900	44000	46150
	Special	61401	64300	S5001	S6300	44000	46150
	Sports Special	61401	64300	S5001	S6300	44000	46150
	rudge-whitworth.com
1939	250cc Sports	64301	65745	Z501	Z750
	250cc Rapid	64301	65745	A1801	A2200
	WD 250cc	64533	64544	A1871	A1882			12 made
	Ulster	64301	65745	U2901	U3200	46150	46900
	Special	64301	65745	S6301	S7100	46150	46900
	Sports Special	64301	65745	S6301	S7100	46150	46900

**Rudge-Whitworth.com - The FREE technical site for Rudge Enthusiasts since 2001**

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