Model	Years	CC	Horses
R32	23-26	494cc	8.5 HP @ 3300 RPM
R37	25-26	494cc	16 HP @ 4000 RPM
R39	25-26	247cc	6.5 hp @ 4000 RPM
R42	26-28	494cc	12 HP @ 3400 RPM
R47	27-28	494cc	18 HP @ 4000 RPM
R52	28-29	494cc	12 HP @ 3400 RPM
R57	28-30	494cc	18 HP @ 4000 RPM
R62	28-29	745cc	18 HP @ 3400 RPM
R63	28-29	735cc	24 HP @ 4000 RPM
R11	29-34	745cc	20 HP @ 3400 RPM
R16	29-34	735cc	33 HP @ 4000 RPM
R2	31-36	198cc	8 HP @ 4500 RPM
R4	32-37	398cc	14 HP @ 4200 RPM
R3	1936	305cc	11 HP @ 4200 RPM
R12	35-42	745cc	20 HP @ 4000 RPM
R17	35-37	735cc	33 HP @ 5000 RPM
R5	36-37	494cc	24 HP @ 5800 RPM
R6	1937	596cc	18 HP @ 4800 RPM
R35	37-40	342cc	14 HP @ 4500 RPM
R20	37-38	192cc	8 HP @ 5400 RPM
R23	38-40	247cc	10 HP @ 5400 RPM
R51	38-40	494cc	24 HP @ 5600 RPM
R66	38-41	597cc	30 HP @ 5300 RPM
R61	38-41	597cc	18 HP @ 4800 RPM
R71	38-41	745cc	22 HP @ 4600 RPM
R75	41-44	745cc	26 HP @ 4000 RPM
R24	48-50	247cc	12 HP @ 5600 RPM
R25	50-51	247cc	12 HP @ 5600 RPM
R25/2	51-53	247cc	12 HP @ 5600 RPM
R25/3	53-56	247cc	13 HP @ 5800 RPM
R51/2	50-51	494cc	24 HP @ 5800 RPM
R51/3	51-54	494cc	24 HP @ 5800 RPM
R67	1951	594cc	26 HP @ 5500 RPM
R67/2	52-54	594cc	28 HP @ 5600 RPM
R67/3	55-56	594cc	28 HP @ 5600 RPM
R68	52-54	594cc	35 HP @ 7000 RPM
R50	55-60	494cc	26 HP @ 5800 RPM
R50/2	60-69	494cc	26 HP @ 5800 RPM
R69	55-60	594cc	35 HP @ 6800 RPM
R60	56-60	594cc	28 HP @ 5600 RPM
R60/2	60-69	594cc	30 HP @ 5800 RPM
R26	56-60	247cc	15 HP @ 6400 RPM
R27	60-66	247cc	18 HP @ 7400 RPM
R50S	60-62	494cc	35 HP @ 7650 RPM
R69S	60-69	594cc	42 HP @ 7000 RPM
R50/5	69-73	496cc	32 HP @ 6400 RPM
R60/5	69-73	599cc	40 HP @ 6400 RPM
R75/5	69-73	745cc	50 HP @ 6200 RPM
R60/6	73-76	599cc	40 HP @ 6400 RPM
R75/6	73-76	745cc	50 HP @ 6200 RPM
R90/6	73-76	900cc	60 HP @ 6500 RPM
R90S	73-76	900cc	67 HP @ 7000 RPM
R60/7	76-80	599cc	40 HP @ 6400 RPM
R75/7	76-77	745cc	50 HP @ 6200 RPM
R80/7	77-86	797cc	55 HP @ 7250 RPM
R100/7	76-78	980cc	60 HP @ 6500 RPM
R100S	76-78	980cc	65 HP @ 6600 RPM
R100RS	76-84	980cc	70 HP @ 7250 RPM
R100RT	78-84	980cc	70 HP @ 7250 RPM
R100T	78-84	980cc	65 HP @ 7250 RPM
R100CS	80-84	980cc	70 HP @ 7000 RPM
R45	78-85	473cc	27 HP @ 6500 RPM
R65	78-85	649cc	45 HP (78-79) 50 HP (80 on) @ 7250 RPM
R65LS	81-85	649cc	50 HP @ 7250 RPM
R80G/S	80-87	797cc	50 HP @ 6500 RPM
R80RT	82-84	797cc	50 HP @ 6500 RPM
R80ST	82-84	797cc	50 HP @ 6500 RPM
R65	85-93	650cc	48 HP @ 7250 RPM
R80	84-94	797cc	50 HP @ 6500 RPM
R80RT	84-94	797cc	50 HP @ 6500 RPM
R100RS	86-92	980cc	60 HP @ 6500 RPM
R100RT	87-95	980cc	60 HP @ 6500 RPM
R65GS	88-90	649cc	27 HP @ 5500 RPM
R80GS	87-94	800cc	50 HP @ 6500 RPM
R100G/S	88-94	980cc	60 HP @ 6500 RPM
R100R	91-95	980cc	60 HP @ 6500 RPM
R80R	92-95	798cc	50 HP @ 6500 RPM