Sunbeam Model 3 (1915-26) vs Sunbeam S8 500 (1949-56) vs Derbi Senda Terra 125 (2007-08) vs Derbi Mulhacén Café 125 (2008-) vs Derbi Senda R 125 4T (2004-07) vs Sunbeam B1 (1957-64) vs KTM 250 Duke (2015-17)

Comparison technical specifications

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Make:	Sunbeam	Sunbeam	Derbi	Derbi	Derbi	Sunbeam	KTM
Model:	Model 3	S8 500	Senda Terra 125	Mulhacén Café 125	Senda R 125 4T	B1	250 Duke
Years:	1915-26	1949-56	2007-08	2008-	2004-07	1957-64	2015-17
Engine:	Single cylinder, side valve	Parallel twin, SOHC	Four stroke, single cylinder. OHC	Two stroke, single cylinder	Four stroke, single cylinder. OHC	Parallel twin cylinder, 4 stroke	Four stroke, single cylinder, DOHC, 4 valves per cylinder
Capacity:	499 cc / 30.5 cu in	487 cc / 29.7 cu in	124 cc / 7.6 cu-in	124.7 cc / 7.6 cu-in	124 cc / 7.6 cu-in	250 cc / 15.3 cu in	248.8 cc / 15.2 cu in
Bore x Stroke:	85 x 88 mm	70 x 63.5 mm	56 x 49 mm	56 x 50 mm	56 x 49 mm	56 x 50.6 mm	72 x 61.1 mm
Cooling System:	Air cooled	Air/Oil cooled	Air cooled	Liquid cooled	Air cooled	Forced air cooled	Liquid cooling system, continuous circulation of cooling liquid with water pump
Transmission:	3-Speed	4-Speed	5 Speed	6 Speed	5 Speed	Four speed	6 Speed
Final Drive:	Chain	Shaft	Chain	Chain	Chain	Enclosed chain in oil bath	Chain 520 O-Ring 5/8 x 1/4"
Front Brakes:	Drum	Drum, leading shoe, 203 mm / 8"	Single 280mm disc	Single 280mm disc	Single 260mm disc	Drum, 127 mm diameter	Single 300 mm disc, 4 piston caliper
Rear Brakes:	Drum	Drum, leading shoe, 203 mm / 8"	Single 220mm disc	Single 220mm disc	Single 220mm disc	Drum, 127 mm diameter	Single 230 mm disc, 1 piston caliper, floating