Yamaha DS6-C 250 Specification

Yamaha DS6-C 250

The history of the Yamaha DS6 engine has long been a clear advantage of its relationship with Yamaha TD1 250 racing, which has been very successful in the last decade.

people can thank Yamaha's racing for improving, as companies intend to keep 250 drivers on the podium, and good things on the track can be reduced to find a spot on the road. Each time the public improves the riders, they will try to determine how to adapt to what it is on road bikes. Added for TD's Daytona promotional Yamaha DS6 won in 1967 and 1968.

The Yamaha DS6 246cc engine is a piston port design with a 56 mm retention and a 50 mm stroke that has been around for over 10 years. The compression ratio is a reliable 7.3:1, and now the cylinder has a brass head seal to replace the previous aluminum, with the possibility of failing when pushed hard.

Naturally, the new joints, the origin of the racing TDs within the engine, which carry the race profitably, although they are not subject to more than 10,000 cycles achieved by TDs, are said to be 30 advertised horses are built at 7:500 rpm and taken from the crankshaft instead of the wheels.

The road test simply cites "BHP claims".

Yamaha DS6-C 250 Specification

General information
Model:	Yamaha DS 6
Year:	1970
Category:	Classic
Engine and transmission
Displacement:	246.0 ccm (15.01 cubic inches)
Engine type:	Twin, two-stroke
Power:	28.0 HP (20.4 kW)) @ 7250 RPM
Top speed:	146.0 km/h (90.7 mph)
Compression:	7.3:1
Bore x stroke:	56.0 x 50.0 mm (2.2 x 2.0 inches)
Fuel control:	Port control
Cooling system:	Air
Gearbox:	5-speed
Transmission type, final drive:	Chain
Chassis, suspension, brakes and wheels
Front tyre:	3.00-18
Rear tyre:	3.25-18
Front brakes:	Expanding brake
Rear brakes:	Expanding brake
Physical measures and capacities
Weight incl. oil, gas, etc:	145.0 kg (319.7 pounds)
Fuel capacity:	11.00 litres (2.91 gallons)