1968-70 Archives - MotorcycleSpecifications.com

BSA C25 (1968-70)

admin — Fri, 07 Apr 2023 13:32:58 +0000

The BSA C25 is a vintage motorcycle that was manufactured from 1968 to 1970. It was a 250cc four-stroke single-cylinder bike that was designed for off-road use. The C25 had a height of 31 inches and an overall length of 80.5 inches, and it weighed around 250 pounds. It had a top speed of 75 mph, and its engine produced 23 hp at 7,500 rpm.

The bike had a 4-speed gearbox and a chain drive, and it was available in two versions: the BSA C25 Starfire and the BSA C25 Barracuda. The Starfire had a more traditional design, while the Barracuda was more modern and sporty. Both versions had front and rear drum brakes, and telescopic forks with hydraulic shocks.

Some of the features that made the BSA C25 unique included its high-mounted exhaust pipe, its narrow gas tank, and its slim profile. It was known to be a reliable and durable bike, and it was popular among off-road riders and enthusiasts.

Today, the BSA C25 is considered a classic motorcycle, and it is highly sought after by collectors and vintage bike enthusiasts. Despite its age, it still performs well and can be used for both on-road and off-road purposes. If you’re looking for a vintage bike with a classic look and feel, the BSA C25 is definitely worth considering.

Technical specifications:

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Triumph T150 Trident 750 (1968-70)

admin — Thu, 06 Apr 2023 00:23:00 +0000

The Triumph Trident T150 750 motorcycle was produced from 1968 to 1970 with a transverse three cylinder, pushrod OHV engine that had a 741 cc capacity and could reach a top speed of 169 km/h (105 mph). It had a 4-speed constant mesh transmission and a chain final drive. The frame was a single downtube with a duplex cradle, and suspension consisted of a hydraulic telescopic fork in the front and swingarm with dual shocks in the rear. Brakes were 8 inch TLS drums in the front and 7 inch TLS drums in the rear, while the tires were Dunlop K70. The motorcycle had a length of 2184 mm (86.0 in), width of 840 mm (33.0 in), height of 1005 mm (43.5 in), and a dry weight of 209 kg (460 lbs). The fuel capacity was 19 L (5.0 US gal / 4.2 Imp gal) and it had a seat height of 813 mm (32 in). The Triumph Trident T150 750 had a compression ratio of 9.0:1 and used 3 x 26 mm Amal MK1 carburetors for induction. The ignition was individual points & coils and it was started through kick starting. The motorcycle could produce a maximum power of 43.3 kW / 58 hp @ 7250 rpm.

Technical specifications:

Make Model: Triumph Trident T150 750

Year: 1968 – 70
Engine: Tansverse three cylinder, pushrod OHV, 2 valves per cylinder
Capacity: 741 cc / 45.2 cu in
Bore x Stroke: 67 x 70.5 mm
Compression Ratio: 9.0:1
Cooling System: Air cooled
Lubrication: Dry sump
Induction: 3 x 26 mm Amal MK1 carburetors
Ignition: Individual points & coils
Starting: Kick
Max Power: 43.3 kW / 58 hp @ 7250 rpm
Transmission: 4 Speed, constant mesh
Final Drive: Chain
Gear Ratios: 1st 13.00 / 2nd 9.00 / 3rd 6.64 / 4th 5.26:1
Frame: Single downtube, duplex cradle
Front Suspension: Telescopic fork, hydraulic
Rear Suspension: Swingarm, dual shocks
Front Brakes: 8 in TLS drum
Rear Brakes: 7 in TLS drum
Front Tyre: 3.25-19, Dunlop K70
Rear Tyre: 4.10-19, Dunlop K70
Dimensions: Length: 2184 mm / 86.0 in Width: 840 mm / 33.0 in Height: 1005 mm / 43.5 in
Wheelbase: 1429 mm / 56.3 in
Ground Clearance: 165 mm / 6.5 in
Seat Height: 813 mm / 32 in
Dry Weight: 209 kg / 460 lbs
Fuel Capacity: 19 L / 5.0 US gal / 4.2 Imp gal
Top Speed: 169 km/h / 105 mph

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Norton Commando 750 Fastback (1968-70)

admin — Tue, 04 Apr 2023 07:47:06 +0000

The Norton Commando 750 Fastback motorcycle was produced from 1968 to 1970. It has a four-stroke, parallel twin-cylinder engine with a capacity of 745cc and a compression ratio of 9.0:1. The bike is air-cooled, with induction through two ~A30mm Amal concentric carburetors and ignition from a 12V alternator. The Commando 750 Fastback comes equipped with both electric and kick starting options, and can output a maximum of 58 hp (43 kW) at 6800 rpm. The four-speed transmission uses a chain final drive, and the bike has telescopic forks and dual rear shocks that are five-way adjustable. Front and rear drum brakes are both twin leading shoe, with diameters of ~A203mm and ~A178mm, respectively. The bike has 19-inch tires in both the front and rear, with dimensions of 4.10-19. The overall length of the Commando 750 Fastback is 2220mm (87.5 in), with a width of 660mm (26 in) and a wheelbase of 1441mm (56.75 in). The seat height is 863.6mm (34 in) and the dry weight is 190kg (420 lbs). The fuel capacity is 10 litres (2.6 US gal), and the top speed can reach 187 km/h (116 mph).

Technical specifications:

Make Model: Norton Commando 750 Fastback

Year: 1968 – 70
Engine: Four stroke, parallel twin cylinder, push rod, 2 valves per cylinder.
Capacity: 745 cc / 45.5 cu in
Bore x Stroke: 73 x 89 mm
Compression Ratio: 9.0:1
Cooling System: Air cooled
Induction: 2 x ~A30mm Amal concentric carburetors
Ingnition: 12V, alternator
Starting: Electric and kick
Max Power: 58 hp / 43 kW @ 6800 rpm
Transmission: 4 Speed
Final Drive: Chain
Front Suspension: Telescopic forks
Rear Suspension: Dual shocks, 5-way adjustable
Front Brakes: ~A203 mm Drum, twin leading shoe
Rear Brakes: ~A178 mm Dum, twin leading shoe
Front Tyre: 4.10-19
Rear Tyre: 4.10-19
Dimensions: Length 2220 mm / 87.5 in Width 660 mm / 26 in
Wheelbase: 1441 mm / 56.75 in
Seat Height: 863.6 mm / 34 in
Dry Weight: 190 kg / 420 lbs
Fuel Capacity: 10 Litres / 2.6 US gal
Top Speed: 187 km/h / 116 mph

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Yamaha DT250 (1968-70)

admin — Tue, 04 Apr 2023 07:14:58 +0000

The Yamaha DT-1 250 was a two-stroke, single cylinder motorcycle produced from 1968 to 1970. It had a displacement of 246 cc and a compression ratio of 6.4:1. The bike was air-cooled and featured a carburetor induction system with autolube lubrication. The ignition was operated by a flywheel magneto and it had a kick-start system. The power output was 22.8 hp at 7000 rpm and the max torque was 23.7 Nm at 6500 rpm. The transmission was a 5-speed manual and the final drive was chain-operated. The bike had a duplex cradle frame, telescopic forks for the front suspension and dual shocks for the rear suspension. The front and rear brakes were both drum brakes. The front tyre was 3.25-19 and the rear was 4.00-18. The bike dimensions were length 2100.5 mm, width 889.0 mm, and height 1160.7 mm. It had a wheelbase of 1389.3 mm and a ground clearance of 254 mm. The dry weight of the bike was 111 kg and it had a fuel capacity of 9 litres.

Technical specifications:

Make Model: Yamaha DT-1 250

Year: 1968 – 70
Engine: Two stroke, single cylinder
Capacity: 246 cc / 15.0 cu-in
Bore x Stroke: 70 x 64 mm
Cooling System: Air cooled
Compression Ratio: 6.4:1
Lubrication: Autolube
Induction: Carburetor
Ignition: Flywheel magneto
Starting: Kick
Max Power: 22.8 hp / 16.8 kW @ 7000 rpm
Max Torque: 23.7 Nm / 17.5 lb-ft @ 6500 rpm
Transmission: 5 Speed
Final Drive: Chain
Frame: Duplex cradle
Front Suspension: Telescopic forks
Rear Suspension: Dual shocks
Front Brakes: Drum
Rear Brakes: Drum
Front Tyre: 3.25 -19
Rear Tyre: 4.00 -18
Dimensions: Length 2100.5 mm / 82.7 in Width 889.0 mm / 35.0 in Height 1160.7 mm / 45.7 in
Wheelbase: 1389.3 mm / 54.7 in
Ground Clearance: 254 mm / 10.0 in
Dry Weight: 111 kg / 245 lbs
Fuel Capacity: 9 Litres / 2.5 US gal

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BSA B25 (1968-70)

admin — Wed, 29 Mar 2023 20:53:56 +0000

The BSA B25 motorcycle was introduced in 1968 as a smaller version of the popular BSA B44. It featured a 250cc engine, chrome-plated gas tank, and a polished aluminum fender.

The BSA B25 was marketed towards riders who desired a lightweight and nimble motorcycle that was still capable of handling rough terrain. It was used for both on and off-road racing, and was known for its reliability and durability.

The BSA B25 went through several changes between 1968 and 1970. The early models featured an Amal Concentric carburetor, while later models had a Dell’Orto carburetor. The front forks were also upgraded from telescopic to leading link, and the brakes were changed from drum to disc.

Despite its popularity, the BSA B25 was eventually replaced by the BSA B50 in 1971. Today, it remains a popular choice among classic motorcycle collectors and enthusiasts.

Overall, the BSA B25 was a significant motorcycle in BSA’s history, offering a smaller and more versatile alternative to the larger B44. Its ruggedness and agility made it a popular choice for riders in the late 1960s and early 1970s, and it has remained a beloved classic motorcycle over the years.

Technical specifications:

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Ducati 350 Mark 3D (1968-70)

admin — Wed, 29 Mar 2023 20:23:00 +0000

The Ducati 350 Mark 3D (1968-70) is a four-stroke, single cylinder, SOHC motorcycle with a capacity of 340.2cc / 20.8 cu in. It has a compression ratio of 9.5:1 and is powered by a Dell’Orto SS129D induction system, with ignition provided by points, coil, and a 6V30W generator. The bike has a Yuasa B38 12Ah battery and is started by kick. It can produce a maximum power of 24.8 kW / 34 hp @ 8500 rpm. The wet, multiplate clutch is connected to a 5-speed transmission with gear ratios of 1st 2.46 / 2nd 1.73 / 3rd 1.35 / 4th 1.10 / 5th 0.97:1.

The final drive of the Ducati 350 Mark 3D is via chain and has a ratio of 3.214:1. The motorcycle has a front suspension of 31.5mm Ducati telescopic hydraulic fork, and a rear suspension consisting of a swingarm with twin Marzocchi shocks that are 3-way adjustable. The front and rear brakes are 180mm and 160mm drums, respectively. The front and rear tires are 2.75-18 and 3.00-18 respectively.

The bike measures 2000 mm / 78.7 in in length, 600 mm / 23.6 in in width, and 940 mm / 37.0 in in height, with a seat height of 735 mm / 28.9 in. The dry weight of Ducati 350 Mark 3D is 128 kg / 282 lbs and has a fuel capacity of 15 liters / 4.0 US gal / 3.3 Imp gal. The motorcycle can reach a top speed of 170 km/h / 106 mph.

Technical specifications:

Make Model: Ducati 350 Mark 3

Year: 1968-70
Engine: Four stroke, single cylinder, SOHC, bevel gear driven
Capacity: 340.2cc / 20.8 cu in
Bore x Stroke: 76 x 75 mm
Compression Ratio: 9.5:1
Induction: Dell’Orto SS129D
Ignition: Points, coil, 6V30W generator
Battery: Yuasa B38 12Ah
Spark Plug: Marelli CW260N / Lodge 2HN
Starting: Kick
Max Power: 24.8 kW / 34 hp @ 8500 rpm
Clutch: Wet, multiplate
Primary Drive Ratio: 2.111:1
Transmission: 5 Speed
Gear Ratios: 1st 2.46 / 2nd 1.73 / 3rd 1.35 / 4th 1.10 / 5th 0.97:1
Final Drive: Chain
Final Drive ratio: 3.214:1
Front Suspension: 31.5 mm Ducati telescopic hydraulic fork
Rear Suspension: Swingarm, Twin Marzocchi shocks, 3-way adjustable
Front Brakes: 180 mm Drum
Rear Brakes: 160 mm Drum
Front Tyre: 2.75-18
Rear Tyre: 3.00-18
Dimensions: Length: 2000 mm / 78.7 in Width: 600 mm / 23.6 in Height: 940 mm / 37.0 in
Seat Height: 735 mm / 28.9 in
Dry Weight: 128 kg / 282 lbs
Fuel Capacity: 15 Litres / 4.0 US gal / 3.3 Imp gal
Top Speed: 170 km/h / 106 mph

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Norton Mercury 650 (1968-70)

admin — Wed, 29 Mar 2023 03:41:56 +0000

The Norton Mercury 650 was a motorcycle produced between 1968 and 1970. It had a four-stroke, parallel twin engine with a capacity of 646 cc and a bore x stroke of 68 x 89 mm. The bike was air-cooled with a compression ratio of 9.0:1 and featured two-into-two chrome exhausts and a single concentric carburetor by Amal. The ignition was coil capacitor and the spark plug options were KLG FE75 or FE80, Lodge 2HLN, and Champion N5. The bike was kick-started and had a maximum power of 35 kW or 47 hp. The transmission was 4-speed and the final drive was chain. The frame had a single downtube and cradle with telescopic front suspension and swingarm rear suspension with plungers. The front brakes were drum, twin leading shoe and the rear brakes were also drum. The wheels were made of steel with laced wire spokes and the front and rear rims were 3.00 x 19” and 3.50 x 19” respectively. The dry weight was 185 kg or 408 lbs and it was available in two color schemes: quicksilver and Atlantic blue or silver and black.

Technical specifications:

Make Model: Norton Mercury 650

Year: 1968 – 70
Engine: Four stroke, parallel twin
Capacityir coole: 646 cc / 39.4 cu in
Bore x Stroke: 68 x 89 mm
Cooling System: Air cooled
Compression Ratio: 9.0:1
Exhaust: Two-into-two, chrome
Induction: Single concentric carburetor, Amal
Ignition: Coil capacitor
Spark Plug: KLG FE75 or FE80, Lodge 2HLN, Champion N5
Battery: 12V
Starting: Kick
Max Power: 35 kW / 47 hp
Transmission: 4-Speed
Final Drive: Chain
Gear Ratios: 1st 11.32 / 2nd 7.52 / 3rd 5.39 / 4th 4.42:1
Frame: Single downtube, cradle
Front Suspension: Telescopic fork
Rear Suspension: Swingarm, plungers
Front Brakes: Drum, twin leading shoe
Rear Brakes: Drum
Wheels: Steel, laced wire spokes
Front Rim: 3.00 x 19″ (USA 3.25 x 19″)
Rear Rim: 3.50 x 19″ (USA 4.00 x 18″)
Dry Weight: 185 kg / 408 lbs
Colours: Quicksilver and Atlantic blue / Silver and black

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