Yamaha SR400SP (1979)

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The Yamaha SR400SP motorcycle was produced in 1979 and is a four stroke, single cylinder engine with a capacity of 399 cc. Its compression ratio is 8.5:1 and it features air cooling, a BSR33 carburetor and a wet, multiple disc clutch. The transmission is a 5 speed chain drive and the frame is made of steel double cradle. The front suspension consists of a 35mm telescopic fork and the rear suspension is dual shocks with 5-way adjustable preload. The front wheel travel is 150 mm and the rear wheel travel is 105 mm. The motorcycle has a single disc front brake and drum rear brake with a wheelbase of 1410 mm and a seat height of 790 mm. The fuel capacity is 12 litres and wet weight is 174 kg. The Yamaha SR400SP has a maximum power of 27 hp (17.1 KW) at 7000 rpm and a maximum torque of 27.4 Nm (6.3 kgf-m) at 6500 rpm. It has a front tyre size of 3.50-19 and a rear tyre size of 4.00-16 with a rake caster angle of 27 o and a trail of 111 mm. The ground clearance is 130 mm.

Technische Daten:

Make Model: Yamaha SR 400SP

Jahr: 1979


Motor: Viertakt, Einzylinder, SOHC, 2 Ventile pro Zylinder.
Hubraum: 399 cm³ / 24,3 cu-in
Bohrung x Hub: 87 67,2 mm
Verdichtungsverhältnis: 8,5:1
Kühlsystem: Luftgekühlt
Ölkapazität: 2,4 Liter
Schmierung: Trockensumpf
Ansaugung: BSR33 Vergaser
Zündung: CDI
Start: Kick
Max Leistung: 27 PS / 17,1 KW @ 7000 U/min
Max. Drehmoment: 27,4 Nm / 6,3 kgf-m @ 6500 U/min
Kupplung: Nass, Mehrscheiben
Getriebe: 5-Gang
Endantrieb: Kette

Rahmen: Stahl-Doppelwippe
Front Suspension: 35mm Telescopic fork
Federweg Vorderrad: 150 mm / 5.9 in
Rear Suspension: Dual shocks, 5-way adjustable preload
Front Wheel Travel: 105 mm / 4.1 in
Vordere Bremsen: Einzelne Scheibe
Hintere Bremsen: Trommel
Reifen vorne: 3.50-19
Hinterreifen: 4.00-16
Nachlaufwinkel der Harke: 27 o
Nachlauf: 111 mm / 4.4 in
Radstand: 1410 mm / 55.5 IN
Sitzhöhe: 790 mm / 30.9 in
Bodenfreiheit: 130 mm / 5.1 in
Nassgewicht: 174 kg / 384 lbs
Kraftstoffkapazität: 12 Liter / 3.2 gal

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