Yamaha SR500 : Wikis (The Full Wiki)

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Yamaha SR 500

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Yamaha SR500

The Yamaha is a popular thumper. It first production in 1978, as a road-going of the popular Yamaha XT500. [ 1 ] It good sales throughout the US, and Australia. The SR500 is no longer in any market worldwide, but its sister the SR400, was manufactured in Japan 2008 when emmissions halted production. In 2010 is reintroducing the SR400 with a injection system replacing the

The SR400 is essentially the same as the SR500, but with a shorter and heavier muffler to pass emission restrictions.


Released in 1978, the SR500 was attempt to cash in on nostalgia for the when 500 singles were the mount of serious riders. The eventually led to the SRX600 and Yamaha now a 660 road single. Although, the of the SR500 remains so strong, Yamaha has continued to produce it in 2008) both for the Japanese market (in 400cc form to advantage of registration laws) and for the market where its popularity has diminished.

The roaring seventies saw a development: faster, bigger and the motorcycle world seemed to around. The dream was made of with constantly increasing power. It was a fascinating development and manufacturers did everything to boost mainstream fashion, when turned around and seemed to go

Forgotten were the times in the where big singles touched the of enthusiasts. The famous British singles, such as Norton, or BSA had died, smoother and faster replaced them. They less vibrating and so much to ride and the breed of big thumpers to share the fate of the good old

No wonder the world was kind of when the forgotten came the XT 500 brought back the steam sound of a big single four and the world was prepared to listen.

was reluctant at first

Shiro (later also responsible for XS 750 XS 400 twin, XS 1100 four and the SR who developed the XT engine remembers: the off road market started in the US, bikers remembered the advantages of the old singles. Soon the sales started to request the development of a … for off road. Honestly we engineers were quite in the beginning, since we knew the difficulties of these big thumpers.

As as they had a bit more power turned out to be unreliable and they shaking like hell.

continues, Now I can confess that this first big single was a nightmare. It was only the second designed by Yamaha. We tested different configurations including and even cylinder head oil but the XT was supposed to be simple and reliable and we away from all these solutions.

Many technical to be solved

First, the heavy gave us countless problems. seized up and were punched. and head development was as difficult. We had a cylinder that broke in the

At that time we didn’t try balancer systems, although we had problems with broken bearings as well. The con-rod had no big end but was turning on a needle bearing needed a low pressure lubrication. We did this choice instead of a one-piece forged crankshaft assembled connecting rod because it us to build a much more engine and was also cheaper to due to its vertically split crankcase.

In the end all our problems delayed the roll out by than one year But we had succeeded, XT was now reliable than a big single had ever been. Although it was square with a bore and of 87 x 84 mm, (all British bikes long …) we obtained the character of a big thumper. The two-valve gave a flat torque while the smaller flywheel the engine to rev up as easily as we wanted.

Dry and short … also for better ground clearance and a compact engine than British bikes ever

Rollout in 1975 in the US

The first XT 500 was at the US dealer convention in September Europeans had to wait till the of 1976 before they press their boots the heavy kick-starter.

The XT 500 was an instant and was produced until 1990. It the ground for the later range of XT ranging from 125 cc (XT 125) to 750 750) and contributed largely to image.

The XT proved its performance and reliability by the first big African rallies, were on the rise in the late It started with Paris-Abidjan-Nice and the godfather of all rallies, the famous which confirmed the supremacy of the XT In France alone 62,000 XT were sold from to 1990.

SR 500: the thumper for the road

Shunji Tanaka’s from the beginning of the XT project, was to a street model on the same base for the European market. He resistance first from people, who were convinced the big thumper era on the road was definitely We will only sell units he used to hear.

believed in his intuition and pushed the SR 500 for the launch in the Japanese market in While for the XT the priority had been and simplicity, the keyword for this model was easy to use. It the major difference between the SR and XT the electronic ignition and a clever new to make kick start

It was a manual decompressor system.

tells the background story: It in fact from an accident! Mr. Yamaha Motor’s Technical tested the SR prototype and got a wrench to his as he tried to kick it.

Easy then instantly became a priority!

Yamaha SR 500
Yamaha SR 500

British design

The SR 500 was designed by Atsushi Ishiyama, President of GK dynamics. He worked on the first Yamaha and contributed a lot to Yamaha’s reputation in design. He Our choice was to design the new SR 500 with a family image and a strong to our first four …, the XS 650 which was also inspired by design at first.

The SR 500 was going to become a legend as one of reliable and easy-to-maintain motorcycles built. It sold until with a huge demand in and Japan, until new noise and regulations signalled the end for the this big single.

The XT 500 in the Paris Dakar

XT 500 entered desert Rallies in in the second edition of the first of this type organised, the also called Côte d’Azur. Four official XTs at the start on December 29th They were completely with the exception of a 25 liter tank and a sturdy luggage supporting tools and two 5 litre cans. Aside those engaged by the French importer, 14 other XTs.

It was a fantastic a total of 10 XTs finished the hard desert race where Comte took the victory. For XT and Paris-Dakar Rally were that belonged together. In and 1980, Cyril Neveu won on an XT


Commonly an extra oil is run to the exhaust side of the cylinder — a design flaw has been rectified in the later models. Many SR owners their own oil lines to both and exhauser rockers to ensure lubrication.

SR400 Evolution

1978 the debut of both the SR400-a with a super-long reign as a top in the mid-range class and that now maintains a deep-rooted popularity in its sister bike, the SR500.

The was born with the same 4-…, overhead cam, single-cylinder engine from the big off-roader, but with a shortened and refined for road sports resulting in a final capacity of Equipped with a decompression dry sump oil lubrication that a portion of the frame for its tank, and a indicator for the kick-start engine, the started more easily any single-cylinder motorcycle had up to that The front fork, the rims and the were all taken from the and the tires employed a semi-block for running on dirt, like a

In 1985, a drum brake was in the front, and the front wheel was dropped from 19 inches to 18 in to produce a retro look. reliability was also targeted for the through a change in oil lines as as other parts. From hydraulic front disc were installed, and the SR400 to a machine that provided greater enjoyment during and deceleration than was usual for a bike of its age.

Since it is a bike, you’ll experience the of the lightweight, compact, slim as soon as you get on. Not only is it easy to at a stop, but Yamaha’s return of the position to that of the initial coupled with the repeated made to the seat, were effective in creating a comfortable position with only a bending of the knees. The motor is kick-started.

An understanding of the four … and careful positioning of the cylinder past the top-…-center position aid in starting. All starts use the choke, starts benefit by first the throttle a couple times to extra gas in the carburetor. The engine never be started with the in the open position due to the chance of kick-back.

Handling displays a straightforward character from to end, and the engine also necessarily value response all else. Rather than all the way up to high revs, shift up a bit early and you’ll experience a ride while enjoying the of the engine and the surrounding scenery. the kind of relaxed running most suitable for the gorgeous ____________________________________________________________________________________________________

Yamaha SR 500
Yamaha SR 500
Yamaha SR 500
Yamaha SR 500
Yamaha SR 500
Yamaha SR 500
Yamaha SR 500

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