Honda NSR150
Encyclopedia
The Honda NSR150 was a motorcycle produced in Thailand
by Honda
and Taiwan
as Honda NSR
by Kymco
and also manufactured under the name Kymco NSR.
The early Taiwanese NSR150 was produced with engines from Japan
, but was later casted in Taiwan by Kymco which in the beginning was off less pure quality than the Japanese ones.
The Taiwanese NSR150 had lower power than the ones made in Thailand because the carburetor
was smaller and the ports in the cylinder
had slightly different size.
It is common to switch to a Thailand made cylinder in NSR racing in Taiwan.
Due to a significant amount of warranty claims the CDI
was programed to open and then close the RC
valve because running cheap 2 stroke oil reduced the power of the engine further.
The Taiwan made NSRs made about 20hp while the Thailand ones produced about 30hp.
The NSR150 and NSR150 is quite closely related sharing the same stoke and share the appearance.
Kymco's spare parts supply to Taiwan NSR's are slowly declining with slowed production and competition from very available aftermarket parts.
YSS aftermarket rear suspension has been available for Taiwan NSR's since year 2000.
An interesting fact is that Kymco's 2010 Quannon Naked's 37MM front fork assembly can be nearly directly transplanted on Taiwan made NSR's with the help of a small CNC-ed washer , directly addressing the problem with "head float" under hard acceleration and stability at higher speeds.
An NSR 150SP currently holds the Bonneville Land Speed Record for Production 175cc motorcycles at 99.7mph.
Thailand
Thailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...
by Honda
Honda
is a Japanese public multinational corporation primarily known as a manufacturer of automobiles and motorcycles.Honda has been the world's largest motorcycle manufacturer since 1959, as well as the world's largest manufacturer of internal combustion engines measured by volume, producing more than...
and Taiwan
Taiwan
Taiwan , also known, especially in the past, as Formosa , is the largest island of the same-named island group of East Asia in the western Pacific Ocean and located off the southeastern coast of mainland China. The island forms over 99% of the current territory of the Republic of China following...
as Honda NSR
Honda NSR series
Honda NSR is a designation that applies to two types of two-stroke motorcycles from Honda. The NSR designation was used by Honda for both their factory Grand Prix racing machines built by the Honda Racing Corporation subdivision, and for the race replica motorcycles produced mainly for the...
by Kymco
Kymco
KYMCO KYMCO KYMCO (trade name for the Kwang Yang Motor Co, Ltd is a Taiwanese company that manufactures motor scooters, motorcycles, and ATVs for worldwide distribution. Founded in 1963, the company originally made parts for Honda. The company built its first complete scooter in 1970 and began...
and also manufactured under the name Kymco NSR.
The early Taiwanese NSR150 was produced with engines from Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...
, but was later casted in Taiwan by Kymco which in the beginning was off less pure quality than the Japanese ones.
The Taiwanese NSR150 had lower power than the ones made in Thailand because the carburetor
Carburetor
A carburetor , carburettor, or carburetter is a device that blends air and fuel for an internal combustion engine. It is sometimes shortened to carb in North America and the United Kingdom....
was smaller and the ports in the cylinder
Cylinder (engine)
A cylinder is the central working part of a reciprocating engine or pump, the space in which a piston travels. Multiple cylinders are commonly arranged side by side in a bank, or engine block, which is typically cast from aluminum or cast iron before receiving precision machine work...
had slightly different size.
It is common to switch to a Thailand made cylinder in NSR racing in Taiwan.
Due to a significant amount of warranty claims the CDI
Capacitor discharge ignition
Capacitor discharge ignition or thyristor ignition is a type of automotive electronic ignition system which is widely used in outboard motors, motorcycles, lawn mowers, chainsaws, small engines, turbine-powered aircraft, and some cars...
was programed to open and then close the RC
2-stroke power valve system
The two-stroke power valve system is an improvement to a conventional two-stroke engine that gives a high power output over a wider RPM range.- Operation of a two-stroke engine :A stroke is the action of a piston travelling the full length of its cylinder...
valve because running cheap 2 stroke oil reduced the power of the engine further.
The Taiwan made NSRs made about 20hp while the Thailand ones produced about 30hp.
The NSR150 and NSR150 is quite closely related sharing the same stoke and share the appearance.
Kymco's spare parts supply to Taiwan NSR's are slowly declining with slowed production and competition from very available aftermarket parts.
YSS aftermarket rear suspension has been available for Taiwan NSR's since year 2000.
An interesting fact is that Kymco's 2010 Quannon Naked's 37MM front fork assembly can be nearly directly transplanted on Taiwan made NSR's with the help of a small CNC-ed washer , directly addressing the problem with "head float" under hard acceleration and stability at higher speeds.
An NSR 150SP currently holds the Bonneville Land Speed Record for Production 175cc motorcycles at 99.7mph.