The Honda Express or Honda NC50 was a scooter manufactured by Honda between 1977 and 1983. All versions of the Express are powered by an air-cooled 49cc two-stroke engine. But before you work on your Express, double-check to see if you have a Honda Express owner's manual.
In 1977, Honda unveiled the Honda Express (NC50) to the North American market. This new bike was designed to answer the demand for fuel-efficient vehicles following the 1973 oil crisis. It came with a fuel-efficient two-stroke single-cylinder engine. It was also designed to be easy and straight forward to operate. Honda was able to accomplish this by using a small oil pump and a fully automatic transmission.
In 1979, the na50, or Express II, was released. It was manufactured until 1981. Differences include a more ""comfortable"" seat, different frame, a slightly larger gas tank, and three handlebars. The 1981 model only came with a 2-speed automatic transmission.
The nx50, also known as the Honda express sr, used a completely different engine from the nc and na50. It came equipped with a variable transmission, belt-driven, slightly different intake manifold, and a more massive reed valve block.
The nu50 and nu50m, or Honda urban express, was the replacement for the express II model in 1982 and was only manufactured until 1983. It used a similar belt-driven. Most bikes’ top speed is approximately 30 mph. It comes with an electric start and other standard features including; indicators, oil injection, CDI ignition, an alternator, 12v battery, oil tank indicator, and beefier shocks and larger wheels than the regular Express. A uniquely restricted version was manufactured just for the lower speed requirements to be sold in Iowa; the Iowa models were limited to a maximum of 25mph. However, making sure you have a Honda Express service manual may prove useful if you ever find yourself working on one.