Honda Sport 90

Manufacturer	Honda
Also called	Honda S90, Honda CS90, Honda Sport 90, Honda Super 90, Honda Benly 90
Production	1964-1969
Predecessor	none
Engine	89.6 cc SOHC 2-valve 4-stroke air-cooled
Transmission	4-speed
Suspension	Front: Rear: Swingarm
Dimensions	L 74.47in (1890mm) W 25.61in (650mm) H 38.61in (980mm)
Weight	190.73 lbs. (86.5 kg) (dry)

The Honda Sport 90, possibly more popularly known as the Honda Super 90 or simply Honda S90, is 90 cc low-powered motorcycle made between 1964 and 1969.

It had a single cylinder OHC air-cooled engine linked to a four speed transmission. There was no tachometer but the speedometer indicated speed ranges for each gear. Top speed was claimed to be 64 mph as compared to the CL90's 59. The engine was rated at 8 horsepower, presumably at the countershaft sprocket, as Honda denied having more than 6.5 HP at the rear wheel, as evidenced in a letter written to [at least] the Reliable Co., the only Honda dealership at the time in Winnemucca, Nevada, in order to quell complaints by the Highway Patrol of sales to younger riders. (A rating under 6.5HP was a requirement in Nevada for a low-powered motorcycle license for those 14 and over, to the age of 16. There was a 35 mph top speed requirement, which was up to the operator to control.)

Hand clutch and usual controls were in place. Shifting was "1 down, 3 up," with neutral between these.

A metal cylinder behind the carburetor held the air filter. Tools went under the seat in their own compartment. The frame was pressed steel. This machine was not intended for off road, as evidenced by narrow handle bars, "universal" street tires, and no accessories for such travel. 90 miles per US gallon (38 km/l) was not hard to attain, even with spirited riding. The engine held a quart of oil and had an internal centrifugal oil filter.

There are a variety of models including the Honda S90, CS90, Sport 90, Super 90 and the Benly 90. The date of manufacturing can be determined by removing the fuel tank and examining the tag surrounding the wiring harness.

References

• Honda S90 Shop Manual