Honda US90
From Wikipedia, the free encyclopedia
| Manufacturer | Honda |
|---|---|
| Also called | Honda ATC90 (1974-1978) |
| Production | 1970-1978 |
| Successor | Honda ATC110 |
| Class | Recreational ATC |
| Engine | 89.5 cc (5.46 cu in) Single-cylinder horizontal mount OHV engine |
| Bore / stroke | 50 mm × 45.6 mm (1.97 in × 1.80 in) |
| Compression ratio | 7.5:1 |
| Transmission | 4-Speed Auto-Clutch Dual Range |
| Frame type | steel |
| Suspension | None |
| Brakes | Rear drum |
| Tires |
|
| Wheelbase | 40 in. |
| Dimensions | L: 63 in. W: 38.2 in |
| Seat height | 25 in. |
| Weight | 228 lbs. (dry) |
| Fuel capacity | 1.6 gal |
| Oil capacity | 1 qt |
The Honda US90 was a three-wheeled Recreational vehicle designed by Osamu Takeuchi. Development began in 1967, in response to requests from American dealers for products to sell in the motorcycle off-season. Takeuchi considered many variations before settling on a three-wheeled design with low-pressure ballon tires, driven by an enlarged Honda ST70 engine, through a 4 Speed Dual-Range Semi automatic clutched transmission.[1]
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The Initial US90 was offered at $595 in 1970, and featured an 89cc engine producing 7 hp. The US90 designation was used until 1973, when Honda successfully trademarked the moniker ‘All Terrain Cycle’.[2] The designation was then changed to ATC90. The ATC prefix would be used for all Honda Three-Wheeled-Vehicles until production ceased in 1987, and become a universal epithet for other manufacturers three-wheeled machines.
2nd Generation ATC90 (1974-1978)
The US90 had been designed without suspension, which would be common place on ATC’s for the first decade. Cushioning for the rider was provided by the low-pressure hubless and rimless tires, which also provided a low-impact impression on the environments it traversed.[3] For all the benefits, the tires proved to be fragile in rougher terrain, and expensive to replace. This led to Honda developing traditional tire-and-rim designs in 1975, a feature continued on All-Terrain-Vehicles to this day.