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Difference between revisions of "Yamaha IT490"
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{{ | |||
{{Motorcycle | |||
|name = Yamaha IT490 | |name = Yamaha IT490 | ||
| | |photo= yamaha-it490-1984-1984-1.jpg | ||
|aka = IT 490 | |aka = IT 490 | ||
|manufacturer = | |manufacturer = Yamaha | ||
|parent_company = | |parent_company = | ||
|production = 1983 - 1984 | |production = 1983 - 1984 | ||
|model_year = | |model_year = | ||
|predecessor = | |predecessor = [[Yamaha IT465]] | ||
|successor = | |successor = | ||
|class = | |class = Enduro | ||
|engine = Two stroke, single cylinder, read valve, air cooled | |engine = Two stroke, single cylinder, read valve, air cooled | ||
|bore_stroke = 86.4mm x 86.4mm | |bore_stroke = 86.4mm x 86.4mm | ||
|compression = 4.9:1 | |compression = 4.9:1 | ||
|top_speed = | |top_speed =80 mph | ||
|power = 35.0 HP (26.1 KW) @ 6000RPM | |power = 35.0 HP (26.1 KW) @ 6000RPM | ||
|torque = 30.98 ft/lbs (42.0 Nm) @ 5500RPM | |torque = 30.98 ft/lbs (42.0 Nm) @ 5500RPM | ||
|ignition = cdi | |ignition = cdi | ||
|spark_plug = | |spark_plug = {{sparkplug|NGK B8ES}} '83-84 | ||
|battery = | |battery = | ||
|transmission = Gear box: 5-Speed <br> | |transmission = Gear box: 5-Speed <br> | ||
Final Drive: Chain <br> | Final Drive: Chain <br> | ||
| Line 100: | Line 40: | ||
|fuel_capacity = 3.59 Gallon (13.60 Liters) | |fuel_capacity = 3.59 Gallon (13.60 Liters) | ||
|oil_capacity = | |oil_capacity = | ||
|recommended_oil= Yamalube 10w-40 | |||
|fuel_consumption = | |fuel_consumption = | ||
|turning_radius = | |turning_radius = | ||
|related = | |related = [[Yamaha IT125]], [[Yamaha IT175]], [[Yamaha IT200]], [[Yamaha IT250]], [[Yamaha IT350]], [[Yamaha IT490]], [[Yamaha IT500]], [[Yamaha YZ490]] | ||
|competition = | |competition = [[Honda CR500]], [[Kawasaki KX500]] | ||
|final_drive= {{chain|520x110}} ‘83-84<ref name="wps_street_2019">{{cite book|title=2019 Western Power Sports Catalog|publisher=[https://www.wps-inc.com/catalogs Western Power Sports]|date=2019}}</ref> | |||
|front_sprocket= 14T ‘83-84<ref name="wps_street_2019">{{cite book|title=2019 Western Power Sports Catalog|publisher=[https://www.wps-inc.com/catalogs Western Power Sports]|date=2019}}</ref> | |||
|rear_sprocket= 44T ‘83-84<ref name="wps_street_2019">{{cite book|title=2019 Western Power Sports Catalog|publisher=[https://www.wps-inc.com/catalogs Western Power Sports]|date=2019}}</ref> | |||
}} | }} | ||
The '''[[Yamaha]] IT 490''' was a Two stroke, single cylinder, read valve, [[air cooled]] Enduro [[motorcycle]] produced by [[Yamaha]] between 1983 and 1984. Max [[torque]] was 30.98 ft/lbs (42.0 Nm) @ 5500 RPM. Claimed [[horsepower]] was 35.0 HP (26.1 KW) @ 6000 RPM. | The '''[[Yamaha]] IT 490''' was a Two stroke, single cylinder, read valve, [[air cooled]] Enduro [[motorcycle]] produced by [[Yamaha]] between 1983 and 1984. Max [[torque]] was 30.98 ft/lbs (42.0 Nm) @ 5500 RPM. Claimed [[horsepower]] was 35.0 HP (26.1 KW) @ 6000 RPM. | ||
==Engine== | ==Engine== | ||
| Line 113: | Line 58: | ||
==Drive== | ==Drive== | ||
The bike has a 5-Speed transmission. Power was moderated via the Wet multi-discs. | The bike has a 5-Speed transmission. Power was moderated via the Wet multi-discs. | ||
==Chassis== | ==Chassis== | ||
It came with a 3.00 -21 front [[tire]] and a 150/80 -18 rear tire. Stopping was achieved via Drum in the front and a Drum in the rear. The front suspension was a 43mm Telescopic adjustable forks while the rear was equipped with a Mono shock, adjustable spring preload and rebound damping. The IT 490 was fitted with a 3.59 Gallon (13.60 Liters) fuel tank. The bike weighed just 275.58 pounds (125.0 Kg). The wheelbase was 56.5 inches (1435 mm) long. | It came with a 3.00 -21 front [[tire]] and a 150/80 -18 rear tire. Stopping was achieved via Drum in the front and a Drum in the rear. The front suspension was a 43mm Telescopic adjustable forks while the rear was equipped with a Mono shock, adjustable spring preload and rebound damping. The IT 490 was fitted with a 3.59 Gallon (13.60 Liters) fuel tank. The bike weighed just 275.58 pounds (125.0 Kg). The wheelbase was 56.5 inches (1435 mm) long. | ||
==1983== | |||
<gallery mode='packed-hover'> | |||
File:1983-yamaha-it490-0.jpg|1983 Yamaha IT490 | |||
File:1983-yamaha-it490-1.jpg|1983 Yamaha IT490 | |||
File:1983-yamaha-it490-2.jpg|1983 Yamaha IT490 | |||
File:1983-yamaha-it490-3.jpg|1983 Yamaha IT490 | |||
File:1983-yamaha-it490-4.jpg|1983 Yamaha IT490 | |||
File:1983-yamaha-it490-5.jpg|1983 Yamaha IT490 | |||
</gallery> | |||
==1984 Yamaha IT 490== | ==1984 Yamaha IT 490== | ||
<gallery mode='packed-hover'> | |||
File:1984-yamaha-it-490-0.jpg|1984 Yamaha IT 490 | |||
File:1984-yamaha-it-490-1.jpg|1984 Yamaha IT 490 | |||
File:1984-yamaha-it-490-2.jpg|1984 Yamaha IT 490 | |||
File:1984-yamaha-it-490-3.jpg|1984 Yamaha IT 490 | |||
File:yamaha-it490-1984-1984-1.jpg|600px|1984 Yamaha IT 490 | |||
File:yamaha-it490-1984-1984-0.jpg|600px|1984 Yamaha IT 490 | |||
</gallery> | |||
The big news in the powerplant is the bump in displacement from 465 to 487cc, accomplished simply by increasing the cylinder bore two millimeters. This follows the large, seven-millimeter increase in stroke which boosted the IT's displacement from 425 to 465cc in 1981. Aside from the trendiness involved in increasing their open-classers' engine sizes, most manufacturers are nudging 500cc because more displacement is the most straightforward route to better power. | |||
==See Also== | |||
*[[Yamaha IT200]] | |||
*[[Yamaha IT250H]] | |||
==References== | |||
{{reflist}} | |||
{{Yamaha}} | |||
[[Category:Yamaha motorcycles|IT490]] | |||
[[Category:Yamaha IT series]] | |||
[[Category:Enduro motorcycles]] | [[Category:Enduro motorcycles]] | ||
[[Category:1980s motorcycles]] | [[Category:1980s motorcycles]] | ||