Difference between revisions of "Yamaha AT1"

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{{Motorcycle
|name            = Yamaha AT1
|photo= 1970-Yamaha-AT1B-Yellow-774-0.jpg
|aka              =
|manufacturer    = Yamaha
|parent_company  =
|production      = 1977-1985
|model_year      =
|predecessor      =
|successor        = [[Yamaha AT2]]
|class            = dual-purpose motorcycle
|engine          = 125cc [[two-stroke]] [[single-cylinder]]
|bore_stroke      =
|compression      =
|top_speed        =60 mph
|power            =
|torque          =
|ignition        =
|spark_plug      = {{sparkplug|NGK B8ES}} or {{sparkplug|NGK B9ES}}
|battery          ={{battery|YUASA 12N7-3B}} `70-72<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>
|transmission    =
|final_drive      = {{chain|428x112}} <ref name="wps_street_2019" />
|front_sprocket  = 14T <ref name="wps_street_2019"/>
|rear_sprocket    = 45T <ref name="wps_street_2019"/>
|frame            =
|suspension      =
|brakes          =
|tires            =
|rake_trail      =
|wheelbase        =
|length          =
|width            =
|height          =
|seat_height      =
|dry_weight      =
|wet_weight      =
|fuel_capacity    =
|oil_capacity    =
|recommended_oil= Yamalube 10w-40
|fuel_consumption =
|turning_radius  =
|related          =
|competition      = [[Honda SL175]]<br />[[Kawasaki F6|Kawasaki F6 (125)]]<br />[[Kawasaki KS125]]
|front_tire= {{tire|3.25-18}} `70-72<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_tire= {{tire|3.50-18}} `70-72<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 AT1''' was a 125[[cc]], [[Two stroke|2-stroke]], [[dual-purpose motorcycle]] manufactured by [[Yamaha]] from 1970 through 1972.
The '''AT1''' had a raised rear fender but no raised front fender, a raised exhaust, handlebars with cross members, [[universal tire]]s, and adequate ground clearance for an off-road-[[enduro motorcycle]] or trail motorcycle.
==1969==
<gallery mode='packed-hover'>
File:1969-yamaha-at1-enduro-0.jpg|1969 Yamaha AT1 Enduro
File:1969-yamaha-at1-enduro-1.jpg|1969 Yamaha AT1 Enduro
File:1969-yamaha-at1-enduro-2.jpg|1969 Yamaha AT1 Enduro
File:1969-yamaha-at1-enduro-3.jpg|1969 Yamaha AT1 Enduro
</gallery>
===AT1===
* Start Engine#: AT1-100101
===AT1M===
* Starting Engine#: AT1-300101
==1970==
===AT1B===
<gallery mode='packed-hover'>
File:1970-Yamaha-AT1B-Yellow-774-0.jpg|left|thumb|1970 Yamaha AT1B in Yellow
File:1970-Yamaha-AT1B-Yellow-774-1.jpg|left|thumb|1970 Yamaha AT1B in Yellow
File:1970-Yamaha-AT1B-Yellow-774-2.jpg|left|thumb|1970 Yamaha AT1B in Yellow
File:1970-Yamaha-AT1B-Yellow-774-3.jpg|left|thumb|1970 Yamaha AT1B in Yellow
File:1970-Yamaha-AT1B-Yellow-774-4.jpg|left|thumb|1970 Yamaha AT1B in Yellow
File:1970-Yamaha-AT1B-Yellow-774-5.jpg|left|thumb|1970 Yamaha AT1B in Yellow
File:1970-Yamaha-AT1B-Yellow-774-6.jpg|left|thumb|1970 Yamaha AT1B in Yellow
</gallery>
<br style="clear: left"/>
* Starting Engine#: AT1-120101
===AT1B MX===
* Starting Engine#: AT1-310101
==1971==
===AT1C===
<gallery mode='packed-hover'>
File:1971-Yamaha-AT1-Red-2701-0.jpg|left|thumb|1971 Yamaha AT1 in Red
File:1971-Yamaha-AT1-Red-2701-1.jpg|left|thumb|1971 Yamaha AT1 in Red
File:1971-Yamaha-AT1-Red-2701-2.jpg|left|thumb|1971 Yamaha AT1 in Red
File:1971-Yamaha-AT1-Red-2701-3.jpg|left|thumb|1971 Yamaha AT1 in Red
File:1971-Yamaha-AT1-Red-2701-4.jpg|left|thumb|1971 Yamaha AT1 in Red
</gallery>
<br style="clear: left"/>
*Starting Engine#: AT1-139101
===AT1MX===
* Starting Engine#: AT1-313101
==1972==
==1972==
[[Image:1972-Yamaha-AT1-Orange-0.jpg|left|thumb|1972 Yamaha AT1 125 in Orange]][[Image:1972-Yamaha-AT1-Orange-1.jpg|left|thumb|1972 Yamaha AT1 125 in Orange]][[Image:1972-Yamaha-AT1-Orange-2.jpg|left|thumb|1972 Yamaha AT1 125 in Orange]][[Image:1972-Yamaha-AT1-Orange-3.jpg|left|thumb|1972 Yamaha AT1 125 in Orange]][[Image:1972-Yamaha-AT1-Orange-4.jpg|left|thumb|1972 Yamaha AT1 125 in Orange]][[Image:1972-Yamaha-AT1-Orange-5.jpg|left|thumb|1972 Yamaha AT1 125 in Orange]]
<gallery mode='packed-hover'>
File:1972-Yamaha-AT1-Orange-0.jpg|left|thumb|1972 Yamaha AT1 125 in Orange
File:1972-Yamaha-AT1-Orange-1.jpg|left|thumb|1972 Yamaha AT1 125 in Orange
File:1972-Yamaha-AT1-Orange-2.jpg|left|thumb|1972 Yamaha AT1 125 in Orange
File:1972-Yamaha-AT1-Orange-3.jpg|left|thumb|1972 Yamaha AT1 125 in Orange
File:1972-Yamaha-AT1-Orange-4.jpg|left|thumb|1972 Yamaha AT1 125 in Orange
File:1972-Yamaha-AT1-Orange-5.jpg|left|thumb|1972 Yamaha AT1 125 in Orange
</gallery>
<br style="clear: left"/>
<br style="clear: left"/>
==References==
{{reflist}}
{{motorcycle-stub}}
{{Yamaha}}


[[Category:Yamaha motorcycles|AT1]]
[[Category:1970s motorcycles]]
[[Category:1970s motorcycles]]
[[Category:Dual purpose motorcycles]]
[[Category:125cc displacement motorcycles]]
[[Category:125cc 2-stroke motorcycles]]
[[Category:Single cylinder motorcycles]]
[[Category:Single cylinder 2-stroke motorcycles]]
[[Category:2-stroke motorcycles]]
[[Category:Piston Inlet Port motorcycles]]
[[Category:Enduro-style motorcycles]]

Latest revision as of 20:06, 23 November 2019

1970-Yamaha-AT1B-Yellow-774-0.jpg
Yamaha AT1
Manufacturer
Yamaha
Production 1977-1985
Class dual-purpose motorcycle
Successor Yamaha AT2
Engine
125cc two-stroke single-cylinder
Top Speed 60 mph
Spark Plug NGK B8ES or NGK B9ES
Battery YUASA 12N7-3B `70-72[1]
Final Drive Chain: 428x112 [1]
Front Sprocket 14T [1]
Rear Sprocket 45T [1]
Front Tire 3.25-18 `70-72[1]
Rear Tire 3.50-18 `70-72[1]
Weight
Recommended Oil Yamalube 10w-40
Competition Honda SL175
Kawasaki F6 (125)
Kawasaki KS125
Manuals Service Manual


The Yamaha AT1 was a 125cc, 2-stroke, dual-purpose motorcycle manufactured by Yamaha from 1970 through 1972.

The AT1 had a raised rear fender but no raised front fender, a raised exhaust, handlebars with cross members, universal tires, and adequate ground clearance for an off-road-enduro motorcycle or trail motorcycle.


1969[edit | edit source]

  • 1969 Yamaha AT1 Enduro

  • 1969 Yamaha AT1 Enduro

  • 1969 Yamaha AT1 Enduro

  • 1969 Yamaha AT1 Enduro

AT1[edit | edit source]

  • Start Engine#: AT1-100101

AT1M[edit | edit source]

  • Starting Engine#: AT1-300101

1970[edit | edit source]

AT1B[edit | edit source]

  • 1970 Yamaha AT1B in Yellow

  • 1970 Yamaha AT1B in Yellow

  • 1970 Yamaha AT1B in Yellow

  • 1970 Yamaha AT1B in Yellow

  • 1970 Yamaha AT1B in Yellow

  • 1970 Yamaha AT1B in Yellow

  • 1970 Yamaha AT1B in Yellow


  • Starting Engine#: AT1-120101

AT1B MX[edit | edit source]

  • Starting Engine#: AT1-310101

1971[edit | edit source]

AT1C[edit | edit source]

  • 1971 Yamaha AT1 in Red

  • 1971 Yamaha AT1 in Red

  • 1971 Yamaha AT1 in Red

  • 1971 Yamaha AT1 in Red

  • 1971 Yamaha AT1 in Red


  • Starting Engine#: AT1-139101

AT1MX[edit | edit source]

  • Starting Engine#: AT1-313101

1972[edit | edit source]

  • 1972 Yamaha AT1 125 in Orange

  • 1972 Yamaha AT1 125 in Orange

  • 1972 Yamaha AT1 125 in Orange

  • 1972 Yamaha AT1 125 in Orange

  • 1972 Yamaha AT1 125 in Orange

  • 1972 Yamaha AT1 125 in Orange


References[edit | edit source]

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 2019 Western Power Sports Catalog. Western Power Sports. 2019. 


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