Editing Yamaha TR3

==Intro==
[[Image:Yamaha-TR3.jpg|right|thumb|Yamaha TR3]]
The last 350cc aircooled production roadracer [[Yamaha]] ever produced, the R5 roadbike based TR3 was released in 1972. Changes to the bike including bore and stroke configuration, the engine now sported the 54mm stroke that was to be the mainstay of the TZ range for the next 8 years, a rise in compression ratio, well as a new crank and a 6 speed gearbox replacing the old 5 speed, though as for the TD3, provision to "block out" sixth gear was there. Like it's "little brother" it didn't live entirely up to expectations either, also suffering from detonation and seizures at regular intervals**.  Peak horsepower rose by 2 to 58bhp.

The wheelbase of the TR3 increased by 15mm over the old [[Yamaha TR2|TR2B]] while all other dimensions apart from overall length remained the same.

An interesting point: The some of the "works" TR3 engines from 1972 sported 6 transfer ports, like an F/G model 350. It took Yamaha 7 years to let us all in on the secret !!

The good news was the big news from Yamaha later that year, there was a major change on the way ... water-cooling !!

==1972==
[[Image:1972-Yamaha-TR3-White-7651-0.jpg|left|thumb|1972 Yamaha TR3 in White]][[Image:1972-Yamaha-TR3-White-7651-1.jpg|left|thumb|1972 Yamaha TR3 in White]][[Image:1972-Yamaha-TR3-White-7651-2.jpg|left|thumb|1972 Yamaha TR3 in White]]
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[[Category:Yamaha motorcycles|TR3]]
@@ Line 1: / Line 1: @@
 ==Intro==
-[[Image:1972 Yamaha TR3.jpg|200px|thumb|left|1972 Yamaha TR3]]
 [[Image:Yamaha-TR3.jpg|right|thumb|Yamaha TR3]]
-The last 350cc [[aircooled]] production roadracer [[Yamaha]] ever produced, the [[Yamaha R5|R5]] roadbike based TR3 was released in 1972. Changes to the bike including [[bore]] and [[stroke]] configuration, the engine now sported the 54mm stroke that was to be the mainstay of the TZ range for the next 8 years, a rise in [[compression ratio]], well as a new crank and a 6 speed gearbox replacing the old 5 speed, though as for the TD3, provision to "block out" sixth gear was there. Like it's "little brother" it didn't live entirely up to expectations either, also suffering from [[detonation]] and seizures at regular intervals**.  Peak horsepower rose by 2 to 58[[bhp]].
+The last 350cc aircooled production roadracer [[Yamaha]] ever produced, the R5 roadbike based TR3 was released in 1972. Changes to the bike including bore and stroke configuration, the engine now sported the 54mm stroke that was to be the mainstay of the TZ range for the next 8 years, a rise in compression ratio, well as a new crank and a 6 speed gearbox replacing the old 5 speed, though as for the TD3, provision to "block out" sixth gear was there. Like it's "little brother" it didn't live entirely up to expectations either, also suffering from detonation and seizures at regular intervals**.  Peak horsepower rose by 2 to 58bhp.
 The wheelbase of the TR3 increased by 15mm over the old [[Yamaha TR2|TR2B]] while all other dimensions apart from overall length remained the same.
@@ Line 8: / Line 7: @@
 An interesting point: The some of the "works" TR3 engines from 1972 sported 6 transfer ports, like an F/G model 350. It took Yamaha 7 years to let us all in on the secret !!
-The good news was the big news from Yamaha later that year, there was a major change on the way ... [[water-cooling]] !!
+The good news was the big news from Yamaha later that year, there was a major change on the way ... water-cooling !!
-==Racing success==
-This model enabled Yamaha to capture its first win at the [[Daytona 200]]. The winning TR3 was piloted by Don Emde. This started a streak of 13 consecutive wins at Daytona by Yamaha (1972 ~ 1984). This is a feat that will, more than likely, never be equaled.
 ==1972==
-[[Image:1972-Yamaha-TR3-White-7651-0.jpg|left|thumb|1972 Yamaha TR3 in White]]
+[[Image:1972-Yamaha-TR3-White-7651-0.jpg|left|thumb|1972 Yamaha TR3 in White]][[Image:1972-Yamaha-TR3-White-7651-1.jpg|left|thumb|1972 Yamaha TR3 in White]][[Image:1972-Yamaha-TR3-White-7651-2.jpg|left|thumb|1972 Yamaha TR3 in White]]
-[[Image:1972-Yamaha-TR3-White-7651-1.jpg|left|thumb|1972 Yamaha TR3 in White]]
-[[Image:1972-Yamaha-TR3-White-7651-2.jpg|left|thumb|1972 Yamaha TR3 in White]]
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-{{Yamaha}}
 [[Category:Yamaha motorcycles|TR3]]
-{{Motorcycle
-|name             = Yamaha TR3
-|photo=1972 Yamaha TR3.jpg
-|aka              =
-|manufacturer     = Yamaha
-|parent_company   =
-|production       = 1973
-|model_year       =
-|predecessor      =
-|successor        =
-|class            = Sport Bike
-|engine           = Air-cooled, Parallel twin cylinder
-|bore_stroke      = 63.8mm x 63.8mm
-|compression      =
-|top_speed        =140 mph
-|power            = 35.94 HP (26.8 KW) @ 7000RPM
-|torque           = 28.03 ft/lbs (38.0 Nm) @ 6500RPM
-|ignition         =
-|spark_plug       =
-|battery          =
-|transmission     = Final Drive: Chain <br>
-|frame            =
-|suspension       =
-|brakes           =Front: Drum <br>Rear: Drum
-|front_tire       =
-|rear_tire   	  =
-|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      =
-}}
-The '''[[Yamaha]] TR3''' was a Air-cooled, Parallel twin cylinder Sport Bike [[motorcycle]] produced by [[Yamaha]] in 1973. Max [[torque]] was 28.03 ft/lbs (38.0 Nm) @ 6500 RPM. Claimed [[horsepower]] was 35.94 HP (26.8 KW) @ 7000 RPM.
-==Engine==
-A 63.8mm [[bore]] x 63.8mm [[stroke]] result in a [[displacement]] of just 347.0 cubic centimeters.
-==Chassis==
-Stopping was achieved via Drum in the front and a Drum in the rear.
-==1973 Yamaha TR3==
-[[File:yamaha-tr3-1973-1973-1.jpg|600px|1973 Yamaha TR3]]
-[[File:yamaha-tr3-1973-1973-0.jpg|600px|1973 Yamaha TR3]]
-These production race machines were raced by privateers at the club level and also by Yamaha at the national level. Carrying on the tradition of constructing production racers from street machines, the Yamaha TR3 was based on Yamaha’s R5 350cc twin of 1970.
-[[Category:Sport Bike motorcycles]]
-[[Category:Yamaha motorcycles]]
-[[Category:1970s motorcycles]]