Difference between revisions of "Kawasaki W3650"

From CycleChaos
Jump to navigation Jump to search
(adding recommended_oil)
(Redirected page to Kawasaki W3 650)
Tag: New redirect
 
Line 1: Line 1:
{{Motorcycle
#Redirect [[Kawasaki W3 650]]
|name            = [[Kawasaki]] W3650
|photo=Kawasaki-W3.jpg
|aka              =
|manufacturer    = Kawasaki
|parent_company  =
|production      = 1973 -
|model_year      =
|predecessor      =
|successor        =
|class            =
|engine          = Four stroke, parallel twin cylinder, OHV
|bore_stroke      =
|compression      = 9.0:1
|top_speed        =
|power            =
|torque          =
|fuel_system      =
|ignition        = Battery ignition
|spark_plug      =
|battery          =
|transmission    = 4 Speed
|frame            = Steel tube duplex cradle
|suspension      =Front: Telescopic forks <br>
Rear: Swing arm
|brakes          =Front: Mechanical drum <br>Rear: Mechanical drum
|front_tire      = {{tire|3.25-18}}
|rear_tire    = {{tire|4.00-18}}
|rake_trail      =
|wheelbase        = 1415 mm / 55.7 in
|length          =
|width            =
|height          =
|seat_height      =
|dry_weight      = 181 kg / 399 lbs
|wet_weight      =
|fuel_capacity    = 15 Liters / 4.0 US gal
|oil_capacity    =
|recommended_oil=K-tech 10W-40
|fuel_consumption =
|turning_radius  =
|related          =
|competition      =
}}
 
 
 
==Engine==
The engine was a Air cooled cooled Four stroke, parallel twin cylinder, OHV. The engine featured a 9.0:1 [[compression ratio]]. 
 
==Chassis==
It came with a 3.25-18 front [[tire]] and a 4.00-18 rear tire. Stopping was achieved via Mechanical drum in the front and a Mechanical drum in the rear. The front suspension was a  Telescopic forks while the rear was equipped with a Swing arm. The W3650 was fitted with a 15 Liters / 4.0 US gal fuel tank. The bike weighed just 181 kg / 399 lbs. The wheelbase was 1415 mm / 55.7 in long. 
== Photos ==
[[File:Kawasaki-W3.jpg|600px|Kawasaki W3650]]
[[File:Kawasaki-W3-650RS.jpg|600px|Kawasaki W3650]]
[[File:Kawasaki-W3-650.jpg|600px|Kawasaki W3650]]
 
== Overview ==
 
Kawasaki W3 650
 
 
 
 
 
 
 
 
 
 
 
 
 
The history of the W1 can be traced back to
1960 and the early K1, a motorcycle developed by the Japanese motorcycle meguro.
Meguro had first started producing motorcycles back in 1909 and had modeled the
K1 on the English BSA A7 as a replacement for their single cylinder Meguro Z7.
 
It was early days, and most Japanese motorcycle
manufacturers at the time were basically building bikes copied from American and
European models, particularly in the large displacement categories.
For its day, the K1 was an advanced design
and showcased modern-day manufacturing techniques with its Air-Cooled ,
4-stroke, Twin OHV 496cc engine mounted in a double-cradle frame.
 
 
 
 
In 1960, Meguro Works entered into a business
relationship with Kawasaki Aircraft Co.,Ltd., leading to a full merger in 1963.
Therefore, although the K1 was developed and produced by Meguro, selling it was
left to Kawasaki Motor Sales Co., the forerunner of Kawasaki Motorcycle Co.,Ltd.
At the time, the Kawasaki engineers were so deeply engaged in the development of
a 4-stroke engine for small cars that they had no time to develop anew
motorcycle engine. But by the end of 1962 the four-wheel project had ended and
some of these car engineers transferred to Meguro and tool over the project.
There were two projects that the developers had to tackle: the SG(a
single-cylinder 250cc OHV) and the K1.
For both projects, ex-Meguro engineers kept
working on the task of chassis development, while the SG and K1 engines were
developed by the ex-Kawasaki engineers. Since the K models were still in the
transition stage from Meguro to Kawasaki, there were many problems associated
with technology transfers and maintenance. However, work proceeded at the same
time on development of a successor to the K1\ the new W1. At the time, sales
objectives were concentrated on receiving orders for police patrol motorcycles
intended for guard duties during the 1964 Tokyo Olympics. Since there was no
time to develop a new engine, or even to remodel an existing one, there was no
choice but to use the K1 model as it was. However, the engineers still wanted to
overcome some basic design flaws in the K1 engine. Because the sales side wanted
to maintain the impressive appearance and dignified look of the K1, it was
decided to remodel the engine only, and in 1965 the remodel the engine only, and
in 1965 the remodeled K1 was introduced as the K2. (The changes included
increased oil pump capacity, improved crankshaft bearings, etc. The Y-shape
cover, the distinctive feature of the W models, was adopted at this stage.)
 
However, both the K1 and K2still shared the basic
weak points of the BSA A7. The K2 was exported to the US for a test in response
to the expanding American market for 4-stroke motorcycles. Unfortunately, it was
rejected for a lack of power.
The answer was the W1 which was developed as a
large, high-performance, 4-stroke based on the K2. With this new model, the
basic problems found in the lubrication system (already improved in the K2)and
the weakness in the crank's big end durability was solved by going to a built-up
crank. But their was insufficient time to implement the intended changes in the
valve train
(making it an O.H.C.).As far as the frame
concerned, the conventional tubular frame from the
BSA A7 was used unchanged.
 
 
 
The frame building technology that Kawasaki
inherited from Meguro was the quite advanced for its time, and most f the models
following the K1 adopted tube frames because they were comparatively easy to
make. Even though Kawasaki had developed a 4 stroke engine much earlier, the
K1,K2 and W1 were typical 4-stroke motorcycle models for their day and were, so
to speak, textbook models reflecting the then-current design and production
technologies.
The W series entry into the US market was
rather unsuccessful because it was too similar to the K models in basic
structure and lacked a feeling or impression of being "new". The W models also
mimicked too much the look of the BSA A7 for an American tastes, even though
internally the engine was much improved from the BSA.
 
The W1 engine featured the larger bore of the K
models and included a separate primary drive and transmission. The frame welding
techniques came directly from the K models. Prior to the
W1 Kawasaki only sold 2-strokes on the US market,
but with the debut of the W1 it joined Honda in becoming one of the first
Japanese motorcycle manufacturers to produce 4-strokes. While Honda had produced
only 4-strokes from the beginning, Kawasaki's entry into the US the market was
based on predictions of increased sales for large displacement 4-strokes in the
near future.
The 624cc engine of the W1 was one of the first
large-displacement Japanese motorcycles.
However, the way motorcycles were used in
America was quite different than expected and the W1 was found "unsuitable" for
the American market. On the other hand, in Japan it was well received and became
famous for its unique OHV vertical twin sound and individual style.
 
Source
 
 
 
 
 
 
{|  class="wikitable"
|-
!Make Model
|Kawasaki W3 650
|-
!Year
|1973 -
|-
!Engine Type
|Four stroke, parallel twin cylinder, OHV
|-
!Displacement
|624 cc / 38 cu-in
|-
!Bore X Stroke
|74 х 72.6mm
|-
!Cooling System
|Air cooled
|-
!Compression
|9.0:1
|-
!Induction
|Mikuni VM31 carburetor
|-
!Ignition
|Battery ignition
|-
!Starting
|Kick
|-
!Max Power
|53 hp / 39 KW@ 7000 rpm
|-
!Max Torque
|5.7 kgf-m @ 5500 rpm
|-
!Transmission
|4 Speed
|-
!Final Drive
|Chain
|-
!Frame
|Steel tube duplex cradle
|-
!Front Suspension
|Telescopic forks
|-
!Rear Suspension
|Swing arm
|-
!Front Brakes
|Mechanical drum
|-
!Rear Brakes
|Mechanical drum
|-
!Front Tire
|3.25-18
|-
!Rear Tire
|4.00-18
|-
!Wheelbase
|1415 mm / 55.7 in
|-
!Dry Weight
|181 kg / 399 lbs
|-
!Fuel Capacity
|15 Liters / 4.0 US gal
 
|}
== External Links ==
* http://www.khi.co.jp/mcycle/museum/w1/history/index_e.html
 
[[Category:Kawasaki motorcycles]]

Latest revision as of 19:37, 21 November 2019

Redirect to:

Retrieved from "https://www.cyclechaos.com/w/index.php?title=Kawasaki_W3650&oldid=190482"