Yamaha FS1

Last updated

Yamaha FS1
Sweet 16 Fizzy.Yamaha FS1E. - Flickr - mick - Lumix.jpg
Manufacturer Yamaha
Class Moped
Engine 49 cc (3.0 cu in) two stroke single
Transmission 4-speed manual with chain final drive
Brakes Drum, front and rear; 110mm single leading shoe
Wheelbase 1.160 m (3 ft 9.7 in)
DimensionsL: 1.775 m (5 ft 9.9 in)
W: .555 m (1 ft 9.9 in)
H: .935 m (3 ft 0.8 in)
Fuel capacity6.5 L (1.4 imp gal; 1.7 US gal)

The FS1 is a Yamaha moped of the 1970s. Various letter suffixes were added to indicate model variation to suit local regulations, such as the FS1-E for England, FS1P/DX NL and others.

Contents

FS1-E UK model

The FS1-E was the UK model. Machines registered in the UK from 1 August 1977 were restricted to a maximum of 31 mph (50 km/h). [1]

Design

Originally the FS1-E was built as a five-speed transmission light motorcycle. It was originally called the FS1. Due to the regulations in Europe, the FS1-E was downtuned with a four-speed transmission.

The Yamaha FS1-E has a 49 cc (3.0 cu in), single cylinder, two-stroke, air-cooled, rotary disc-valved engine with a four-speed gearbox. The FS1-E was the FS1 with the suffix E, which stood for England (differing from the models sold in other countries as the FS1-E had more cycle parts in common with other UK-imported Yamaha models). Yamaha introduced various improvements such as a front disc brake (FS1-E DX model) over the years, and later an autolube model with a two-stroke oil tank and oil pump, with no need to manually mix two-stroke oil into the fuel tank.

About 200,000 were produced for the UK market. An award winning short film was produced in 2006 and is available entitled 'Fizzy Days' encompassing the bikes and the era.[ citation needed ]

Pedals

The FS1-E had the ability to be powered by pushbike type pedals since this was a legal requirement for registration as a moped in the United Kingdom and some other European countries at the time.

The special pedal cranks allowed both pedals to be rotated forward so that the pedals would form motorcycle-style footrests in normal operation. To engage the pedals, the left-hand pedal crank could be rotated 180 degrees backwards and locked, and a drive gear engaged allowing the user to pedal. A short chain connected the pedal drive to the main engine-chain drive system. Pedalling was hard work for the rider: there was no freewheel and the pedal gearing was very low. The engine could be started with pedal drive engaged, causing the pedals to rotate under engine power when the bike was in gear. In practice, the cam and shaft arrangement to engage the pedals frequently seized (in normal operation, a rider would very rarely engage pedal-drive as it was less tiring to push than to pedal).

The pedals were designed by Henk Dullens, a former employee of "Het Motorpaleis" in The Netherlands. The system was designed for a Yamaha F5, which was basically the ancestor for the FS1-E.

Specification

Engine: Two-stroke single cylinder rotary disc valve induction, four gears, running on a 20:1 mix of petrol and two-stroke oil.

Frame: pressed steel tubular backbone type.

Electrics : Magneto ignition with integral 6V AC for the main running lights (including high and low beam on a switch). The indicators, brake lights, neutral light and horn ran separately on 6 v DC from a three-cell lead acid battery that received a trickle charge from the magneto. On most models the three position ignition switch (on a key providing off, run and lights) was mounted on the L/H side panel, however the switch was moved to the conventional position between the handlebars on the FS1-E DX (front disc brake equipped model) and later FS1-E models.

The right hand side panel contains a basic toolkit in a plastic case, pliers, 3 spanners, double ended screwdriver, plug spanner.

The competition

The second most popular moped of this era came from Honda, the SS50. They had a similar speed, and thanks to their 4-stroke design were cleaner, more economical and potentially longer lived though without quite the same acceleration. All suffered the same legislative fate in August 1977, when speed restrictions were introduced. For a short time after this date some smaller manufacturers (particularly Italian) brought in machines that could easily be derestricted without the use of any additional parts or any machining.

Notes

  1. "Riding a motorcycle, moped or motor tricycle - GOV.UK". www.direct.gov.uk. Retrieved 19 October 2016.

Related Research Articles

<span class="mw-page-title-main">Two-stroke engine</span> Internal combustion engine type

A two-strokeengine is a type of internal combustion engine that completes a power cycle with two strokes of the piston during one power cycle, this power cycle being completed in one revolution of the crankshaft. A four-stroke engine requires four strokes of the piston to complete a power cycle during two crankshaft revolutions. In a two-stroke engine, the end of the combustion stroke and the beginning of the compression stroke happen simultaneously, with the intake and exhaust functions occurring at the same time.

<span class="mw-page-title-main">Freewheel</span> Mechanism which disconnects a driveshaft from a faster-rotating driven shaft

In mechanical or automotive engineering, a freewheel or overrunning clutch is a device in a transmission that disengages the driveshaft from the driven shaft when the driven shaft rotates faster than the driveshaft. An overdrive is sometimes mistakenly called a freewheel, but is otherwise unrelated.

<span class="mw-page-title-main">Yamaha XS 650</span> Yamaha motorcycle

The Yamaha XS650 is a mid-size motorcycle made by Yamaha Motor Company. The standard model was introduced in October 1969,and produced through 1979. The "Special" cruiser model was introduced in 1978 and produced through 1985. The XS650 began with the 1955 Hosk SOHC 500 twin. After about 10 years of producing 500 twin, Hosk engineers designed a 650 cc twin. Later the Hosk company was acquired by Showa Corporation, and in 1960 Yamaha had bought Showa with Hosk's early design of 650 cc twin.

<span class="mw-page-title-main">Yamaha FJ</span> Type of motorcycle

The Yamaha FJ1100 and FJ1200 are sport touring motorcycles that were produced by Yamaha between 1984 and 1996.

<span class="mw-page-title-main">Motorcycle engine</span> Engine that powers a motorcycle

A motorcycle engine is an engine that powers a motorcycle. Motorcycle engines are typically two-stroke or four-stroke internal combustion engines, but other engine types, such as Wankels and electric motors, have been used.

<span class="mw-page-title-main">Motorized bicycle</span> Bicycle with an attached motor or engine and transmission

A motorized bicycle is a bicycle with an attached motor or engine and transmission used either to power the vehicle unassisted, or to assist with pedalling. Since it sometimes retains both pedals and a discrete connected drive for rider-powered propulsion, the motorized bicycle is in technical terms a true bicycle, albeit a power-assisted one. Typically they are incapable of speeds above 52 km/h (32 mph).

<span class="mw-page-title-main">Phillips Panda</span>

The Phillips Panda was one of a number of mopeds produced by the Phillips Cycles company of England in the 1950s and early 1960s. The factory also produced the slightly more expensive Phillips Gadabout models.

<span class="mw-page-title-main">Yamaha QT50</span>

The Yamaha QT50 Yamahopper was produced by the Yamaha Motor Company from 1979 through 1992. QT50s were popular in the late 1970s and 1980s, These small motorcycles are easy to ride, maintain, and are fuel efficient. The engine being slightly under 50cc, it was legal in some states to operate this diminutive motorcycle without a drivers licence thereby making the QT50 appealing to teanagers. The QT50 motorcycle resembles contemporary Mopeds and shares some features with Scooters.

<span class="mw-page-title-main">Yamaha DT200</span>

The Yamaha DT200 is a dual-purpose motorcycle manufactured during the 1980s, 1990s, and continues into the 2000s (decade) by the Yamaha Motor Company. Though never imported into the US, the rest of the world, including Canada, received some of these models. The DT200LC began production in 1983bc. It also was very similar to the DT125LC. This model continued production until 1988.Then, in 1989 a totally new model was introduced, DT200R, as well as a similar DT125R. In Canada, the DT125LC/R was never imported.

Motorcycle components and systems for a motorcycle are engineered, manufactured, and assembled in order to produce motorcycle models with the desired performance, aesthetics, and cost. The key components of modern motorcycles are presented below.

<span class="mw-page-title-main">Yamaha Royal Star Venture</span>

The Yamaha Royal Star Venture is a luxury touring motorcycle built by the Yamaha Motor Company. It is a premier touring motorcycle manufactured in two forms by Yamaha from 1983 to 1993 and from 1999 to 2013.

<span class="mw-page-title-main">Yamaha RD500LC</span> Type of motorcycle

The Yamaha RD500LC is a high-performance, two-stroke sports motorcycle, also known as the RZ500 in Canada and Australia. A lightened but detuned version known as the RZV500R was developed for the Japanese home market. Strict United States Environmental Protection Agency regulations meant that the RZ500 was not available for sale in that country. Produced for a short period between 1984 and 1986 it has become a sought after collector's machine.

<span class="mw-page-title-main">Yamaha RX 100</span> Type of motorcycle

The Yamaha RX 100 was a two-stroke motorcycle made by Yamaha from 1985 to 1996 with technical collaboration and distributed in India by the Escorts Group. At the initial stage, Yamaha Japan was exporting all bikes from Japan to India. After 1990, Escorts started production in India, with some parts being imported from Japan.

<span class="mw-page-title-main">Yamaha XS400</span> Type of motorcycle

The Yamaha XS400 was produced by Yamaha from 1976 to 1983. The XS250 & XS360 are nearly identical variations of the same XS400 platform. Special, Special II, and Heritage badges denoted "factory custom" trim lines.

<span class="mw-page-title-main">Compression release</span>

A compression release mechanism works to ease the starting of internal combustion engines by allowing them to spin up to starting speed without having to work against the pumping action of the pistons. It does this through a release valve that is incorporated within the cylinder head that vents the cylinder pressure to the outside atmosphere until the engine has sufficient momentum to overcome it. At that point the valve closes and the ignition is engaged.

<span class="mw-page-title-main">Motorcycle transmission</span> Transmission for motorcycle applications

A motorcycle transmission is a transmission created specifically for motorcycle applications. They may also be found in use on other light vehicles such as motor tricycles and quadbikes, go-karts, offroad buggies, auto rickshaws, mowers, and other utility vehicles, microcars, and even some superlight racing cars.

<span class="mw-page-title-main">Honda SS50</span> Type of motorcycle

The Honda SS50 is a 50 cc (3.1 cu in) motorcycle manufactured by the Honda Motor Company.

The Austin 15-20 is the smaller-engined of the almost identical pair of new cars announced by Herbert Austin in February 1906. A very complete catalogue with detailed specifications was issued at the same time. As well as the engine's smaller bore the 15-20 differed from the 25-30 by being only available with a live rear axle and not chain-drive. Otherwise the specifications were the same, the very minor differences are detailed below.

<span class="mw-page-title-main">Car controls</span> Car parts used to control the vehicle

Car controls are the components in automobiles and other powered road vehicles, such as trucks and buses, used for driving and parking.

<span class="mw-page-title-main">Yamaha TZ 250</span> Type of motorcycle

The Yamaha TZ 250 was a commercially available racing motorcycle with a watercooled, two-stroke, 250 cc engine produced by the Japanese manufacturer Yamaha.

References