Amazingly, the world's first outboard was electric. In May 1880,
a Parisian electrical precision instrument maker, Monsieur Gustave
Trouvé, patented a small 5 kg. electric motor and described
its possible applications (Patent N° 136,560). At first this
concerned the propulsion of boats, where Trouvé envisaged
two such motors each directly driving a paddle wheel on either
side of the hull. After this he progressed to a multi-bladed propeller.
Modifications to this master patent date from August 1880, then
March, July, November and December 1881.
To quote: "It is the rudder
containing the propeller and its motor, the whole of which is
removable and easily lifted off the boat...."
With this invention, not only can
Trouvé lay claim to the world's first marine outboard engine,
but in taking the same motor and adapting it as the drive mechanism
of a Coventry-Rotary pedal tricycle or velocipede, Trouvé
also pioneered the world's first electric vehicle.
On 1st August 1881, Trouvé
made his benchmark report to the French Academy of Sciences that
"I had the honour to submit to this Academy, in the session
of 7th July 1880, a new electric motor based on the eccentricity
of the Siemens coil flange. By successive studies, which have
allowed me to reduce the weight of all the components of the motor,
I have succeeded in obtaining an output which to me appears quite
remarkable.
"A motor weighing 5 Kg, powered
by 6él of Planté producing an effective work of
7kgm per second, was placed, on the 8th April, on a tricycle whose
weight, including the rider and the batteries rose to 160 Kg and
recorded a speed of 12 km/h.
"The same motor, placed on
the 26 May in a boat of 5m50 (18ft) long by 1m20 (4ft) beam, carrying
three people, gave it a speed of 2m50 (2.7 yards) in going down
the Seine at Pont-Royal and 1m50 (1.6 yards) in going back up
the river. The motor was driven by two bichromate of potassium
batteries each producing 6él and with a three-bladed propeller.
"On the 26th June 1881, I
repeated this experiment on the calm waters of the upper lake
of the Bois de Boulogne, with a four-bladed propeller 28 cm (11
in.) in diameter and 12 él of Ruhmkorff-type Bunsen plates,
charged with one part hydrochloric acid, one part nitric acid
and two parts water in the porous vase so as to lessen the emission
of nitrous fumes.
"The speed at the start, measured
by an ordinary log, reached 150 metres in 48 seconds - or little
more than 3 metres (3.2 yards) per second; but after three hours
of functioning, this had fallen to 150 metres (164 yards) in 55
seconds and after five hours, this had further fallen to 150 metres
(164 yards) in 65 seconds.
Thus Gustave Trouvé made
the first unofficial outboard speed record of 10.8 km/h (6.7 mph).
He called his boat Le Téléphone, after an invention
patented only five years before by Dr. Alexander Graham Bell.
Almost one century later...
In December 1988, almost one century
later, Fiona, the 70-year-old Countess of Arran, was persuaded
by Kevin Desmond, then Chairman of the Electric Boat Association,
to make an attempt on the World Electric Water Speed Record. A
record of 45.76 mph (73.63 km/h) for the Measured Kilometre had
been set back in 1978 by the 14ft (4m27) Miss Nickel Eagle, powered
by Eagle-Picher nickel-zinc batteries driving a 94hp General electric
motor. Since this record had only been homologated by the APBA
and not by the UIM, for the Arran attempt, a new records category
was created and voted in down at Monaco, but still retaining the
requirement that the time elapsing between the two runs (including
battery recharging) must not exceed 30 minutes. Her Ladyship's
friend, designer Lorne Campbell, came up with a profile for a
15ft (4m60) three-point hydroplane, built in Kevlar and ply composite
by Nick Barlow and weighing only 210 lbs (95kg). The four, radial
armature permanent neodymium magnet motors, designed built and
tested by Cedric Lynch, self-taught 33-year-old engineer from
Potters Bar, would give a total 60hp, whilst 12 swift-yield energy
lead-acid jet aircraft starter batteries were provided by Hawker
Energy Products. A Cableform controller and special Morganite
graphite-silver brushes added to the innovation.
Following 47mph (75 km/h) trials
on the Welsh Harp lake, North London, Lady Arran towed An Stradag
(Gaelic for "the spark") up to the Holme Pierrpont Watersports
Centre, near Nottingham and on 22nd November 1989, with a 30-knot
wind gusting down the rowing course, Her Ladyship set up a two-way
average of 50.825 mph (81.777 km/h). Between the two runs, a Benning
Belatron traction charger replenished 80% battery energy in just
12 minutes.
Altough An Stradag could well have
increased its own record to between 60-70 mph (90-110 km/h), lack
of sponsorship for this pioneer powerboat relegated it - for the
time being - first to the National Motorboat Museum in Essex and
then to the Lakeland Motor Museum in Cumbria.
There were however many spin-offs,
in particular UIM Article 592 where the Sporting Commission proposed
that electrically propelled boats were accepted as an International
Series divided into two classes - battery-powered and solar-powered.
This proposal was voted in at the UIM General Assembly on 17th
March 1991 (22 votes for, 5 abstentions). In July a contest was
held on the River Po, Italy, to further establish rules for racing.
In October 1991, Lady Arran challenged both Fabio Buzzi of Italy
and Bob Nordskog of America to build powerboats that would break
her two-year-old Record. To-date these gentlemen appear to have
been too busy to respond.
The electric power boat challenge
was however taken up in Washington State, USA. The original idea
was to get the Electric Speed Record back for the US. Led by
veteran powerboat driver John Paramore - a small group of home-built
electric car enthusiasts - Burton Gabriel, Fred Saxby, Don Crabtree
and Dave Cloud, joined forces with another longtime powerboat
speedster Norm Boddy.
To get things going, Paramore obtained
ABPA permission to race electric boats head-to-head as an exhibition
event at scheduled outboard races around their home state of Washington.
For 1994, they chose five races sites and ran 8 two-mile (three-kilometre)
sprint races from June to September. Even after running at speeds
between 30-40 mph (50-60 km/h), the electric raceboats had power
surplus at the end of each race. By the end of the series, they
had publicly proved that electric powerboats could plane, corner
buoys and tramp up to speeds of 50mph (80 km/h).
Finally, in the Kilometre Trials
held on 8th October 1994 at Lincoln City, Oregon, Norm Boddy of
Edmonds Washington capped the season by setting a new World Electric
Boat Record, driving his runabout Hardly Normal to a speed of
55.913 mph (89.964 km/h). His motor was a 48-volt Prestolite forklift
unit mounted on a Mercury Speedmaster outboard racing lower unit.
The spark is re-kindled...
In 2004, Don Sidebottom of the
Lakeland Motor Museum decided to put several of his exhibits up
for sale. Among them was An Stradag.
During the Spring and early Summer
of 2005, several of An Stradag’s original team began to
consider how they might take up the challenge where it had been
left off some sixteen years before...and achieve the original
target speed of 75-80 mph, so bringing the Record back to GB.
And this meant doing what they had original planned: increasing
the engine power, new batteries, finer-tuned propellers and streamlined
cowling.
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