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Nissan Half Leaf - twice the engineering for half the car
1 Jul 2013 at 14:35, by Tom Morgan
image
http://www.expertreviews.co.uk/gallery/news/1300807/nissan-half-leaf-twice-the-engineering-for-half-the-car" onclick="window.open(this.href);return false;
Gallery - Nissan Half Leaf
Nissan's Leaf is one of the first fully electric vehicles we've had the
chance to drive here at Expert Reviews, excluding the bonkers Renault Twizy
quadricycle. Before we took one out on the open road, Nissan put us behind
the wheel of its jaw-dropping Half Leaf demo vehicle. As the name suggests,
it's literally half a car, having been chopped through its centre to reveal
its inner mechanics and electronics. The result is an eye-catching party
piece that shows how much effort Nissan has gone to with its electric
initiative.
As one of the first entirely electric cars on Britain's roads, the Leaf is
currently competing with petrol-electric hybrids like the Toyota Prius.
However, as it was built as an electric vehicle, aspects like battery
placement (spread out across the entire undercarriage) were incorporated
into the design, rather than an afterthought. You can see the orange cover
in our photos, peeking out from behind the dissected chassis.
The Half Leaf is more than a design statement - it's also an impressive
piece of engineering. The build process was far more complicated than simply
taking a circular saw to a production car. Starting with a brand new Leaf
taken right off the factory floor, Nissan's engineers stripped it down to
the outer shell, removing every mechanical and electrical component.
The entire car was modelled with a CAD program, detailing every single
component and working out where a cut could be made. A 25 degree angle was
then laser aligned through the car to show the mechanics where to cut - the
angle was chosen specifically to show off as much of the car as possible,
whether you're watching from a distance or sat behind the wheel. The chassis
was cut, then any holes were filled and covered to maintain as much
structural rigidity as possible. Each component was then cut individually
and fitted in place, until the car had been rebuilt
The bisected windscreen was a first for both Nissan and the company hired to
perform the cut. A water jet cutter was chosen, but the procedure cracked
the glass on the first attempt. The second time was a charm, leaving no
sharp edges and a smooth, angled cut, which was then locked in place to
complete the car.
Because Nissan wanted people to be able to drive the Half Leaf, some
concessions had to be made in order to get it moving. As the bodywork is
missing from one side of the chassis, it puts more pressure on the left side
of the suspension, causing the car to lean. Nissan's engineers had to weld
the suspension in place on both sides to keep it level. This makes for a
bumpy ride, but one that's only interrupted by road noise on account of the
silent electric engine.
Being able to see the very corner of the car makes it feel like you're
driving a Go Kart at times, particularly with the Leaf's startling
acceleration. Unlike a combustion engine, which delivers its power
gradually, the electric motor puts down all its power at once - at 80kw it's
not going to outpace a Ferrari, but it launches forwards surprisingly
quickly.
News editor Tom gets behind the wheel
Naturally, the Half Leaf isn't road legal - it lacks a complete set of brake
lights, would never pass NCAP safety tests and has a compromised chassis.
The air conditioning and heating systems have been electronically disabled,
as not only has the ducting has been removed, there's no cabin to keep the
air to temperature.
Unsurprisingly, the Half Leaf isn't going into production - Nissan only has
one, and that's usually kept in the company's design centre. However, we'll
be bringing you a more in-deprh road test of the Leaf you'll actually be
able to buy later on today.
[© expertreviews.co.uk]
http://www.t3.com/news/long-range-electric-cars-possible-but-not-viable-says-nissan-engineer" onclick="window.open(this.href);return false;
Ultra long-range electric cars possible but not viable says Nissan Engineer
3 Jul 2013 by Thomas Tamblyn A Senior Engineer at Nissan has said that
while ultra long-range electric vehicles are indeed possible (500miles and
upwards) they'd be too heavy and too ...
1 Jul 2013 at 14:35, by Tom Morgan
image
http://www.expertreviews.co.uk/gallery/news/1300807/nissan-half-leaf-twice-the-engineering-for-half-the-car" onclick="window.open(this.href);return false;
Gallery - Nissan Half Leaf
Nissan's Leaf is one of the first fully electric vehicles we've had the
chance to drive here at Expert Reviews, excluding the bonkers Renault Twizy
quadricycle. Before we took one out on the open road, Nissan put us behind
the wheel of its jaw-dropping Half Leaf demo vehicle. As the name suggests,
it's literally half a car, having been chopped through its centre to reveal
its inner mechanics and electronics. The result is an eye-catching party
piece that shows how much effort Nissan has gone to with its electric
initiative.
As one of the first entirely electric cars on Britain's roads, the Leaf is
currently competing with petrol-electric hybrids like the Toyota Prius.
However, as it was built as an electric vehicle, aspects like battery
placement (spread out across the entire undercarriage) were incorporated
into the design, rather than an afterthought. You can see the orange cover
in our photos, peeking out from behind the dissected chassis.
The Half Leaf is more than a design statement - it's also an impressive
piece of engineering. The build process was far more complicated than simply
taking a circular saw to a production car. Starting with a brand new Leaf
taken right off the factory floor, Nissan's engineers stripped it down to
the outer shell, removing every mechanical and electrical component.
The entire car was modelled with a CAD program, detailing every single
component and working out where a cut could be made. A 25 degree angle was
then laser aligned through the car to show the mechanics where to cut - the
angle was chosen specifically to show off as much of the car as possible,
whether you're watching from a distance or sat behind the wheel. The chassis
was cut, then any holes were filled and covered to maintain as much
structural rigidity as possible. Each component was then cut individually
and fitted in place, until the car had been rebuilt
The bisected windscreen was a first for both Nissan and the company hired to
perform the cut. A water jet cutter was chosen, but the procedure cracked
the glass on the first attempt. The second time was a charm, leaving no
sharp edges and a smooth, angled cut, which was then locked in place to
complete the car.
Because Nissan wanted people to be able to drive the Half Leaf, some
concessions had to be made in order to get it moving. As the bodywork is
missing from one side of the chassis, it puts more pressure on the left side
of the suspension, causing the car to lean. Nissan's engineers had to weld
the suspension in place on both sides to keep it level. This makes for a
bumpy ride, but one that's only interrupted by road noise on account of the
silent electric engine.
Being able to see the very corner of the car makes it feel like you're
driving a Go Kart at times, particularly with the Leaf's startling
acceleration. Unlike a combustion engine, which delivers its power
gradually, the electric motor puts down all its power at once - at 80kw it's
not going to outpace a Ferrari, but it launches forwards surprisingly
quickly.
News editor Tom gets behind the wheel
Naturally, the Half Leaf isn't road legal - it lacks a complete set of brake
lights, would never pass NCAP safety tests and has a compromised chassis.
The air conditioning and heating systems have been electronically disabled,
as not only has the ducting has been removed, there's no cabin to keep the
air to temperature.
Unsurprisingly, the Half Leaf isn't going into production - Nissan only has
one, and that's usually kept in the company's design centre. However, we'll
be bringing you a more in-deprh road test of the Leaf you'll actually be
able to buy later on today.
[© expertreviews.co.uk]
http://www.t3.com/news/long-range-electric-cars-possible-but-not-viable-says-nissan-engineer" onclick="window.open(this.href);return false;
Ultra long-range electric cars possible but not viable says Nissan Engineer
3 Jul 2013 by Thomas Tamblyn A Senior Engineer at Nissan has said that
while ultra long-range electric vehicles are indeed possible (500miles and
upwards) they'd be too heavy and too ...
