Nembo Super 32 Rovescio Motorcycle

25 Апр 2015 | Author: | Комментарии к записи Nembo Super 32 Rovescio Motorcycle отключены
Nembo Motociclette Super 32

Nembo Super 32 Rovescio

This is the first in a new series on written by the talented Jason Jason is a writer, an avid a Ducati …-hard, and a shadetree based in Montreal. He’s the of a a unique website showcases the history of rare and motorcycles from around the

Conservatism runs strong in design and anything that the mould is sure to garner its share of attention. You have opportunities for improvement at your – you could redesign the suspension Vyrus), the chassis (Gurney or you could fit an unusual engine Veen OCR). The Super 32 built by tiny Roman Nembo Motociclette, is just an iconoclastic machine.

It is a motorcycle literally turns engine on its head – because designer Sabatini decided he could a better motor by flipping it down.

Inverted engines, the crankshaft is placed above the are nothing new. Piston have been using down engine designs for the part of a century. By placing the and heads below the crankcase you can the mounting point of the propeller while lowering the height of the You get better ground clearance via the prop and better visibility the lower cowl, if the engine is of the cockpit.

You also shift the of gravity considerably, which can aid in combat and aerobatic aircraft.

wartime designs used as their excuse for an inverted – the inverted Daimler-Benz DB600-series allowed the placement of a 20mm within the centre of the propeller A reduction gear was used so the was below the crank, allowing the of the cannon in the vee of the engine to fire the hollow propshaft. This room above the crankcase for two machine guns.

An inverted has only been installed a motorcycle once before. A inverted inline-four was built as a by French company MGC in 1939, the engine mounted longitudinally in the It covered a mere (and 666 kms of testing with a sidecar being mothballed – history and the outbreak of the Second World War put the on hold, never to be resumed.

Building an upside down isn’t as simple as flipping an existing motor (though has been done on occasion). A of modifications are required to keep the lubricated. All inverted engines to be dry sump designs, where the oil is in a separate tank and fed to key lubrication in the engine. Multiple oil pickups to be placed in key locations within the to scavenge the oil without allowing it to in crevices.

The cylinders need to be separately from the block and significant liner protrusions the crankcase, so that oil will around them, not pour them. Some older engines need to be checked and their lower cylinders of oil before starting due to oil seeping the pistons – if not, you risk up the motor by hydrolocking the cylinders.

In to unique lubrication considerations, the system of an inverted engine to be designed to accommodate the upside combustion chambers – fuel can work against gravity, but can’t.

So an inverted engine sense in prop-driven aircraft – but why use it in a motorcycle? According to Sabatini, the is twofold: structural and aesthetic. The of an engine are the most rigid of the structure – if you are using the engine as a member, you generally want to the chassis to the crankcase.

If you use the heads, are more conveniently placed up you need to reinforce them Sabatini wanted to get the best of – with the crankcase up top, he exploit the inherent rigidity of the and build a minimal frame them.

He could also alter the centre of gravity of the – contrary to popular belief, an extremely low centre of gravity is not the and today’s thought runs mass centralization, rather lowering the CG. A bonus effect is the cylinders are better exposed to air – the engine runs cooler and the won’t get cooked.

The second consideration was purely Sabatini lamented the passing of the beauty of an exposed, air-cooled in favour of shrouded liquid-cooled Thus the Nembo engine is to be A. air-cooled and B. beautiful.

This desire extends into the of the motorcycle itself – only a roadster would suit desire for classic mechanical with his unusual engine as the

Bleeding edge high engine design… is clearly not the of the exercise. Aside from air/oil-cooled, the Nembo engine is an triple with a single cam and two valves per cylinder. It is fuel but via a large intake plenum a single throttle body an automotive engine instead of the throttle bodies you’ll find on most performance-oriented engines.

Maximum volumetric and high-rpm power isn’t the aim – a usable spread of power for the is. The engine makes loads of across the board simply by of being so damned huge – ain’t no substitute for cubic and the Nembo makes plenty of while remaining relatively The claimed torque range a stout 119 lb/ft for the 1814cc and a staggering 177 lb/ft for the 2097cc

For comparison, the 2294cc Triumph III triple makes about and just over 160 lb/ft. It weighs 700 pounds… dry.

from being upside the cylinder heads are also from traditional bike – the intake is at the front, the exhaust at the The exposed plenum is set into the of oncoming air which keeps the components from getting soaked. Cylinders are individually with fine cooling and are reminiscent of one half an air-cooled flat-six when viewed the front.

The engine cases are with milled billet and a massive timing chain on the left side – the result remarkably like an upside AJS 7R engine, which is to say quite There is no denying the visual of the design, and it is refreshing to see someone an engine that is deliberately, not beautiful.

In the initial press three projected displacements announced. All three would the same 77mm …, different bores. The smallest be 1814cc via a 100mm bore and knock out 160hp, the next be 1925cc via 103mm and would 200hp, and the big boy of the range would 2097cc with a 107.5mm and make a stout 250hp.

Impressive stuff, especially they claim the engine be Euro 3 emissions compliant and the bike weighs 350lbs Even the “small” 1800 would have a near 1:1 kilogram power-to-weight ratio. The low was due to a relatively light engine odd pounds on its own – featherweight for something 1800 plus ccs) into a light chassis simple bodywork and a slathering of tech materials to keep the to a minimum.

The project began in and surfaced online in 2010 as of a completed engine on a test with an accompanying press and spec sheet from that detailed his philosophy and the data of his new motor, which he the 32 Rovescio (3 cylinder, 2 litre, The public was impressed, but sceptical. Few the aircraft industry were familiar with inverted and doubted it could even

Other skeptics claimed it run, but it would burn oil at a rate and offered no advantages a conventional engine. Most the projected power and weight which seemed optimistic if not for an air-cooled single-cam engine. The common response was “Why?”.

faded when photos of a prototype were shown a few later. The bike looked with bare carbon-fibre and the positively massive engine the design. Up front was a conventional with 50mm upside forks and, oddly, a Brembo brake. Rear featured a springless air shock to the Vyrus and Bimota Tesi 2D) to a carbon-fibre box-section swingarm.

The was composed of two steel trellis bolted to either end of the crankcases – the mass of the frame is effectively the with minimal subframes for the and steering head. The prototype was appropriately, in front of an air-cooled radial engine.

However it appeared that the wasn’t yet ready for prime The prototype was shown without a exhaust, and had no drive chain. No equipment was present, and it had a half-finished to it. Again the critics doubted it work.

Yes, we have the of a motorcycle bolted around crazy engine, but no one had witnessed it or moving under its own power.

The were finally silenced in 2011 when the Nembo an appearance at the Franciacorta circuit for testing. A bright, Italian red prototype (the second burst into life in the with a throaty racket can only be described as the bastard of a Triumph triple and a Bristol

At low revs it had the signature mechanical of a British triple, while load it sounded like a aircraft blasting across the with a staccato bellow. The rider praised the unusual reporting it had tidy handling, a spread of power, and an utterly sound. Apparently Sabatini’s wasn’t all vapourware – the proof was around the track, attracting onlookers in the pitlane.

Nembo Motociclette Super 32

The Nembo was to tune the fuel injection and in the engine, with additional at the Adria circuit in the fall of

The engine dominates the design, massive in relation the other The swingarm is quite long to the rest of the machine, and pivots in the engine cases by necessity – the sprocket sits at knee due to the placement of the gearbox on top of the engine. The looks like a strange that appears incongruous but – it looks like someone a GSXR-1100 engine into a chassis.

The hidden frame and bodywork contributes to this appearance, as does the tiny and seat perched high the rear wheel. Some comparisons to café-racers, but I’d be more to describe it as a brutish hand-built

Despite making its maiden on the track, the Nembo is not intended to be a machine. It was designed to be a high street bruiser that was to be to order in street-legal trim – or at that was the plan in 2011. then news from the has been nonexistent and their inactive. The last public was the showing of the red track prototype at the Concourso d’Eleganza di Villa in Cernobbio, Italy.

Retail pricing was never publicly but was anticipated to be exorbitant on the hand-built nature of the design.

Not with this lack of I contacted Nembo directly. Daniele Sabatini was kind to answer my questions and provide an press release that the current state of the project. He was kind enough to provide photos of the Nembo being tested at the Adria circuit.

posted a copy of the press on the OddBike Facebook page and at the of this page.

Nembo is and well. Two 1814cc prototypes been built, nicknamed (the black carbon-fibre and Pollux (the red example) the Dioscuri twins of Greek Prototype 002, Pollux, is for sale at an undisclosed price – parties are asked to contact directly.

Once Pollux is limited production of the Super 32 begin on a made-to-order basis. The version will feature the engine and “MotoGP” levels of Claimed power remains with 145 lb/ft of torque. notes that the two existing are well developed but that revisions have been to the engine design over the and that the forthcoming production will be much improved.

are also plans to develop a version to campaign at the Isle of Man TT.

The release describes the Nembo as most expensive road in the world” and Sabatini confirms the production version is set to cost in the region of 300,000 Euros a Exorbitant, certainly.

But keep in that you are not paying for a machine uses an existing engine – the motor is 100% unique and the price is needed to offset the cost of designing and building an in-house without the backing of a manufacturer (or the amortization of development by selling thousands of units). You are a hand-built concept machine, not a amalgam of off-the-shelf pieces. As the release notes:

While the others are rather Nembo Motociclette can rightfully the title of true ‘builder

The Nembo is a weird offshoot on the evolutionary tree. It’s to be a breakthrough that will mainstream design, nor will clamor to build inverted now that the trail has been The benefits of such a design are by the added complexity of designing a from scratch.

But if the Nembo had the same engine design in a arrangement we likely wouldn’t be it today, and the Super 32 would remained an obscure project in a shed somewhere in Rome. it captured the imagination of a curious and raised the ire of many critics. The press release notes their online publicity was viral and through the coverage of blogs and forums.

The Nembo the sort of technological experiment is a refreshing diversion, an exercise in engineering creativity driven by and the desire to do things differently. innovation in motorcycle design is a quality, but Sabatini has created a that truly stands from convention. The result is one of the unique and exclusive motorcycles in the with an iconoclastic design flips traditional design on its

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Nembo Motociclette Super 32
Nembo Motociclette Super 32
Nembo Motociclette Super 32
Nembo Motociclette Super 32
Nembo Motociclette Super 32
Nembo Motociclette Super 32
Nembo Motociclette Super 32


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