Suter two-stroke racing machine MMX 500

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Suter two-stroke racing machine MMX 500
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Suter two-stroke racing machine MMX 500

Suter two-stroke racing machine MMX 500

Suter two-stroke racing machine MMX 500

Suter two-stroke racing machine MMX 500

14th photos

Suter two-stroke racing machine MMX 500
Marco Zamponi

1/14
Picture gallery, sport: The Suter MMX 500 is to show on the Isle of Man that the two-stroke engines still have a future.

Suter two-stroke racing machine MMX 500

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Mat Oxley in the 1990s with the Yamaha TZR 250 at the TT.

Suter two-stroke racing machine MMX 500

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Max Oxley, TT winner and PS sports editor also dreams of a future for the two-stroke engine.

Suter two-stroke racing machine MMX 500

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Mat Oxley in the 1990s with the Yamaha TZR 250 at the TT.

Suter two-stroke racing machine MMX 500
Davision

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Ian Lougher’s last two-stroke race on the Isle of Man was 17 years ago. In 2016 he started with the Suter MMX 500 in the Senior TT and finished 34th.

Suter two-stroke racing machine MMX 500
Dave Roth

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For a possible road approval of such a motorcycle, however, direct injection is planned for future production steps. Eskil Suter is sure to achieve the emission values ​​of Euro 4 and also to significantly reduce fuel consumption.

Suter two-stroke racing machine MMX 500
Friedemann Kirn

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A fascinating V4 engine: you can clearly see the intake manifold injection above the blue intake funnel.

Suter two-stroke racing machine MMX 500
Friedemann Kirn

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The intake manifold injection used by Suter also facilitates maintenance and engine tuning. While the old two-stroke engines were much more temperature-sensitive due to their technology with the carburettors and the machines had to be jetted accordingly, the gasoline-air mixture is now permanently optimized via the injection system using a sensor.

Suter two-stroke racing machine MMX 500
Friedemann Kirn

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Two counter-rotating crankshafts to balance the inertia forces.

Suter two-stroke racing machine MMX 500
Friedemann Kirn

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Another world: apart from the spark plug and the sensor, the cylinder heads of the two-stroke four-cylinder engine do not contain any components worth mentioning.

Suter two-stroke racing machine MMX 500
Friedemann Kirn

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… And that with a weight of only 127 kg.

Suter two-stroke racing machine MMX 500
Friedemann Kirn

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The 576 cm³ four-cylinder two-stroke V engine delivers around 195 hp at 13,000 rpm. …

Suter two-stroke racing machine MMX 500
Friedemann Kirn

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The idea was born six months ago: Suter’s new MMX 500 will compete in the TT this year, in the king’s race, the senior TT, and Ian Lougher will be in the saddle.

Suter two-stroke racing machine MMX 500

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In 20 years we will be with the electric motor anyway, then everyone will say: Oh, how awesome the combustion engines were. But that’s the future. Is that it??

Suter two-stroke racing machine MMX 500

Original Swiss work

From today’s point of view, half-liter two-stroke racing machines are archetypal creatures of motorcycle Grand Prix sport – and they have rightly ended up in museums. But now the Swiss Eskil Suter has breathed new life into the extinct species – with the latest technology.

GEight not – it doesn’t exist, says Eskil Suter. Because he is not afraid of any challenge, the jovial Swiss rose from a private Grand Prix driver to the owner of a high-tech company. First the young company “Suter Racing Technology” produced clutches and tuning parts, then the Petronas FP1 three-cylinder engines for the Superbike World Championship and chassis for well-known MotoGP teams. Marc Márquez drove to the Moto2 world title in 2012 on a Suter MMX2, the next coup was the Moto3 prototype development for Mahindra.

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Suter two-stroke racing machine MMX 500

Suter two-stroke racing machine MMX 500
Original Swiss work

195 hp at 127 kilograms

“The beast is back”, he advertises for the new Suter MMX 500, a poisonous, wildly screaming and in every respect out of date bundle of energy, which makes 195 hp at 127 kg just as fascinating as the sheer unreasonableness of the whole idea. The MMX 500 is not about TÜV badges, but about the memory of the Wild West heroes of GP sport such as Kenny Roberts, Randy Mamola or Kevin Schwantz, of the rodeo ride on motorcycles that behaved like wild bulls, of adrenaline rushes unlike any other formula.

The Suter MMX 500 brings these times back and does a lot better than some of the originals of yore. Instead of one crankshaft, two counter-rotating crankshafts rotate in the Suter V4 to perfectly balance the inertia forces. With a displacement of 576 cm3, Suter missed the target a bit because he wanted to start from the piston diameter of 56 mm common on the market. “The hub is then a logical consequence. If the stroke is too large, you will stop at the piston speed, if the stroke is too small, torque is lost due to flushing losses. ”With a 58.5 mm stroke, Suter was able to“ fill the torque hole of the old 500 ”and proudly points out that Freddie Spencer is with the first presentation of the machine was able to conjure up a long wheelie and control the machine with a fine hand throttle.

The two-stroke engine is again acceptable

The intake manifold injection, which constantly rebalances the gasoline-air mixture, is also customer-friendly. “If the temperature rises, you’d have to change the nozzles on carburetors. This happens automatically with the electronics. The sensors notice when the engine is running too lean or knocking, and the system reacts, ”says Suter.

The injection nozzles are currently located in the intake tract, with one nozzle in front of and one behind the throttle valve, but Suter is thinking of environmentally friendly direct injection for the next evolutionary stage. “It only comes into action when the outlet channels are closed, without flushing losses. With the Suter MMX 500, we achieve emission values ​​according to the Euro 4 standard and reduce gasoline consumption by 20 to 30 percent. The two-stroke will then be socially acceptable again. And roadworthy, ”says Suter’s vision for the future.

A Suter MMX 500 is bought by enthusiasts who can afford something extravagant and who can fulfill their dream of the ultimate kick. “The power to weight ratio is extreme and the handling is indescribable. A Moto2 machine is a tractor on the other hand, ”enthuses Suter. Soon he wants to offer events where customers can work on lap times together with the Suter crew.

Races at the Senior TT


Davision

Ian Lougher’s last two-stroke race on the Isle of Man was 17 years ago. But in 2016 he started again – with the Suter MMX 500 in the Senior TT and finished 34th.

Serious races are also on the program. Suter Racing started as a works team in the Senior TT and in the Superbike class on the Isle of Man at the beginning of June. The figurehead is the ten-time TT winner Ian Lougher, who has been signed for three years. In 2016 he finished 34th in the Senior TT with Suter Racing.

A second bold plan is currently on hold. Wayne Gardner wanted to round up the heroes of yore for a senior championship with identical MMX 500 machines that are to be painted in the old original colors for the show. The first test of strength of the “World GP Bike Legends” was already on the program for the “ADAC Sachsenring Classic” in June. But as nice as the idea of ​​the 1987 world champion was: There was simply no money for a field of up to 20 such bikes. A Suter MMX 500 costs around 110,000 euros (excluding VAT), the first 20 have already been sold.

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