Suzuki 2-strokers seeking new home

The owner of 20-odd Suzuki two strokes from 80cc to 500cc is seeking a new home for the collection so the public can also enjoy them. Neil Batterham, 58, of Highfields, is hoping a cafe or shop owner in the region with good security can display the bikes. Click here to send Neil an email …

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Czech CZ

My first bike: 1973 Czech CZ 175

Who remembers the zzzing of an old two-stroke Czech CZ trail bike? For the holidays we are launching a series of  articles about our readers’ first bike. Just click here to send photos and details. We start with this article about an old Czech CZ trail bike from London reader Martin Welsh, 55, who says he hasn’t …

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Camcon digital intelligent valve actuation engine

No-compromise electronic desmo valve engine

Imagine taking the Ducati desmodromic valve system and adding electronic control that provides brief bursts of two-stroke power! The result could be a motorcycle engine that delivers great low-down torque as well as high-end power, without compromise. British company Camcon Automotive has produced just such an engine. They claim their electronic Intelligent Valve Actuation (IVA) system …

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2 stroke CITS engine events fail flywheel

Aussie 2-stroke invention may fail

A brilliant Australian-designed two-stroke engine that meets tough emissions requirements and eliminates total-loss lubrication may fail for a lack of investment. The Crankcase Independent Two-Stroke (CITS) was invented by former South African motorsport engineer Basil van Rooyen, Director of CITS Engineering, St Ives, who says it would be ideal for motorcycles. Tough pollution laws have …

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Dutch wooden bike runs on algae oil combustion

Internal combustion engines not dead yet

Despite the coming era of electric motorcycles, there is still plenty of life left in the internal combustion engine. KTM has just released two enduro bikes with direct-injection two-stroke engines, two Dutch designers have built a wooden bike (pictured top) that runs on algae oil and a South American has invented a bike that runs …

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2 stroke CITS engine events fail flywheel

Aussie two-stroke engine invention

A Sydney engineering company has developed a new two-stroke engine that they believe could be used in motorcycles. It’s called Crankcase Independent Two-Stroke (CITS) and was invented by former South African motorsport engineer Basil van Rooyen, Director of CITS Engineering, St Ives. He says advantages over four-stroke are that the CITS engine is more powerful, …

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Suter MMX 500 two-stroke fail

Two-stroke engines making comeback

Two-stroke engines were phased out by tough pollution laws and fuel economy targets, but they could be making a comeback with KTM, Honda and boutique builders. KTM and Honda have both registered patents for direct-injection two-stroke engines. In 2015, Honda filed a patent for a new two-stroke motor using direct fuel injection for a cleaner burn and …

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Suter MMX 500 two-stroke fail

Two-stroke race bikes for super-rich

It seems there is a lucrative market in making limited-edition GP race bikes for super-rich clients, with two European companies making two-stroke racers. While Honda has produced the quarter-million-dollar, road-legal, four-stroke RC213V-S MotoGP replica, German company Ronax and Switzerland ‘s Suter Racing have gone down the retro two-stroke road. The Ronax 500 is powered by …

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Toyota Prius hybrid and 2-stroke and hybrid motorcycle patents

Two-stroke and hybrid engines planned

Tougher emissions laws are forcing motorcycle companies to rethink the future of the bike with Honda considering a return to two-stroke and Suzuki looking at hybrids like the Toyota Prius. Honda has resurrected hopes of a return to lightweight two-stroke bikes by filing a patent for a new two stroke motor using direct fuel injection …

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Ronax 500 two-stroke superbike

Two-stroke road-legal superbike

  Just when you thought two-stroke was dead, German company Ronax has produced a 500cc two-stroke machine that is road legal but wouldn’t be out-gunned on the MotoGP grid. SEE ALL THE PHOTOS HERE The Ronax 500 is powered by a fuel-injected 500cc two-stroke V4 with 119kW at 11,500rpm. Yet it weighs only 145kg (dry) …

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