SwissAuto 250 4 Stroke - The 'Rotax Max' of 4 Stroke Karting?

The SwissAuto SA250 is a 34HP 250cc DOHC 4 stroke TAG motor recently introduced to the Karting market.The Swiss produced motor is now available through a number of International dealers such as Saxon Motorsports in the UK.

With the promise of high horsepower, low maintenance and simpler operation the new 250 four strokes have been a very promising development in the TAG world, except for one thing - their high price. Most TAG 4 stroke motors retail for about USD 4500.00 or about the price of an ICC.

The SwissAuto now promises to change that. Saxon Motorsports lists the SA250 for £ 1,795 or USD $2661 which is less than a Rotax Max at £ 1,872.00.

So with a cleaner, greener, more powerful, lower maintenance package available for the same or less than a 2-stroke TAG, this may well be the time for 4 stroke racers (Honda, F200, Briggs etc) looking to step up in power to think about a 4 stroke TAG alternative. So too may those that just want to focus on racing and less on servicing and maintaining their ride.

/FFJ

'Clean Two-Stroke Engines - Boyesen Reinvents the Two-Stroke'

Snowmobiles and other small recreational vehicles have traditionally been mostly powered by two-stroke motors. But recently, environmental concerns have pushed manufacturers to develop four stroke alternatives.

Now Eyvind Boyesen has come up with a simple mechanical solution that could breath new life into the 2 strokes.

The Boyesen design basically traps the fuel/air charge in the cylinder without the need for a sound wave to push it back in. It makes use of an exhaust valve linked to the crankshaft to time the opening and closing of the exhaust valve..

For details see link below:
http://www.maxsled.com/absolutenm/templates/articles_layout.aspx?articleid=1059&zoneid=17

Could this technology succeed in solving the two-stroke dilemma?

/FFj