Bikesrepublic

Berita Terkini

G.P.R. Exhaust System on Yamaha T-Max

Maxiscooter
Also deliverable with homologation, the most diffuse maxiscooter 4 times silencers complete the range of production G.P.R. aggressive lines, performances and lightness are the main characteristics available only in the oval version with finish in Titanium, poppy, carbon and stainless steel.  (more…)

Mono-stroke engine or Bourke engine

2-stroke engine gives out one-power stroke for every revolution, while 4-stroke engine gives out one-power stroke for every two revolution. 2-stroke engine is about 40% more powerful than the 4-stroke engine. Then, what if there is 1-stroke engine available? Does it means mono-stroke engine is 40% more powerful than the 2-stroke engine?

This article about mono-stroke engine or Bourke engine has been available for a long time in my bookmark but had been forgotten for a while until today. The engine is actually already available since 1920s, but I don’t know why there isn’t any company taking this design for further study.

The benefit of this Bourke engine are great. It got two power stroke per revolution. It happens to be an improved 2-stroke engine, with the advantage of no premixing the 2T oil into the combustion chamber. It is also high in efficiency as it produces only 80ppm of HC (hydrocarbon) and zero CO (carbon monoxide)!

For the experiment that has been done to a 400 cu. in (6.8liter) Bourke engine, it produces 200hp at 2000RPM with 500lb/ft (677.14Nm) of torque!

For comparison, Ferrari Enzo with 6.0 liter engine produces 660 PS (485 kW; 651 hp) at 7800 rpm and 657 N·m (485 lb·ft) at 5500 RPM.

As I read the article, it is said that Bourke engine are believed to be the “Most Efficient Form of Internal Combustion Engine”.

One more pictures, animation of the Bourke engine and original links after the jump  (more…)

2011 Yamaha Ego S Black
2011 Yamaha Ego S White
2011 Yamaha Ego S Red

 

Higher resolution (800px) pictures and original link after the jump  (more…)

A very smart and strong looks has been achieved by Massive Dynamic modders from Thailand for this Kawasaki Ninja 250R. The red colour that is choosen give the bike extraordinary looks and stance. You can get this parts for your bike too.

19 more pictures, contact number for Massive Dynamic and original links after the jump  (more…)

Yamaha YZF-R1 with G.P.R Exhaust System

With G.P.R. you get it all – the quality, the look, and the performance of the best and most expensive racing pipes available. From concept to final welding and packaging each G.P.R. exhaust is the product of over 40 years of experience at the state-of-the-art manufacturing facility in Milan, Italy(more…)

2011 Honda Icon SE

Boon Siew Honda has just updated the Honda Icon with new addition to the family by including the Special Edition version. On the decals, it is printed ‘Racing Spirit’. Does this means any upgrade on the performance too?

2 more pictures and original link after the jump  (more…)

Arkib

Ikuti Kami di Facebook

Ikuti Kami di YouTube