Kawasaki Triple Racing in the U.K.

Some of the coolest Kawasaki Triples are raced in the United Kingdom. There are Kawasaki H2 and H1 Triple dragbikes and really sharp street/dragbike triples. Visit www.kawasakitriplesuk.com for more information about racing in the U.K.

Category:

Autos & Vehicles

Tags:

• Kawasaki Triple
• Kawasaki
• H2
• triple
• dragbike
• motorcycle
• H1
• S2
• S3

[Zyworski]

I wonder why 2 strokes don't run the exhaust into a single pipe? I like 2 strokes, but when you get more than 2 cylinders the exhaust system turns into a convoluted mess.

[kawtriples]

@Zyworski Check out my video Suzuki GT750 dragbike for a 3 into 1 exhaust on a 2 stroke.

[Zyworski]

@kawtriples I did, and I can't deny what I see, but I was hoping for a more technical answer.

[kawtriples]

@Zyworski The separate pipes give better top end performance than a 3 into 1 as in more hp at higher rpm's. The 3 into 1 will fall off at higher rpms. Search 2 stroke exhaust for a more thorough explanation.

[Zyworski]

@kawtriples Use the Internet, I should have thought of that. Although I had difficulty fully understanding everything I at least picked up the basics, head pipe length, stinger diameter and length, divergent cone, convergent cone, and the belly pipe section. Not everything made sense when compared to your drag bike with no belly pipe and a wide diameter stinger, but I intend to devote more thought to the topic and it already has me thinking variable geometry. Thanks for the tip.

[kawtriples]

@Zyworski There is a 'belly pipe' on my dragbike system. It is under the bike and is actually some kind of a modified Harley pipe. Harley Davidson is stamped on it. The exhaust on my dragbike is a one of a kind, custom built by the guy who built the bike. No idea how well it works yet. I hope to find out this year.

[MrSlugbait]

I think youtube should have a separate site for slideshows, a frame rate of zero per second is not a video

[Zyworski]

@bigvalve01 Balanced combustion only makes sense, but check out the exhaust of the NSR 500 mentioned elsewhere in this comment chain, they may be trying to have the best of both worlds with 1 bank of cylinders dedicated to top end and the other dedicated to bottom end. Look at the images of an NSR 500 image and see what you think.

[bigvalve01]

@Zyworski 2T,s need the same size expansion chamber for each cylinder to produce the most power.

[scottwadeg]

@Zyworski yeah man, and 180 hp. that's huge. not too many 1000 cc bikes pushing out double that...360 hp... fastest 1000's are around 200 hp. saw some claims on the net that a twin turbo hayabusa can get 500 hp

[Zyworski]

@scottwadeg I just checked out that NSR 500 and it was exotic to say the least. I V4 2 stroke is like a V8 4 cycle. I think that engine represents some out of the box thinking that I like.

[scottwadeg]

@Zyworski dude, the exhaust system is what supercharges the engine through sonic waves. the exact design of the exhaust is crucial to max out the powerband at a certain rpm. just got a ptk exhaust for my 150cc and its add many horses. check out the nsr 500 with 4 cyclinders. pumps out 180 horses.

[1100HondaCB]

@Zyworski The AR125 in standard form put out 21HP and the KH110 put out 15.5HP. Quite remarkable considering it was just over thirty years ago. I have a KH125 which I bought nearly two years ago and was keen to get one as I had one for my first bike when I was 17 back in 1997. I regretted getting rid of it and had so many fond memories of it, I just had to get another and although it took a lot of patience, I succeeded.

[Zyworski]

@1100HondaCB I remember the little 100cc Kawasaki, Centurion that put out 20HP, then I got to thinking what would happen if they turbo supercharged it. Unfortunately I woke up before I got to see the results. LOL

[1100HondaCB]

@Zyworski You're right in what you've said. The idea of using sound waves to pulse tune two-strokes has been around since the 1920s. The idea was to cut the exhaust pipe to give the desired powerband as needed, but a narrow one. In 1950, Walter Kaaden improved the idea with expansion chambers on his MZs, and in some cases producing 200HP/Liter. The likes of Kawasaki and Suzuki adopted the design, but little do people know, the technology was already nearly 20 years old!

[Zyworski]

@1100HondaCB The concept of a tuned header doesn't escape me. By making all the primary tubes on a header of equal length none of the exhaust pulses will pile up on one another. As I understand the 3 cyl 2 strokes have 2 of the pistons fire at the same time so having both with the same length head pipes that converge into a single would cause congestion. Since the length of the head pipes must be of different lengths it stands to reason that it can only be tuned for specific RPM's