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.
@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.
@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.
@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.
@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
@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!
@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
@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 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.
@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.
@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
@kawtriples If you would contact me, I have one each kawasaki H1 and H2 stories. Nothing special, but you may get a kick out of them. If you contact me, be sure to mention that I have some triple stories. Even one Suzuki 380 story. Todays squids think the 4's are cool. Yes, they are, BUT, 15 to 25 years before the "Superbikes" were the 3 holers. It took a special breed to wick the throttle on a bike that could shake you off like water off a wet dog H1). internationationaldave@gmail.com
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.
Zyworski 1 month ago
@Zyworski Check out my video Suzuki GT750 dragbike for a 3 into 1 exhaust on a 2 stroke.
kawtriples 1 month ago
@kawtriples I did, and I can't deny what I see, but I was hoping for a more technical answer.
Zyworski 1 month ago
@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.
kawtriples 1 month ago
@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.
Zyworski 1 month ago
@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.
kawtriples 1 month ago
for the simple reason its a two stroke
zxrrsteve1 1 month ago
@Zyworski Two-strokes respond well to pulse tuning. Having separate chambers allows this theory to be exploited.
1100HondaCB 3 weeks ago
@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
Zyworski 2 weeks ago
@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!
1100HondaCB 2 weeks ago
@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
Zyworski 2 weeks ago
@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.
1100HondaCB 2 weeks ago
@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.
scottwadeg 2 weeks ago
@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.
Zyworski 2 weeks ago
@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
scottwadeg 1 week ago
la musique des moteurs , elle est ou ?
salemdu30 1 month ago
Spotted RB all the way from Ottawa Canada... great video.
rookiewidowmaker 2 months ago
Nice bikes and nice song. I had many rd350s. What band is that?
pedroaraujodesign1 2 months ago
Some people r just addicted to the smell of 2 stroke . The other type of ' speed ' !!
harmageden 3 months ago
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@kawtriples If you would contact me, I have one each kawasaki H1 and H2 stories. Nothing special, but you may get a kick out of them. If you contact me, be sure to mention that I have some triple stories. Even one Suzuki 380 story. Todays squids think the 4's are cool. Yes, they are, BUT, 15 to 25 years before the "Superbikes" were the 3 holers. It took a special breed to wick the throttle on a bike that could shake you off like water off a wet dog H1). internationationaldave@gmail.com
forku2umf 5 months ago
man i miss the 2 stroke street bikes wish i could find one
macdaddy1600 5 months ago
I am a 70s Suzuki triple guy...yet...and yet...your bikes as very sweet :-)
Great sounds too
GT380man 1 year ago