The Rise and Fall of 2 Stroke Street Motorcycles

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[sidneyaarons]

I had a few 2 strokes when I was a kid. Loved them, particularly the noise they make. Can't do electric vehicles as the mechanical noise is a huge part of the experience.

[bjarneberg]

Hi! Just got my 🏍️. License today!! 🍾🎉

[ericbell]

Nothing like the smell of two stroke in the morning. Still have my second bike from high school. Early 70's. Kawasaki H1 500. Expansion chambers, velocity stacks, jetted. Great times on that bike.

[marktiller]

I'm in my 60's and had 2 stroke road bikes, they were amazing, still my favourite bikes.

[RedBud]

I love the smell of two-stroke in the morning. It smells like victory.

[Nunodeo]

Never going to give up my RZ350, especially with a California plate. 🏍

[ADingoTookMyDasco]

2 Stroke nostalgia. love it. My second bike ever was a Suzuki RG250 half fairing after learning the basics on a clapped out CB250. I'll never forget the first time I hit the power band & did an unintentional wheelie almost the entire length of my street while trying to hang on for dear life. Good times!
We were lucky enough in Australia to get all of the 2 stroke smorgasbord that Japan had to offer, but with a 250cc cap & power to weight limits, the RG250 was the fastest bike you could ride on your learner & provisional license, so there were plenty of us out there testing our limits on these beasts. There's a few RGV's ^ NSR's listed for sale now, but nothing beats the kickstart only fun of the RG250 & I'd love to add one to my current collection if I ever come across one again.

[GromminJapan-jc]

Had an MC21 NSR250R here in Japan between 1999 and 2003. Three months after I bought it I was hit by a guy in a minivan who decided last minute that he needed to get gas so he turned from two lanes over without looking and I got knocked down. Bike got fixed, I used the compensation money to buy a JHA full exhaust system, 'racing' air intake, and derestricted CDI. Had a shop adjust the jetting and do fine tuning. Made 78hp at the rear wheel. Fastest but scariest thing I've ever ridden.

[fredandretrondsen]

The Suzuki RGV250 & The Aprillia RS250, :had same V2 engine but Aprillia used another exhaust system and pumped out a but more ho becsuse of that. The RS250, became a legend on the race track!

[chaoticsenpai]

My very first 2 stroke is Yamaha 125z and I really liked it

[markhoskins]

I was riding my 1974 RD350 on a 150 mile weekend trip in 1975 to visit my mother when, 30 miles from my destination, the bike slowed down as if a parachute had been deployed. I knew that it had seized for some reason, but managed to nurse it the rest of the way at low speed. Saturday morning I found that the rolled pin, which controlled the length of the oil pump stroke, had come out, so I was metering oil in amounts intended for idle speed while traveling around 70 mph. I pulled the jugs, took them to a small repair shop to be bored to accommodate the pistons and rings I got at the Yamaha dealership, tapped in a new oil pump pin, installed pistons, jugs and heads, torqued the heads and Sunday afternoon was on my way again. That's the beauty of a two-stroke -- simplicity. (In later models, Yamaha replaced the rolled steel pin which was prone to wiggling out). Your video was enjoyable, but a quick diagram or mpeg of a two stroke engine going through its cycles would have been a helpful addition. I also might mention that, even though the two-stroke has twice as many power stokes per 720 degrees of crank rotation, I believe that this does not automatically mean twice the power per displacement, as efficiency has to be considered. Finally, I would love to have an RZ350, even at my advanced age.

[ob-]

I owned a Kawasaki KR1 and then sold it and bought a KR1-S. It was green and black and I believe it still holds the record for the fastest ever top speed recorded on a 250cc off the shelf street bike - 139mph. My biggest regret is ever selling that bike. I loved it.

[AL-bsry]

My first bike was a Yamaha TDR 125cc 2-stroke. It was a lot of fun.

[lorenzospojavieira]

Got my first bike this week. Yamaha tzr 50cc 2 stroke.:) amazing machines

[tonytesoriero]

I had and would love to have again a 1975 Kawasaki 750 H2c

[Pufferfishmaster]

I have a Aprilia rs 125 2 stroke and it pushes around 40hp believe me or not. What you can’t forget about 2 strokes is that they are capped from factory and you can open the horsepower gates quite easily

[hubertkam]

in europe thers still alot of road legal new two strokes you can still buy

[lrowlands]

I rode for a while a Yamaha TR2 250 air-cooled factory race bike - only on track. Who knows what power it made, but it screamed with a power band between 11500 and 12000 rpm. At 7000 rpm it couldn't pull the skin off a custard. It was a blast to ride, constantly rowing through the gears to keep it on song and brakes no better than dragging your feet along the ground. It ran on Avgas and needed a new set of plugs about every 30 miles (48 klm). Definitely my favourite two stroke. I'm on the lookout for any 80s two stroke to restore and ride for the pure fun of it. Who needs a sports bike when you got a screaming mess between your legs.

[carlosmacedo]

how can you talk about two strokes without naming the Yamaha TZR 250 and the Aprilia RS two of the most iconic 2 stroke bikes...

[battleax]

I’ve been riding for 52 years, I’ve had many 2 strokes, I now have the 400, 500, and 750 Kawasaki Triples. Which I ride regularly. The big difference between my H2 750 triple and my Z900 RS is the fact, there is horsepower and then there is 2 stroke horsepower. Hundreds of moving parts vs. 6 moving parts. 2 Strokes have very little parasitic drag, where 4 strokes are all about parasitic drag. Because you loose part of your intake charge out the exhaust port, 🎉 2 Stokes get less gas mileage compared to a 4 Stroke. But in my opinion the death of the 2 Stroke was the exhaust sound, do you want your motorcycle to sound like a angry chain saw or a Harley. People want their motorcycles to make a low bass drumming sound not a high nasal ring-ding-ding.