Two-Strokes: The Complete Overview

Project Scientist: Semester Two

This video uses real-world images and video, as well as 2D and 3D animation to demonstrate how a two-stroke motorcycle engine works. Starting from the work of the piston and two-stroke cycle, through the primary chain (Maico feature) to the wet-clutch, then the transmission. Each stage is explained in fair detail given the constraints of a ten-minute video.

Technical limitations meant that not all information could be covered with the resources I have, so some clips were used from the videos of Toby Opferman, YouTube username Tobyeo (I highly recommend his videos for detailed information!)

Any questions, comments, concerns, corrections, etc can be left in the comments section below, or in PM form. Any corrections noted will be immediately put into annotation for the greater good of the populous.

Category:

Autos & Vehicles

Tags:

• Stroke
• Husqvarna
• Physics
• 250
• CR
• Two
• Ride
• Piston
• Primary
• Clutch
• Transmission
• Manual
• Dirtbike
• Motorcycle
• Husky
• Chain
• Engine
• Motor
• Autodesk
• Inventor
• 3D
• 2D
• JETZcorp

[bansheeboy400]

nice helmet man i love it how much it cost??? A LIFE?!!!

[JETZcorp]

@bansheeboy400 As I've explained before, my helmet was 15mi away at my dad's house, and it didn't make any sense to waste an hour going to get it, just for a 15-second ride on pavement at 30mph. Seriously, if you need a helmet to do a ride like I showed in this video, THEN YOU NEED A HELMET IN YOUR CAR ON THE FREEWAY.

[bansheeboy400]

@JETZcorp no cars have safety standards bikes and quads you gotta bail or some shit cause who holds on to a flipping bike not me and im just kidding i got a banshee and i blast around goin 96 all day with out a helmet. helmets are for when u got other riders cuz only other riders crash i cant crash

[JETZcorp]

@bansheeboy400 Cars do have safety standards, but regardless of what you're in, hitting something at 70mph in a car is going to be a total disaster; very likely much worse than if I'd rammed my Husky into someone's truck at 30mph without my helmet. When I'm doing any sort of serious riding, for more than five minutes, I always wear my helmet. That's where I get the helmet-camera footage for my JETZcorpMotors channel.

[bansheeboy400]

@JETZcorpa alright alright im just saying couple hour drive for the rest of your life or death you know im not hating just you never know ya know? what if there was another guy makin a vid for youtube and hes high on meth or some shit

[JETZcorp]

@bansheeboy400 Well, you'll notice that it was in fact a closed course. Fortunately on a dead-end street, keeping people from driving down it for two minutes is extremely simple. In fact, no one had to be turned away, but we had a guy keeping it clear regardless. All I had to do to avoid death was not hit a parked car, and after riding for ten years (at that time, anyway), I was pretty confident I could avoid that.

[EngineeringExplained]

Nice video, like your enthusiasm haha

[JETZcorp]

@Yoshij250GS Nice Maico! My dad's got an '81 250 and a 490, and the 250 was able to keep up with my uncle's 430 Husky the last time he took it out. The 490 has literally been ridden only three times (still has stock tires with perfect tread) so it's his one and only museum piece. These days he's been riding his '77 Maico 250, which is just about the best-handing like you'll ever find (better than the '81, he says, because it's so low and planted in the front). Check my JETZcorpMotors channel.

[Yoshij250GS]

@JETZcorp very nice video, well done commentation and supernice animations first of all :) i have a 81 maico 250 (kicker on the left) and getting off the bike to start it up again after stalling is just unnecessary and costs a lot of time. its just 250cc, no need for using your dominant leg. you just have to get used to it, takes 1 day of riding and youll be fine. not only 80s bikes have left side kickstarters, all KTM LC4 engined bikes have the kicker on the left up to 4 stroke 654 cc.

[JETZcorp]

@TheKawi125rider If the Husky had the grip (it would have, on that pavement) it would have brought the front end up too. It's got ridiculous porting, a very lightweight crank, and no flywheel at all, which all add up to a bike that goes from zero to "Woah there Silver!" in about a quarter-second. It's a very different kind of power delivery to the previous Huskies, which had a reputation for strong low-end and mid-range power.