Two and Four Stroke Engines

[NordieBoy]

I've just viewed Conley's VIDEO of a T-Bucket and Cobra and they even sound like V8's :cool2:

[PeteThePom]

check google for some truly gargantuan marine diesel two strokes, pistons bigger than your kitchen. As for bikes there used to be a 750 that was known as "the widowmaker" awesome power without matching handling. I think it was a Kawasaki.

They did and it was! Called the KH750, kawasaki also made a 250 and a 400 version all sharing similar characteristics of great power and lousy handling/brakes but the 750 was the killer..............

[Motu]

The first triple,the Mach III was ''the killer'' because of it's radical power band,which kicked in with bad results.The 750 had less of a power band and I don't think it made much more hp than the 500.Mind you,Eric Bone who raced both for many years,and still does,reckons he has never been spat off by a Mach III,but has been several times by the 750 - some may have it spit him off at the esses at Paeroa this year.

[Bonez]

We had a border when I was a kid who had a Mach III. Kept fauling plug if used around town. Twas a dailly morning routine to take out the plugs and put the spare set in clean the ones removed. The guy launched himself into a few shop frontages before getting rid of it IIRC.

[betti]

www.dolmette.com

you want two stroke???

this thing is mental!

[TwoSeven]

Two strokes are pretty inefficient these days - not because of anything mechanical but because they use poor mans petrol that tends to not do wonders for the environment and all that.

The main difference is that a two stroke has twice as many power pulses as a 4 stroke. It gives a different kind of power delivery to the wheel and can mean a smaller engine design. 4-strokes tend to be more tuneable overall and generally more efficient - although delivering half as many power strokes they tend to require more cylinders or higher revs (which is why inline fours are so good).

[F5 Dave]

Thank you for the thorough & eloquent explanation.

Now I see all & understand.