Thread: 2 stroke ain't dead yet....

Originally Posted by clean32

ITS smoke on the water, you must have had a hair cut or gone bald

Great song, Deep Purple from the album Machine Head.

But we are talking about smoke in the water.

Dave.

Originally Posted by Mr Whippy

Great song, Deep Purple from the album Machine Head.

But we are talking about smoke in the water.

Dave.

ohhh OK BONG

Originally Posted by Mr Whippy

What harm is done by putting smoke into the water?

Dave.

The Blue smoke is UNBURNT OIL!!!!!!!!!!!!!!!!!!
Have you never seen the end of a 2 stroke bike exhaust, lots of oil in there.

Smoke is the result of burning. If something is not burnt it won't smoke.

This is why we get the smoke, because the oil is burnt. The exhaust on my out board does not have oil residue in it and neither does my chainsaw.

My outboard is old and I'm sure modern ones put out a lot less smoke than mine and with modern technology could easily solve any pollution problems.

I am sure outboards will still be around long after I have departed this planet.

Dave.

you think so????????????

Two and Four Stroke Outboard Engines

http://www.kimointernational.org/Por...s/RESL102D.pdf


That took ten seconds to find............. 2 strokes pollute the water......... Don't get me wrong there is nothing better than a 2 smoke at full noise but.

So what this is saying is that smoke is unburnt oil. So if the oil is burnt there will be no smoke.

Does this then mean at the camp fire if I burn all the wood I will have a smoke free fire.

Dave.

Originally Posted by Mr Whippy

Smoke is the result of burning. If something is not burnt it won't smoke.

This is why we get the smoke, because the oil is burnt. The exhaust on my out board does not have oil residue in it and neither does my chainsaw.

My outboard is old and I'm sure modern ones put out a lot less smoke than mine and with modern technology could easily solve any pollution problems.

I am sure outboards will still be around long after I have departed this planet.

Dave.

Smoke = " A suspension of fine solid or liquid particles in a gaseous medium ".
could be due to burnt or unburnt oil. i suggest you clean a 2 stroke motor in a drum of water one day and then take a look at the scum on the surface of the water after it settles to get an idea of the amount of scum they pump into the water. The big problem with most 2 strokes is each time a new charge of air/fuel is loaded into the combustion chamber, part of it leaks out through the exhaust port. That's why you see a sheen of oil around any two-stroke boat motor. The leaking hydrocarbons from the fresh fuel combined with the leaking oil is a real mess for the environment.
this appears to being addressed in this new engine.

Originally Posted by twitchy

you think so????????????

Two and Four Stroke Outboard Engines

http://www.kimointernational.org/Por...s/RESL102D.pdf


That took ten seconds to find............. 2 strokes pollute the water......... Don't get me wrong there is nothing better than a 2 smoke at full noise but.

The first article makes no reference to direct injection 2 strokes so I would imagine it's old or just useless.

I'm not sure how much you've been following the outboard market of late, but if all 2 strokes are to be banned then you better tell all the major manufacturers about it because their primary development and marketing focus is on direct injection 2 strokes.

These motors use almost no oil, and less fuel than 4 strokes. As ever they are still lighter and cheaper than 4 strokes.

You should look into them... they really use virtually no oil, and definitely less than a 4 stroke does if you include their oil change. As I said earlier, the e-tec range (and probably others) can operate indefinitely at reduced power settings with no oil.