The Natural Philosopher wrote:
On 03/05/2021 17:17, Tim+ wrote:
Chris Green wrote:
"Brian Gaff \(Sofa\)" wrote:
What is the pollution like, I see a lot of power tools that seem to push out
foul smelling blue smoke all the time on strimmers hedge cutters and the
like. Brian

Older. probably, and 2-stroke which necessarily burn some oil and
produce blue smoke. Another reason why I like my 4-stroke Ryobi.


Does such a chainsaw still exist?

all my saws have been 2 stroke
power to weight, mate.

It's not just power to weight ration, lubrication of a 2-stroke is by
the oil in the fuel. It's more difficult with a 4-stroke, you have to
make certain somehow that oil get's distributed around the engine
regardless of its orientation.

Most small 'domestic' petrol strimmers and similar machines are still
2-stroke, more for the lubrication issue than weight I think.

--
Chris Green
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