In message , Chris Bacon
writes
Sylvain VAN DER WALDE wrote:
"Chris Bacon" wrote...
Sylvain VAN DER WALDE wrote:
"Chris Bacon" wrote...
Dave Plowman wrote:
The stroke of the piston and the size of the combustion chamber
determine the compression ratio.
[CPB disagreed]
Chris.
You're making a fool of yourself. Just listen to Dave Plowman (and
others).

Above is what DP says determines the CR. Do you *really* agree, or
can you add something to that statement to make it right?

Hmm! Let's try.
As the piston rises to T.D.C. (top dead centre), that fuel/air
mixture
will be compressed to an extent determined by the stroke/bore ratio of
that particular engine and the capacity of the combustion chamber.

You're sort of getting there, in that you've added the bore

I rather think that was your contribution


--
geoff