It is not impossible to change squish area while keeping CR the same.
Far from it. Just make the chamber deeper.
How many people do you know doing serious investigation into squish?
It's been one of my 2 stroke and 4 stroke power secrets since reading Jennings book in the 70s.
Comparisons. Change one thing while keeping others constant to see the effect.
This is how we learn. I'm no scientist, but I do get paid to do this sort of stuff in industry.
Results. Find what works and go with it. Chase the real results that you find and demonstrate.
Listen and read the other's work but question it. Test it. Peer review.
Note the 3 KTM heads below, all are the same cc displacement but slightly different chambers to test effect.
These two heads are the same cc displacement, just looking at chamber shape:
These below are both the same displacement (within 0.5cc), although smaller displacement than the ones above to investigate the effect of increased compression ratio.
I did earlier experiments with squish area that push me to 50% area being an important dimension.
Compression the same, more squish has a huge effect on power, not always good, but a huge effect.
It also affects timing.
Hey Jaguar, conflicting ideas and theories are a very good thing. They push the envelope of learning.
Just don't shake a 44 year old graph at me and wish me to accept it as holy gospel. Test it yourself.
These engines are so easy to work on, they are the perfect experiment media for these ideas.
That is what I am doing here, and I enjoy reading your work, your sources and your ideas.
If I disagree, I'll tell you why, where it comes from.
And best of all, we can test these things on these engines quickly and cheaply.
Steve