What is out Rod/Stroke ratio?

[Oyvind Ryeng]

I can imagine something along the lines of 1,55 or maybe even 1,60?

And the rod length, as in rod/stroke ratio, is that from the rods wristpin centre to the centre of the rod bearing? Not the entire external length?

[AZmike]

The ratio is found using center to center measurements.

[Vinny]

Some good theory and such on the subject HERE (http://www.auto-ware.com/ubbthreads/showflat.php?Cat=&Number=165&page=0&view=collapsed&sb=5&o=&fpart=1)

[Oyvind Ryeng]

That was an interresting read, they bring up a few good points there.