https://honda-tech.com/zerothread?id=1088178

This thread was about r/s ratio and high rpm's. Lengthy but informative thread.

The H22 crank is 90.5 stroke and the H23 is 95. Why is r/s so important when building an engine? Throw in a Brian Crower crank which is 100mm. It seems the bigger the stroke the more power...

There is a lot of info on H-T about r/s ratio. I just want to apply it to the H22 engine.

I have read that r/s ratio is importand and have also read that r/s is not important...

 

Great link!!

 

because when you have a longer stroke your piston speeds increase, and really high piston speeds are asking for something to fail

 

Yeah, that thread can make many people see general motor aplication and function in a whole new way.

 

not only does it change the piston speed, but the lower the r/s ratio the more force there is on the cylinder walls, and it also changes the acceleration of the piston throughout its rotation to be less linear because of the angle, which changes characteristics of the motor

 

If any of you get a chance, I suggest you go through the whole thread bc there's a lot of fantastic information in there other than r/s ratio too.

 

great link