[2.7RACER]

Hi Mark,
Thanks for sharing your work in looking into roller rockers. I down loaded your avi file and really appreciate the effort you have put into this project. Well beyond my abilities with ACAD.
I have studied the Porsche rockers and found them to be more than a simple push here react there.
After studying the rocker carefully it became obvious this is a variable ratio design.
The wear pattern of the pad contacting the cam lobe indicates the rocker is at it's highest ratio
(approximately 1.5 to 1), when on the high side of the cam lobe.
Conversely at the base circle the ratio is less. Exactly what it is eludes me.
My measurements indicate something in the 1.4 to 1 range, maybe less.
I applaude your efforts to improve this design.
The engineering of ths part as it comes from Porsche is interesting to say the least.
I would certainly like to hear from John Dougherty regarding his view of possible improvements in this area.
Again, Thanks for sharing, great commentary from all.