[Fot] Roller Rockers/Valve Lash/Acceleration/Velocity/Lifter Size

[Larry Young]

I should have mentioned the relationship between velocity and lifter 
size. You'll notice from the graph that the maximum velocity is 0.006 
in/deg.  Multiply this number by 360/Pi and you will get the radius of 
the lifter needed. 0.688 in this case.  You need add a safety factor for 
chamfer, slop, etc.  A good design should use the entire lifter to get 
the maximum performance.

Larry Young wrote:
>> Here is a graph constructed from Cam Doctor data on a stock TR4 cam - 
>> http://home.swbell.net/cartrip/TR_StockB.gif.