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Re: [Fot] Roller Rockers/Valve Lash/Acceleration/Velocity/Lifter

To: Larry Young <cartravel@pobox.com>
Subject: Re: [Fot] Roller Rockers/Valve Lash/Acceleration/Velocity/Lifter
From: "Greg \"Lunker\" Hilyer" <lunkercars@earthlink.net>
Date: Mon, 7 Jan 2008 15:08:36 -0700
Many thanks for all the info Larry. Great stuff and obviously lots of  
work. I think it's beginning to sink into my [thick] head.
All the best to you and yours for the new year. Say hi to Tom for me.
Greg "Lunker " Hilyer
TR4 #314
Albuquerque NM
On Jan 6, 2008, at 8:19 AM, Larry Young wrote:

> 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.
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