Date:         Sun, 3 Jun 2001 04:34:44 -0500
Reply-To:     Mark Ingalls <ingalls_mark@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Mark Ingalls <ingalls_mark@HOTMAIL.COM>
Subject:      Re: WBX Mods Graph
Comments: To: lalofs@ENTERACT.COM
Content-Type: text/plain; format=flowed

Larry wrote:

>Mark:
>   Could you (or anyone else) explain how ratio rockers work and what the
>specs (1.3, 1.25, etc.) mean?
>TIA
>Larry A.


Well, wrong Mark but what the heck.


I have Berg 1.4 ratio rockers on my type 1 (beetle).

The stock rockers were 1.1. So if the cam lifted the lifter by 1 inch, the
stock rockers multiplied that by 1.1, so the valve was moved 1.1 inch.


If a cam lifts the lifter by 1 inch and you have 1.4 ratio rockers, the
valve will open  1.4 inches.



The rockers are like a teeter-totter. If you make one end of the
teeter-totter longer than the other, then that end is going to move further;
i.e. more lift.

Mark Ingalls
85 GL
75 Bug

P.S.  The stock valves only open about .3 inches, I just used 1 inch for the
example. So with the ratio rockers my valves get opened somewhere around .4
inches.




Mark Ingalls
Nebraska
75 Beetle
85 Vanagon
with a Digijet Digitool on the shelf (waiting for warmer weather, in case I
zap something)

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