[CAUT] Digest, Vol 1103, Issue 85 Moving Wippen Rail

[Keith Roberts]

Any gain in touchweight is a product of a reduction of friction or a gain in
leverage, Both of which can happen when aligning to the lines of
convergence. (Did I miss any other things?) Friction is measurable and has
been eliminated so that leaves one thing.

I repeat, the load arm of the wippen is to the jack center pin. The jack is
only a transitory post and is not a lever. Please define what the word
"jack" means in this case if it is not what I say.

Keith Roberts

On 10/31/07, Jon Page <jonpage at comcast.net> wrote:


Any gain in touchweight while moving the wippen rail is a product of
> aligning to
> a line of convergence not ratio change.  If ratio were the case then
> the further back
> you move the rail beyond convergence, the better the touchweight still
> becomes.
> --
>
> Regards,
>
> Jon Page
>
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