I did not mean to add another vent hole. I meant to run a vacuum line
from the top of the damper to some sort of a vacuum guage, ideally an
electronic one so that I could datalog the output. Modulo the
dampening from the oil, if the piston rise can be calculated by
position = ((pressure differential * piston area) = force) / springrate
Then at least in steady state conditions, or slowly changing
conditions, I should be able to calculate where I am on the needle at
any given time.
The "vacuum" line for the vacuum advance is on the other side of the
butterfly from the piston, so I can't just feed off of that.
lrc
On Mon, Mar 10, 2003 at 04:12:19PM -0700, Bill Meyer wrote:
> Larry,
>
> SU's have a vent hole in either the damper cap or the body of the air
> chamber - I believe its at the base of the upper section, right where it
> bells out. The carb will not operate properly with two vent holes.
>
> Bill Meyer
>
>
> > The carb is an HIF-44. I've noticed that the damper cap does not have
> > a vent in it like my old HS-2s and HS-4s did. I was considering
> > getting another damper cap and attaching some sort of vacuum sensor to
> > the damper cap and at least under steady state conditions that should
> > correlate to piston rise.
> >
>
--
I've found something worse than oldies station that play the music I used to
listen to. Oldies stations that play the "new" music I used to complain about.
lrc@red4est.com http://www.red4est.com/lrc
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