Ok, thanks, Blake (and Paul), this makes sense.
Dan
--- yd3@nvc.net wrote:
> Dan:
>
> Inside the gauge is a curved copper tube. One end is connected to the
> input line and the other to a gear train, rack and pinion, if I remember
> right. The rack is on the curved tube, and the pinion on the needles
> shaft. There might be an intermediary gear to amplify the movement.
> I've seen some use a pull wire and return spring. Pressure inside the
> tube causes the tube to want to straighten out. As the free end moves,
> its movement is transfered to the gauge needle. It works like those
> curled up New Years Eve party play things with the feather on the end
> that you blow into. You might even have gotten one at a circus.
>
> It's not necessary for oil to get into the tube. That's why a thread a
> while back suggesting bleeding the oil line to the gauge is not going to
> help a non functioning gauge unless there is a restriction in the line
> going to the gauge.
>
> Blake
Yahoo! - Official partner of 2002 FIFA World Cup
http://fifaworldcup.yahoo.com
/// or try http://www.team.net/cgi-bin/majorcool
/// Archives at http://www.team.net/archive
|