I would suggest updating the cct/system to work on proper differential
pressures - then venting isn't an issue. Ideally it would also incorporate
a g-sensor such that a prolonged turn doesn't affect the fuel level reading
(assuming there is some shorter duration filtering to deal with
turbulence), and a switch to select avgas/mogas densities. I was planning
on implementing such a system when the time came. I was also planning on a
vertical aluminum tube gauge on the outside of the tank containing a
magnetic float which triggered external level switches lighting up a simple
led gauge - as a backup and in lieu of the sight-gauge.
Cheers,
Pete
A239
On Thu, Nov 28, 2013 at 8:11 AM, Rowland Carson <rowlandcarson@gmail.com>wrote:
> >
>
> On 28 Nov 2013, at 12:40, GRAHAM SINGLETON wrote:
>
> > isn't my vent system effectively the same as the factory setup? There
> will still be a +ve pressure on the tank.
>
> Graham - thanks for pointing that out. Until now, I hadn't noticed the
> forward-pointing section at the end of the ultimate vent in your diagram as
> posted here yesterday. I had assumed the vent would finish with a section
> pointing vertically down (somewhere in the flap root area?) so as to
> generate neither positive nor negative pressure, but probably cut off at an
> angle to prevent whistles.
>
> in friendship
>
> Rowland
>
> | Rowland Carson ... that's Rowland with a 'w' ...
> | <rowlandcarson@gmail.com> http://www.rowlandcarson.org.uk
> | Skype, Twitter: rowland_carson Facebook: Rowland Carson
> | pictures: http://picasaweb.google.com/rowlandcarson
>
>
|