In w.n. 3506 the pneumatic lines are run through the stringer tunnels in the formers in the empennage. peering back I can see many opportunities for one of the lines to get pinched.
On Fri, Aug 25, 2023 at 2:49 AM Rob Thompson <amessageto...@gmail.com> wrote: > One line is to the static in the side of the pitot for the ASI and > Altimeter and the other to the total energy probe for the vario. The other > line off the vario goes to the bottle. > The vario already has a callibrated internal orifice. > I don't recall ever seeing any restrictors in any of these lines. I > imagine a restrictor would dampen an instrument but also result in more > lag. > regards > Rob > > Rob Thompson > 0429 493 828 > > > > On Fri, Aug 25, 2023 at 2:59 PM Ric Sutton <ricinthel...@outlook.com> > wrote: > >> afternoon all >> i had my altimeter out for repair recently and i thought while i was at >> it i would get the vario zeroed at the same time (it has always read about >> three quarters of a knot in lift even sitting in the hanger) i had a >> friend reinstall the vario. however i noted that the vario was a bit >> 'laggy'. on inspection i noted that my friend had connected the static that >> was on the altimeter to the vario. when i reconnected the other static line >> to the vario it appeared to function the way i remembered it. >> does anyone know if there is a fixed orifice (restriction) in one of >> these static lines or do i need to investigate further for wasp nests etc. >> And further to, if one line is supposed to have a restriction in it, which >> instrument does it go to. >> thoughts? tips? suggestions? >> keep well, play well, stay safe and be nice. >> >>
