---------------------------------------------------------- Pietenpol-List Digest Archive --- Total Messages Posted Fri 01/02/04: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. PM - Re: calibrating airspeed (Richard Navratil) 2. PM - Re: Re: Piets in California?????? (mytyweav@earthlink.net) ________________________________ Message 1 _____________________________________ - From: "Richard Navratil" Subject: Re: Pietenpol-List: calibrating airspeed --> Pietenpol-List message posted by: "Richard Navratil" Hi Oscar Your post came thru ok. There are others who seem to be having the same problem as you. Dick ----- Original Message ----- From: "Oscar Zuniga" Subject: Pietenpol-List: calibrating airspeed > --> Pietenpol-List message posted by: "Oscar Zuniga" > > Happy 2004, Pietenpolers; > > The list doesn't seem to be working very well, but I'll try this one anyway. > It's a post that was on the KRNet a few weeks ago but it's an interesting > thing to try if your airspeed indicator doesn't read accurately. Usually > there isn't much you can do to realign it with reality, but this is worth a > try: > ======================== > Hi folks > > I came across a neat article by Tony Bingelis on the net last night. Do a > google > search on pitot static error. Tony described a really simple method for > adjusting any airspeed error provided you have an external static tube (as > distinct to a fuselage or interior source). He suggested an o-ring be slided > along the tube. Locating it in front of the little static holes in the tube > results in a drop in static pressure and an increase in indicated airspeed. > Behind the holes leads to the opposite. Distance from the hole determines > amount > of change. Once the correct position is ascertained, the o-ring is replaced > by a > more permanent fixture, eg. a small band of metal or filler. I guess > something > similar could be obtained on a fuselage side static vent using a small mound > of > something either in front or behind the hole that can be sanded down > accordingly > to suit. > > I reckon my airspeed [on his KR] is under-reading by about 12 knots in the > cruise because > the static is affected by high pressure under the wing. The above is so > simple > and apparently accurate that I can't wait to try it out and compare with a > three > leg GPS readout at different speeds. Certainly heaps easier than relocating > tubes etc. It will also hopefully resolve a minor altitude error picked up > by my > annual transponder check whereby, for example, altitude readout on the > ground by > slight evacuation of the static to give 1000 feet was not obtained until > 1100 > feet or so in the air. > > The Martindale Family > 29 Jane Circuit > TOORMINA NSW 2452 > AUSTRALIA > ================================ > Oscar Zuniga > San Antonio, TX > mailto: taildrags@hotmail.com > website at http://www.flysquirrel.net > > _________________________________________________________________ > Make your home warm and cozy this winter with tips from MSN House & Home. > http://special.msn.com/home/warmhome.armx > > ________________________________ Message 2 _____________________________________ - From: "mytyweav@earthlink.net" Subject: Re: Pietenpol-List: Re: Piets in California?????? --> Pietenpol-List message posted by: "mytyweav@earthlink.net" Hey.... Thanks for the note. We were buried in weather and totally unable to attend. It killed us all. We were looking forwared to bringing in the new year with a blast. We will absolutely make it in the days soon to come. I will give you a little lead time so we won't have a problem. So glad the rest of the enthusiast's had a good time at George's place. He knows how to cook to keep em smilin'... Weav Original Message: ----------------- From: Darrel E. Jones wd6bor@vom.com Subject: Re: Pietenpol-List: Re: Piets in California?????? --> Pietenpol-List message posted by: "Darrel E. Jones" Fred, It was a crummy day but there were still a few folks at Schellville. Sorry I Missed you, butmaybe you can stop by in better weather. I'm at Sonoma Skypark, in hangar K-1 if you make it by there. Darrel ----- Original Message ----- From: "Fred Weaver" Subject: Pietenpol-List: Re: Piets in California?????? > --> Pietenpol-List message posted by: Fred Weaver > > Darrel... Will you be at Schelleville on New Years Day? We will be > there weather permitting.. Wittman Tailwind W10, RV6, Cessna 170, Rans > S6 and maybe a Cessna 340 twin.. All from Jackson/Westover O70. > Fred Weaver > Chris is skiing at Kirkwood today with kids and friends.