Original Posted By: "bubbleboy"
Im planning my instruments at the moment and looking at the Stewart Warner Wingsfuel tank quantity gauges. There are two models the 82472 and the 82494 fromSummit Racing. I am comparing the two and the only difference I can see is onehas a different ohms rating than the other one. Looking through the West CoastPiets site a couple of the planes are using these but I cant work out whichone is right and why the difference in ohms? One says 0 ohms empty, 90 ohms full& the other 240 ohms empty, 33 ohms full. Looking at what sender units eachhas, they are different too. Can some one please humour me if you would and explain what these mean and whichone I will need? I will be using it in a fuel tank in the nose. I assume thesesender units are compatible with 100LL?Scotty --------ScottyTamworth, AustraliaBuilding a Corvair Powered Pietenpol Air Camperwww.scottyspietenpol.comRudder, Vert stab, Elevators and 15 Ribs built...Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Better to have a Volt or an Amp gauge?
Original Posted By: "skellytown flyer"
As the heading states, if you could only have one of these, which one is betterand more useful? Im thinking the Volt Gauge as im using the John Deere setupwhich has the charge light. Maybe its better to have both?Scotty --------ScottyTamworth, AustraliaBuilding a Corvair Powered Pietenpol Air Camperwww.scottyspietenpol.comRudder, Vert stab, Elevators and 15 Ribs built...Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Better to have a Volt or an Amp gauge?
Original Posted By: John Franklin
Well I favor a Volt gage because it should be showing the actual state of chargeyour system has. an Amp gage is more old school at least in automobiles andprobably looks a little more old fashioned but it only shows whether the batteryis getting charged or dis-charged at the time. not how much is available.atleast that is the way I understand it RaymondRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Fri, 6 May 2011 05:54:09 -0500 (GMT-05:00)
Original Posted By: "Kringle"
Thanks guys....so really to differentiate between the nominal and charging voltage,when I turn the key to acc/on before starting the engine, it should readslightly lower than when the engine is running and the battery is being charged?I was going to have both but now want to fit a fuel gauge so one will need to go.Looks like the Amp gauge!Scotty--------ScottyTamworth, AustraliaBuilding a Corvair Powered Pietenpol Air Camperwww.scottyspietenpol.comRudder, Vert stab, Elevators and 15 Ribs built...Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Last Control Horn
Original Posted By: owner-pietenpol-list-server(at)matronics.com
You may not have an Excel program to open it. If you wish to be on thedirectory, it asks for the following:First NameLast NameStreetCityStateZipCountryHome BaseOccupationEmployerWk PhoneHome PhoneCellPrimary EmailPiet ModelEngineN NumberFlying? Y/NWeb SiteProject StatusCommentsI understand that Jack also asks for your SS# and mother's maiden name, butnone of us are buying into that...If you want to, you can just reply with as much info as you want, and I'lladd you to the list and update Jack.Gary-----Original Message-----
Original Posted By: "Jack"
Add my vote to the ones for voltmeter. As you mentioned, when the master switchis first turned on and the engine not running, the voltmeter should read about12.6v. Lead/acid battery cells each provide 2.1v per cell times 6 = 12.6.With the engine running normally, the system voltage should be at least 13.5v.Any voltmeter you get MUST be accurate and able to discern one from the other.Many of the automotive ones read 0-18v and don't have the accuracy or theability to tell the difference between the two critical ranges.Another advantage of the voltmeter is if the charging system dies, you have anidea of when the ignition system is going to make the big fan stop. Since youmention the John Deere alternator, I presume you are doing Corvair power. Oneof the advantages of the plain old points/condenser ignition system is thatit'll provide a usable spark well below 9v.Yet another is simplicity of installation. The voltmeter can be connected almostanywhere on the switched side of the master and neither shunt nor thick wiresare required as would be the case for the ammeter.In its favor, an ammeter in the generator feed line (actually a load meter, a laPiper) WILL tell you if you have an abnormal load from a misbehaving/shortedpiece of electrics that could precede the nasty F word, you know, the one thatrhymes with wire. A properly designed and protected electrical system shouldminimize the danger from electrical fire but we all know Murphy's Law has notbeen repealed. Also with an ammeter in the battery line (with plus/minus indications)it's REALLY easy to tell which way the current is flowing. Any currentfrom the battery to the electrical system is bad so a quick glance is allthat's needed in the cross check.Either one will work but the critical thing is being able to properly interpretthe indications.Dave AldrichRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Original Posted By: owner-pietenpol-list-server(at)matronics.com
John, the populated list can also be shared in PDF format which you shouldbe able to open.JackDSM-----Original Message-----
Original Posted By: "Jack Phillips"
i've seen that done on others... dan's piet has a cut out... but i was thinking...whynot attach the strap to the cable to one of the 1/4 bolts going thru theinsert on the upper part of the strut... does a 3/16 cable need to attach tothe 5/16 bolt ?? it would serve the same connected to the next bolt down...thenno cuttingjeffRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
--------ScottyTamworth, AustraliaBuilding a Corvair Powered Pietenpol Air Camperwww.scottyspietenpol.comRudder, Vert stab, Elevators and 15 Ribs built...Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Better to have a Volt or an Amp gauge?