Unless your tank is a rectangular cube, any measurements based on the height of fuel in it will be approximate at best. And even then, if it is not ‘level’ on any axis, it won’t be accurate. For instance, my tank’s bottom is shaped to follow the hull shape for a secure fit. Of course, when down to 1/4 ‘full’ by a level sensor, it has much less than 1/4 tank by volume.(The same is true for automobile fuel tanks and this is why most tank gauges fall much faster from 1/2 full to empty than from full to 1/2 empty.) There are gauge calibrators available the correct for this. AFAIK, they are calibrated by adding fuel in known increments to an empty tank so that the fuel gauge reflects the correct amount of fuel, not the height of the fuel. (The calibrator is inserted in the fuel sensor wiring to change the level sensor resistance to match the fuel volume instead of the fuel level). This is likely more accuracy than typically necessary for recreational boating—adding fuel when a level gauge reaches ~ 1/4 tank will prevent the tank from ever going empty no matter what the gauge reads. II am not a pilot but suspect that given the consequences of running out of fuel at 10,000 feet, a different technology is used for airplane fuel tanks—if not, I am sure such tanks are calibrated more accurately than most boat fuel tanks! Charlie Nelson Water PhantomC&C 36 XL/kcb
Sent from the all new AOL app for iOS On Tuesday, June 27, 2023, 9:34 PM, Peter W. via CnC-List <cnc-list@cnc-list.com> wrote: Possibly. I’ll investigate. Thanks. Sent from my iPad > On Jun 27, 2023, at 8:14 PM, Korbey Hunt via CnC-List <cnc-list@cnc-list.com> > wrote: > > Can you add a sight guage? Tap holes at bottom and top of tank. Add an > elbow fitting with clear fuel line material. > > -----Original Message----- > From: Tom Buscaglia via CnC-List <cnc-list@cnc-list.com> > Sent: Tuesday, June 27, 2023 12:52 PM > To: Peter W. via CnC-List <cnc-list@cnc-list.com> > Cc: Tom Buscaglia <t...@sv-alera.com> > Subject: Stus-List Re: Accurate Fuel Tank Measurements > > I use my Hobbes meter. I take a picture at each fill-up and try to keep the > tank at least 1/2 full. I have a pretty accurate picture of my per hour > consumption. Seems close enough for me. > >> On 6/27/2023 11:08 AM, Peter W. via CnC-List wrote: >> I like to keep my fuel tank as full as possible as the best way to keep out >> water. >> >> Can anyone share their procedure to determine (with reasonable accuracy) how >> much fuel their tank holds, at any given time? >> While I have a fuel gauge, it isn't very accurate as it under-estimates how >> much fuel is in tank (by several gallons). >> I'm thinking of trying to use a wood or plastic dowel, but that would >> require a "straight shot" to the tank bottom (I.e., no bends or >> obstructions). >> Any thoughts? >> >> Pete W. >> Siren Song >> C&C 30-2 >> Irvington, Va >> >> Sent from my iPad >> Please show your appreciation for this list and the Photo Album site and >> help me pay the associated bills. Make a contribution at: >> https://www.p/ >> aypal.me%2Fstumurray&data=05%7C01%7C%7C611b354ad52e4baad33e08db77480dd >> 3%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638234923578751716%7CUn >> known%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haW >> wiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=K%2F2MOZ%2FYuWsk9GmmWQRi7lbCZYe >> QLMP9jj1XIfyy5hA%3D&reserved=0 >> Thanks for your help. >> Stu > > -- > (\ > Tom Buscaglia > SV Alera > C&C 37+/40 > Vashon Island WA > (305) 409-3660 > http://www.sv-alera.com/ > Please show your appreciation for this list and the Photo Album site and help > me pay the associated bills. Make a contribution at: > https://www.paypal.me/stumurray > Thanks for your help. > Stu > Please show your appreciation for this list and the Photo Album site and help > me pay the associated bills. Make a contribution at: > https://www.paypal.me/stumurray > Thanks for your help. > Stu Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu
Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu
