New fuel tank

[Jon W]

Alex, When I replaced my diesel tank I replaced the swing arm float switch with a reed switch. I also relocated the fuel fill hose to the top of the tank, and added two access ports on the top.

I created the per gallon cheat sheet by starting with an empty tank, then took a photo of the fuel gauge. Then added one gallon of diesel, then took a photo of the fuel gauge. Then a second gallon of diesel and took a photo. Repeated until I reached 23 gallons. Threw some words into the document, and it's done. Rudimentary, but will never fail. The type of switch doesn't matter. Since Antoni hasn't filled his tank yet, and may cruise primitive areas, I thought I'd pass it on. He may never use it, but then he might.

I'm playing around with a sheet to tiller set up for a similar reason. If I'm left with nothing but the emergency tiller, it would be miserable to steer any length of time with that stub they call an "emergency tiller" on a MK1.

[waughoo]

Jon,

Thanks for clarifying.  My experience with the reed switch senders is that they "jump" when going from one reed switch to the other vs the smooth sweep associated with the infinite float style Catalina shipped.  With that in mind, I would have expected a chart of gauge readings to have several photos of the same gauge possition for different gallon additions to the tank which was why I wrote what I did.


The simplicity of your chart is brilliant and provides excellent value.  Now I want one!  Might have to drain my tank and see what I can do.

[LogoFreak]

All done now! Final numbers are.

Total volume of the tank is 173.4L (45.807 US gallons), useable volume rounded down is 170L (44.9092 US gallons).

Table of resistance readings.

Fuel tank

5L = 219.8~220 ohm
20L = 168.6~168.8 ohm
40L = 132.1~132.2 ohm
60L = 112.2~114.3 ohm
80L = 99.1~99.2 ohm
100L = 85.3~85.4 ohm port/ 78.5~78.6 ohm stbd
120L = 64.4~64.5 ohm
140L = 49.9~50 ohm
160L = 36.1 ohm
173.4L =30 ohm

Super happy with this, I've doubled my fuel capacity as my previous tank the useable amount of fuel was 85L (22.4546 US gallons)

[Jon W]

Do you have any baffles in your tank?

[LogoFreak]

Yes, two baffles.

[Jon W]

Looks great. Good air and fuel communication between sections with those 45 degree corners. I wish they had at least one baffle in the aft water tank. The water really slams around when it's 1/2 full or less.