Fuel Gauge Converter

[Tommiez]

So I installed the Dolphin fuel gauge ohm converter today.. It was pretty straight forward.. It had me connect power, ground and a wire going to the gauge and one the sending unit. You take the cover off the converter and move the sending unit to full and press a f button, than move it to half and hit the h button and then empty.. After putting it together and I put 5 gallons in it and it read between empty and 1/4.. then i put another few gallons in it and it was a little more than a 1/4.. I just filled it up and went a little past full.. I will see how this tank works.. before when I went about 100 miles it was empty and only took 4-6 gallons to fill it back up..

 

[Dana67Dart]

1/2 travel on the sender IS NOT 1/2 scale.

10 ohms is full
23 ohms is 1/2
74 ohms is empty

The best way to set it is to 1/2 scale would be to put 9 gallons in an empty tank then set 1/2 scale button


0 gallons is empty

4.5 gallons is 1/4 tank

9 gallons is 1/2 tank

13.5 gallons is 3/4 tank

18 gallons is full.


Or if you have a 16 gallon tank

0 = empty

4 =1/4

8= 1/2

12=3/4

16= full.

 

[j_anderson]

1/2 travel on the sender IS NOT 1/2 scale.

10 ohms is full
23 ohms is 1/2
74 ohms is empty

The best way to set it is to 1/2 scale would be to put 9 gallons in an empty tank then set 1/2 scale button


0 gallons is empty

4.5 gallons is 1/4 tank

9 gallons is 1/2 tank

13.5 gallons is 3/4 tank

18 gallons is full.

I thought the abody tank was 16 gallon?

 

[dr dodge]

i have may an Idea how someone could correct it

laser cut out of a nichrome strip with that weird non linear shaped sensor
(someone got a pic of that?)

unless you did 5-10 pts, those boxes won't fix the non-linear nature of the tank,

with simple linear vertical height measurement

 

[Dana67Dart]

I thought the abody tank was 16 gallon

18 with the exception of some 70s models like 74 or there abouts.

 

[Dana67Dart]

laser cut out of a nichrome strip with that weird non linear shaped sensor
(someone got a pic of that?)

I have CAD of the wire wrapped rheostat. But it's more than that, the length of the arm and location of the rheostat in the tank.

The shape of the tank and the curve of the gauge must be compensated for by the sender.

The tank has the cutout for the spare tire.

So the first 4 -5 gallons will drop very fast.

Then the next 10-or so gallons are pretty linear

then the bottom of the tank tapers and the last few gallons will go down about as fast as the top 4-5

 

[j_anderson]

18 with the exception of some 70s models like 74 or there abouts.

Pretty sure mine is only 16. That’s the spec AMD lists anyway for 71-76 (with single vent)


Looks like they list 68-70 as the 18 gallon tank (without a vent)

 

[Dana67Dart]

I thought it was much later.

67 is also 18 but a slightly different tank due to mounting strap

I updated my earlier post

 

[j_anderson]

I wish they made an 18 gallon with a vent. I'd buy one and get a couple more gallons!

 

[Dana67Dart]

I wish they made an 18 gallon with a vent. I'd buy one and get a couple more gallons

Add a vent to your fill tube and duplicate the 67-70 venting.