I've often wondered why you couldn't put a cross-over line in the bottom of the tanks so they would self level. It works very well on BIG RIG saddle tanks. Seems to me the line could run across the transom and be out of the way.
Just a thought.
i have two tanks and a manual swith, and one gas gauge with a toogle switch to check either side, i cant tel a difference when i run one side dry and the other is full
this boat will be the death of me
stick the damn flag rod in there................
Dont know if its right, but it works for me.
I have both feeds from my tanks going to a T then right to the fuel pump.
Whenever I fill it up, Its almost identical amounts of fuel in each tank.
I spend most of my day just floating around, so i guess once the air is out of the system, they self level..
Just my .02
My last tanks fed from the bottom (gravity) and would self-level. The two sets of tanks I have now feed from the top. Although they're usually pretty close on levels, I don't think they "self-level".
Plumbed with equal lengths of hoses into a "T", then the filter, then to the fuel pump. One thing I know for sure is if one tank empties...........you're effectively out of gas even if the other one has fuel in it. I'm not plumbed in such a way that I can shut the feed off from the individual tanks.
Might just have to rectify that on the new boat.
Last edited by Squirtcha?; 04-17-2008 at 07:45 AM.
Interesting. I just got my boat so haven't had a chance to test it yet but I think I will do some more investigating as to how they are fed into the fuel pump. I have one gas gauge. The previous owner told me when the gauge shows "full" both tanks are full. When I have a "half" tank on the guage then only one tank left. Might have to do the yard stick test when I am out the first time to see the levels and if they match.
"You never slow down, you never grow old."
If you have top feed tanks. If the fuel feed hoses are the same length. Mount the tee lower than the tanks or as low as possible, then to fuel filter and fuel pump. Then they will both feed the same, so only one guage is needed. Personally I just keep a yardstick in the boat and check it manually. Pat
I have been trying to figure out why my tanks wouldn't self level... My "T" is above the tanks, duh!
Last edited by Constant840; 04-17-2008 at 01:11 PM.
some people say that if your 2 feed lines running to the "T" are the exact same length then you will draw off both tanks at the exact same rate... for cheap insurance you can install a fuel switch or use a pair of ball valves
like i said, hight school science class. remember?
My boat has two tanks and one guage with a toggle switch on the dash.
Flip the switch to the right it reads the right side and draws from the right side. Flip the switch to the left side it reads the left side and draws from the left side. I just draw from one tank @ a time about a 1/4 tank from each side to keep balance.
The senders are a variable resistor. Two resistors of the same value in parallel will yield half the total resistance. This means that two senders in parallel will yield half the total resistance when both tanks are empty, giving a half full reading. When you fill up one side, one of the senders will have 0 resistance to ground, thereby shorting out the other sender, giving a full indication with only 1 side full.
So you have to hook a SPDT (single pole double throw) toggle switch up to switch the gauge between the two tanks. This type of a switch will have 3 terminals on the backsie of it. The "S" terminal of the gauge goes to the center terminal of the switch. The right tank sender goes to one of the two end terminals of the switch, while the left sender's hot goes to the other end terminal of the switch.