Battery cover / shelve a little extra storage

BB marine

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Feb 1, 2016
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Fluid Motion Model
C-26
Non-Fluid Motion Model
Grady White 208
Vessel Name
PORT-A-GEE
I moved the thruster and two house batteries to the starboard side compartment. The engine battery is still in port side compartment.There was two reasons for this project 1) to try to get the boat to sit level in the water. It has always had a list to the port.2) I am installing a custom made 27 gallon diesel transfer fuel tank in the port side compartment where the batteries were originally installed. The weight of the 3 batteries and the 2000 watt inverter that was installed on port equals the weight of 27 gallons of fuel and aluminum tank.


Port side storage with just engine battery


Batteries installed on starboard side



Battery cover/shelve with baskets - trying to use wasted storage space!
Brian Brown
Cutwater 26
PORT-A-GEE
 
When I have 27 gallons of fuel in the tank the list may be the same yes! It is a transfer tank that will be used for extended cruising. Its not a tank that at all times will be filled with 27 gallons of fuel. The tank will be used to transfer fuel to the main tank when fuel availability is limited. Worse case full tank list is the same, as fuel is removed list gets better. Its a win win more fuel less list when fuel is used :shock: Compromises!!!
Brian Brown
Cutwater 26
PORT-A-GEE

knotflying":2ian39zr said:
So if I understand you correctly the list will remain the same, but you will have more fuel.
 
That's a fairly ambitious mod. Indeed most things are all about compromises. Personally I liked your previous solution considering you don't need the fuel all the time/on every trip.

Not trying to rain on the parade, but a couple of things immediately come to mind for me. If the new aluminum tank is going to be permanently mounted then that's all wasted space on trips when you don't use the fuel. Also if the tank sits empty much of the time, particularly a metal tank like that is a big water(i.e.condensation) trap. If it's not a permanent mount then disregard the above... awesome 🙂

What is good is that if you are going to have fuel and batteries share space then a metal tank is preferable.
 
I guess this post went in a different direction. It was to show a battery cover and shelve that looks better then a bunch of wires and utilizes the wasted space in the compartment. Now it is about the addition of the transfer fuel tank. This is a project and the big questions that I had to answer 1) Where do I put an extra tank? Install an Airhead remove the waste tank install the fuel tank there, good option. Move the batteries to starboard side compartment levels the boat, and opens up an area for a fuel tank on Port side. I measured both areas and made a tank out of cardboard to make sure it will slide in the compartment easily and also fit where the waste tank is. I designed it so that the pick-up, return, sending unit and vent are in easy accessible areas but out of the way so the least amount of storage area is used also so that the large storage area of the compartment is still available.2) Do I need the extra fuel capacity? Last fall we did our first segment of the Loop 720 miles of the 5000+ mile trip. We encountered 2 areas in this trip that had fuel stop distances of 168 miles and 250 miles. With 80 gallons of capacity a maximum of 72 gallons usable ( thats if the tank is 100% full which is very hard to do). We carried two portable tanks =15gallons capacity and used them. We made the 250 mile run with 15 gallons of usable fuel left. We had an advantage of 4.5 mph current on the Mississippi and a disadvantage of 2 mph current up the Ohio. 1950rpm making 11mph Mississippi and 4.5mph on the Ohio and Tennessee for close to 100miles. If I went any faster we would have run out of fuel. At this point I decided I need more fuel capacity. When I travel the Tenn-Tom and have the 250 mile stretch to Mobile I want reserve fuel.When I cross the Gulf , 160 miles I'm not spending 20 hours out there in a 26' boat I'm throttling up to 3600 and cruising at 16kts and getting across at an average of 1.9mpg I need extra capacity. 3) How do I use the tank ? leave it full leave it empty when not needed. Full or empty? How often do we keep our main tank full? When we tow we always try to keep the tank close to empty. When we are boating and have a half tank of fuel are we worried about it being half full and getting condensation? It's a small aluminum tank that will be used enough that the amount of condensation and water it makes will be minimal and the water separator will extract it.4) What other advantages can I get from this transfer tank? Main tank fuel polishing. I will have a racor primary filter inline, one transfer pump, and 2 three way valves. I will be able to transfer fuel and fill the transfer tank from the main tank. I get fuel at a marina that has water in there storage tank and get water in my tank. I will be able to transfer the fuel from the main tank to the transfer tank polish it thru the Racor filter, removing the water. Then change the three way valves and filter the fuel coming out of the transfer tank back to main tank. The fuel going back in the main tank is clean water free fuel. Over kill yes, but I will be able to do it. How much will it cost ? Aluminum tank built to my specs, coast guard approved with labeling $420.00, transfer pump $150.00 to $200.00, 2, 3 way valves, coastguard approved fuel lines and fittings and thru hull vent $250.00 basically just over $1000.00. Is it worth it ? To me yes ! To most probably not. All higher HP Ranger/Cutwaters boats have a minimum of 100 gallons of fuel.
Brian Brown
Cutwater 26
PORT-A-GEE
 
BB marine":3okfw42m said:
I guess this post went in a different direction...
It did, didn't it? Sorry.

Covering the batteries with a non-conducting material is an excellent idea. Designing it for additional storage space is an even mobetta idea. 😀
 
Maybe go one step further. Since you have a transfer pump run a line so you can fill you truck while traveling and reduce fuel weight in the boat further.
 
Really like the idea of transfer of fuel to truck from boat to truck when traveling. . It has always been an issue in keeping the tank full to avoid condensation when boat is in storage then traveling with full tank.

Seen below is similar tray solution adding extra batteries to starboard locker but not as elegantly conceived as removable baskets. Does help with port side list as well as extended battery life.

gallery2.php?g2_itemId=44102&g2_imageViewsIndex=1
 
knotflying":1tat62er said:
Maybe go one step further. Since you have a transfer pump run a line so you can fill you truck while traveling and reduce fuel weight in the boat further.

Easily done with one more 3way valve, a fuel line , male and female fuel line quick disconnects.
Brian Brown
Cutwater 26
PORT-A-GEE
 
Transferring fuel from boat to truck may not be legal! In many states boat fuel is dyed, because no road tax is collected, and not legal for on road use. Doubt you would get caught in pick up truck but if you do it is a 10,000.00 fine. My truck was checked, I often tow off road equipment so DOT get suspicious
 
Todd":2fgs793i said:
Transferring fuel from boat to truck may not be legal! In many states boat fuel is dyed, because no road tax is collected, and not legal for on road use. Doubt you would get caught in pick up truck but if you do it is a 10,000.00 fine. My truck was checked, I often tow off road equipment so DOT get suspicious

You are correct, but many of us have taxed fuel in the boat. On a practical note though the use would be limited to how much you want to drain your boat tank and it will be diluted with taxed fuel. Personal experience leads me to believe that an isolated fuel transfer for towing convienience is a fairly safe bet.
 
Brian, If you are looking for space, there is room for two size 27 batteries forward under the "v" berth. There is a heavy cable for the forward thruster running from the existing thruster battery to the forward thruster fuse - it can easily carry current "the other direction" if you move the thruster battery forward.

I moved mine - and both thrusters perform as well or better than it did before the move. Since the engine is always running when I operate the thruster, the thruster buss is fed from the Blue Sky charging relay effectively feeding the aft thruster from the engine battery that remains on the port side.

The Forward thruster clearly should perform better (and does on mt R25) because the cable from the battery to the circuit breaker (I replaced the thruster fuses) is very short.

anyway, room for more fuel and more valuable storage. I like the battery cover - next project.
 
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