Neduro tank and fuel light

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by SS in Vzla., Apr 25, 2012.

  1. SS in Vzla.

    SS in Vzla. Totally Normal? I'm not!

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    I installed a Neduro tank on my '03 ADV with the "T" connecting at the crossover hose between the two main tanks under the bike.

    The bike will use up all the fuel in the main tanks before the fuel in the aux tank will start to go to the carbs.
    This means that when the fuel light goes on, I basically have about 3 gallons of fuel left which is "kind-of" pointless. But more importantly, taking into account that all three tanks are connected between each other, but the aux tank does not empty it's fuel until the other two are totally empty (as opposed to using the fuel at the same time in all three tanks), I'm thinking I did something wrong by connecting at the lower crossover hose... It works, but...

    I'd like to hear your experience if you connected the "T" at the hose that comes out of the petcock in the left-main-tank...
    Is the fuel in the aux tank used at the same rate than in the main tanks ? Or the bike will always use the main-tank-fuel first and then use the aux-tank-fuel?

    I did read Lobby's awesome thread on the Neduro Tank installation and decided against placing the "T" where he put it (right at the left-main-tank's petcock) because it seemed to me like there was very little room on my '03... Lobby's bike is a 990 and there might be a little bit more room (???)... Maybe my big fat hands just couldn't manage :lol3 (I did splice the hose, put the "T" right there and it seemed too cramped, so I just replaced the hose and put the "T" under the skid plate)

    Thanks for your comments

    BTW having the extra fuel just rocks!!! :clap
    #1
  2. EdGear

    EdGear Edventurer

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    Each tank has a petcock, if the aux tank is T'd into the main hose to the fuel pump then you can control where you want the fuel to come from. You could close both main tanks to use up the fuel from the aux tank first. This gets rid of the rear aux tank weight. You would need to use your odometer to judge when you need to open the main tanks.
    I just leave all the petcocks open the aux tank is pretty empty by the time the fuel light comes on.
    #2
  3. SS in Vzla.

    SS in Vzla. Totally Normal? I'm not!

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    The way you are describing is the way I expected it to work....

    Where did you place the "T" for the aux tank on your bike? Anybody knows if the main hose to the fuel pump on the 990 is longer (has more room for the T, than the 950?
    #3
  4. Sumi

    Sumi Long timer

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    The 990's fuel pump is inside the tank, so there is no hose between the tank and the pump on the 990, there is only a hose after the pump and before the throttle bodies.. So on a 990 I think you would have to connect the aux tank to the crossover fuel lines between the original tanks.
    #4
  5. zeegman

    zeegman Been here awhile

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    Someone suggested keeping all petcocks open all the time.

    I have found this to cause problems.

    On two occasions I left all petcocks open with bad results.

    I tried fillng all the gas tanks up with all petcocks open after shutting off my warmed up bike. The outside temperature was pretty hot then (90 degress F) and about 10 minutes after I filled the tanks and closed all the tank caps I had a gush of fuel spilling out of the two front gas caps. I suspect the gas vapours were expanding from the heat from the engine and pushed fuel up and out the caps. Not good.

    I then started keeping the petcock at the AUX tank off all the time except when I was low in fuel in the front tanks - works like a charm with no over flow gas spilling when filling and hot.

    Mike Z
    #5
  6. DuctTape

    DuctTape Been here awhile

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    I plumbed mine as instructed and I really like the adaptability of the tank.


    When I know where I'm at I leave the aux tank open for the range but when I'm in Indian country I close the valve since I tend to get so engrossed in the surroundings I'm not watching the odometer and really appreciate the added 2 gallons I can tap when the "Oh Crap!" light comes on and it's time to go look for fuel.:rofl
    #6
  7. SS in Vzla.

    SS in Vzla. Totally Normal? I'm not!

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    Got myself a great deal on a used tank, so no instructions came with it.

    The installation is pretty straight forward and Lobby's thread is perfect but he installed the tank on a 990.

    In case you still have the instructions lying around could you let me know where they recommend the hose to be "t'd" on a 950?

    Anybody else with a 950?

    Thanks
    #7
  8. Qwik

    Qwik Adrenaline Addict

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    This is how I used it as well. Off until I needed it. and I had the "T" tied in to the crossover line between the tanks on My 950 as well.
    #8
  9. Cpt. Ron

    Cpt. Ron Advrider #128

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    With my carbed 950, I put the Tee after the main petcock and before the fuel pump. My auxiliary tank has a shutoff valve, too. If I want to empty the rear tank first, I shut off the main petcock (the one with the lever). Doing this, the pump will suck from the rear tank and not the fronts. If I want to run the fronts first, I shut off the auxiliary valve.

    If you really want to get tricky and gauge your consumption better, turn off one of the crossover petcocks after fill-up (as well as the auxiliary tank). This way, you empty the left tank first (half of your main capacity). Note the mileage and then open one of the other tanks to continue on. Perfect for those really out of the way trips when you NEED to know your mileage.
    #9
  10. SS in Vzla.

    SS in Vzla. Totally Normal? I'm not!

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    Thanks for your replies !
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  11. crashmaster

    crashmaster ow, my balls!

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    Make sure you keep a couple of bungee cords handy for when you start jumping the bike, the tank flexes inward and the swing arm rips the metal mounting plate right off the tank. :lol3
    #11
  12. DuctTape

    DuctTape Been here awhile

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    I mounted my tank with spacers and longer bolts to move it out from the swing arm..........so far so good.
    #12
  13. Just Paul

    Just Paul Pro Cat Herder

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    Fixed that problem
    [​IMG]
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  14. Just Paul

    Just Paul Pro Cat Herder

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    can someone please post the link to Lobbys tank install?

    I own lobbys 990 now and the rear tank worked perfect for the last 3 years (taking the gas in the rear tank first when the petcock is turned on) .

    I took the tanks off to install a scotts automatic chain oiler and check the valves and the fuel lines were rotting so I replaced them along with the tline and when removing the fuel line off the petcock those broke to because the fuel line was so hard... anyways after I got everything reinstalled I have the same problem now. The fuel light comes on with 1.5 gallons in the rear tank and 1.5 gallons in the front tanks.

    this drives me crazy.
    #14
  15. crashmaster

    crashmaster ow, my balls!

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    I remember when you posted that a while back. I was going to get a welder to modify my luggage rack but never got around to it. The 2 bungee cords I put on in the ass end of Nicaragua almost 2 years ago are still there. :lol3
    #15
  16. SS in Vzla.

    SS in Vzla. Totally Normal? I'm not!

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    Already have a deep scratch on my swing arm :rofl The tank is still in place and in one piece, so I'll look into mounting some kind of braket to keep it away from touching the swing arm
    #16
  17. SS in Vzla.

    SS in Vzla. Totally Normal? I'm not!

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    http://www.advrider.com/forums/showthread.php?t=424400

    Thanks for the photo of the "bracket" ... I'll go that way
    #17
  18. Just Paul

    Just Paul Pro Cat Herder

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    #18