KTM 950/990 Adv UNDERSEAT TANK

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by rade, Aug 18, 2012.

  1. rade

    rade Adventure enthusiast

    Joined:
    Dec 29, 2008
    Oddometer:
    201
    Location:
    Prague
    Johan,
    I fully understand... having some important tools with you is always good, especially on long adventures... therefore as complementary to my underseat tank, I have developed carbon skid plate, with extra storage place for tools, spare tube or something else you find usefull...

    here is the pix:

    [​IMG]

    and here is the tank - so it is clear this thread is about the tank :-)

    [​IMG]

    Both tanks and skid plates are available - just drop me a message :-)
  2. geoffooooo

    geoffooooo Adventurer

    Joined:
    Mar 22, 2013
    Oddometer:
    30
    Location:
    northern NSW Australia,
    I've installed one of Rades underseat tanks. Bloody work of art I must say and am very happy with it, I think. I just have one concern. I've yet to do a big trip with it and a fully loaded bike, but I have been jumping the bike over some mounds, trying to bottom the rear suspension. And I have bottomed it, and the tire does just rub on the underseat tank at full compression.

    It's probably nothing to be concerned about, however has anyone heard any horror stories of the tire ripping the underside of the tank? If it has happened, I'd have to think about some sort of way to increase the clearance?


    Cheers.
  3. geoffooooo

    geoffooooo Adventurer

    Joined:
    Mar 22, 2013
    Oddometer:
    30
    Location:
    northern NSW Australia,
    I should add that the tank comes with a really tough looking shroud that protects the plastic of the tank from the rubber tire. Hopefully it's nothing to worry about.:clap
  4. Giorgio

    Giorgio Adventurer

    Joined:
    Jul 29, 2014
    Oddometer:
    60
    I everyone,
    The rear underseat tank is one of the most beautiful ideas for 950/990 adventure...
    But I've abs and original airbox.
    Any idea? I don't like very much the cpr filter.
    I've the MSR single exhaust system, this [​IMG]
    There is the possibility of putting the abs pump in the space where there was the original collectors's Y? Off course in a aluminium self made box
    Thanks
  5. micky1

    micky1 1190 pioneer

    Joined:
    Aug 30, 2014
    Oddometer:
    78
    Location:
    Bath. UK
    agreed...how do we move the abs to get a under seat tank in?
  6. Bowser

    Bowser Been here awhile

    Joined:
    Dec 23, 2007
    Oddometer:
    224
    Location:
    Gloucester
    for anyone remotely interested, with the underseat tank and a set of Safari tanks, I got 800km before the yellow light came on, now not sure how far I get with the big tanks when the light comes on but sure as hell its more than the 15km or so I get on the standard tanks. :evil
  7. Unruled

    Unruled 950S

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    Sep 26, 2012
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    Drugs, wooden shoes and windmills
    That's some sick range _O-
  8. Bowser

    Bowser Been here awhile

    Joined:
    Dec 23, 2007
    Oddometer:
    224
    Location:
    Gloucester
    Yep all by accident, I got the Rade tank, because the Safari ones are way too expensive, then a set came up at a very very good price second hand, so I jumped at them, but having already done the work with the underseat tank, there was no point in taking it out. I use the underseat tank more as a large reserve now, gives me 70 miles or so.
    Which is just as well its amazing how far you can travel in Europe evenings/night without finding a gas station open!!

    Good thing the bike came with a Renzaco Seat, its just about good enough for 500 miles before I need a break.
  9. micky1

    micky1 1190 pioneer

    Joined:
    Aug 30, 2014
    Oddometer:
    78
    Location:
    Bath. UK
    you can move the abs with the rotweiler air filter kit.

    heres a link http://www.advrider.com/forums/showpost.php?p=23288783&postcount=9066
  10. burntaler

    burntaler braaaaaap

    Joined:
    Jul 5, 2013
    Oddometer:
    20
    Today I completed the installation of Rade's underseat tank. :clap

    The tank fits perfectly into the rear frame. Craftsmanship and quality of the tank are top notch. In the latest version, Rade has upgraded the fixation. The brackets are laser cut from stainless steel. They have a perfect fit. The package came without instructions. But it is not very difficult to find out how the parts fit together.

    [​IMG]

    Because the tank sits right above the exhaust pipe, Rade supplies a self-adhesive heat reflector. I put the tank on top of the sheet, marked the tank shape and used a scissor to cut it out.

    [​IMG]

    The provided material is very flexible and sticks well to the tank (still sticking perfectly after 3,500 km of riding with a quite some rain)

    [​IMG]

    It is necessary to cut open the rear fender plastic as the tank is higher than the sub-frame. In fact it reaches right to the bottom of the seat pan. Rade squeezed the maximum out of the given space. As a consequence the breather tube can't lay on top of the tank. Otherwise it get's squashed by the seat. So I had to lay the tubes a bit to the around the tank.

    [​IMG]

    I filled the gap between the frame and the tank with a thin layer of closed cell foam. This prevents water and dirt from being thrown up to the seat pan.

    [​IMG]

    The breather tube runs all the way on the left side along the frame to the steering head. As Rade wrote somewhere... it has to end at a point that is higher than the tank. Otherwise you will certainly leak fuel from the breather. When pumping cold gas at the station, it is pretty quickly heating up due to the exhaust pipes that pass underneath the tank and literally cook the gasoline :huh. This will cause the gas to expand and with the tank full, pushes fuel into the breather tube where I can see it floating. With the shown setup I have no problem with fuel leakage.

    [​IMG]

    The end of the breather is plugged to prevent dust from entering the tube. :thumb

    [​IMG]

    I found a place for the fuel valve on the left side of the engine. At this point it is perfectly reachable when riding. However, this spot might not be possible when running those crash bars. But I don't have these. :deal

    [​IMG]

    While having many advantages, there are a few cons, too. Biggest weakness: Refueling can be pain because the seat has to be always taken off at the pump. If you run a normal tank bag - the bag has to be removed, too. Watch the cars lining up behind you :evil. Also, the tank is very shallow at the filler cap. The pump must have a nozzle than can be well controlled. Pumping at full flow simply causes a full mess. Because of refueling being a bit cumbersome, I use the tank mainly as a reserve and open it as the last of the three. Regarding the package I wished Rade would have completed the kit with some clamps for the fuel hose as well as a better quality tube for the breather. First it is ultra soft, but once in contact with gasoline, the tube starts to shrink and gets hard. I will probably change it on the next occasion. Last but not least I got the tank without any instructions. It is not difficult to fit it, but some tips and tricks can help to avoid mistakes during the installation...

    All in all Rade's underseat tank is an excellent product :thumbup. It is well designed and produced. Its fit is outstanding and after the installation the reservoir is not visible from the outside. I have now around 100 Km of extra range build in:clap.

    safe riding :ricky
    [​IMG]
  11. 1coolbanana

    1coolbanana Long timer

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    2,667
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    NW Sydney, Australia
    Very nice job :D
  12. Piston

    Piston Been here awhile

    Joined:
    Mar 4, 2007
    Oddometer:
    932
    Location:
    Central MA
    I'm sure it was already mentioned, but I read through most of the thread and didn't see it. How much does this setup weigh?

    Do you all notice any difference in riding off road with the tank full, then empty? (regarding suspension/sag?)

    I already have the Rottweiler filter, and will be getting the storage bin as well, so I could use that for my toolkit and not really lose much space.

    I currently have about a 160 mile range. With the additional 2 gallons of fuel, I could be up to 230 miles. That's exactly where I'd like to be for range!


    Another question, I have a power commander on my bike, and it sits right at the back of the "under seat" area. Would this still fit here or would I need to relocate?

    [​IMG]

    [​IMG]
  13. BykBoy

    BykBoy Meshuganeh

    Joined:
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    Oddometer:
    583
    Location:
    Reston, VA
    I keep the rear full by keeping the valve shut until the fuel light comes on. This keeps more weight on the back side of the bike. When the the valve is open, all the fuel from the rear tank floes into the front tanks and the weight shifts forward again. Overall, the bike feels more balanced with Rade's underseat tank.

    While I don't have a PC, It looks from your photo that it will fit in the same spot with the tank installed.
    :freaky
  14. Bearded Hooligan

    Bearded Hooligan Moto Addict

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    688
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    Thomasville, GA
    Does this also fit the Super Enduro?
  15. rossguzzi

    rossguzzi 990 Adv.

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    Bottom left hand side of OZ
    Doubt it.
  16. HeatXfer

    HeatXfer Bad knees

    Joined:
    Feb 18, 2008
    Oddometer:
    799
    Location:
    S.F. Bay Area
    Yes, it will fit.

    More info & pics here: Radgarage
  17. Piston

    Piston Been here awhile

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    Mar 4, 2007
    Oddometer:
    932
    Location:
    Central MA
    Thanks for the link, that answered my weight question, 3.5lbs, not bad at all!
  18. rade

    rade Adventure enthusiast

    Joined:
    Dec 29, 2008
    Oddometer:
    201
    Location:
    Prague
    Few pix:

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    cheers
  19. micky1

    micky1 1190 pioneer

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    Aug 30, 2014
    Oddometer:
    78
    Location:
    Bath. UK
    thats goood :1drink
  20. zgfiredude

    zgfiredude RMAR

    Joined:
    Nov 23, 2009
    Oddometer:
    1,000
    Location:
    Grand Junction and Aspen, Colorado
    Rade, where did the mounting clamps on the blue bike come from? Are they a new type of attachment? :D