Auxiliary tank design for KTM 690 Enduro

Discussion in 'Some Assembly Required' started by bibo01, Sep 13, 2019.

  1. bibo01

    bibo01 Adventurer

    Joined:
    Mar 31, 2019
    Oddometer:
    17
    Location:
    Bali, Indonesia
    I have decided that next July-August I will do the Canning Stock Route unsupported with an Australian friend of mine.
    The tusk ahead is, obviously, huge and I am already preparing for it. I am in touch with a couple of ADVriders (@Fabnut, @Dee Cee ) who have already done it and I have received great advice.
    One of the many difficulties of riding this track is the heavy load that one has to carry, especially fuel. There can be 850 Km between refills, therefore about 55L of fuel are required.
    My riding partner is going to carry fuel bladders, but I would prefer inline auxiliary tanks, so I can also do without pannier racks.
    For the design I was inspired by Rock Hard Rally Gear and his tank for KTM 640 ADV:
    [​IMG]

    The bike that I will be using is this 2013 KTM 690 Enduro R:
    Bike01.jpg

    I would like to ask you for your suggestions in terms of design for a rear L/R auxiliary tank. The idea is to employ aluminium 3mm; size would be 40X40X10cm + the "bottom part". Roughly it could look like this:
    Bike01+tank.jpg
    #1
  2. Bt10

    Bt10 Been here awhile

    Joined:
    Dec 18, 2012
    Oddometer:
    811
    Location:
    Saranac,MI
    Why are you contemplating the exhaust side?
    #2
  3. bibo01

    bibo01 Adventurer

    Joined:
    Mar 31, 2019
    Oddometer:
    17
    Location:
    Bali, Indonesia
    No, I am contemplating both L and R side. The 1st picture I had was the exhaust side... :-)
    Bike02+tank.jpg

    The RR extra tank in this picture will be removed.
    #3
  4. DRjoe

    DRjoe Long timer

    Joined:
    Sep 6, 2007
    Oddometer:
    7,170
    Location:
    Sunshine coast qld
    Ive built a few rear tanks.
    If you want some advice give me a call on 0409493046 if you like

    Joe
    #4
  5. bibo01

    bibo01 Adventurer

    Joined:
    Mar 31, 2019
    Oddometer:
    17
    Location:
    Bali, Indonesia
    Thanks, Joe.
    As I am not in Australia, do you have a WhatsApp number?
    Let me know, otherwise I call you there.
    PS: Actually, I already tried to call you, but I talked to an answering machine :-)
    #5
  6. DRjoe

    DRjoe Long timer

    Joined:
    Sep 6, 2007
    Oddometer:
    7,170
    Location:
    Sunshine coast qld
    No worries, i’ve sent you a pm
    #6
  7. MotoPolo

    MotoPolo So many places, so little time Supporter

    Joined:
    Jun 4, 2015
    Oddometer:
    886
    Location:
    Portland OR
    What are your plans for luggage? If you can anchor the forward lower corner of tanks where 690 pannier rack connects you could get some structural support and use soft luggage like mosko moto r80. A challenge with a big tank is room for your boots/calves/legs - recommend mocking up with foam before cutting metal. 55l is a lot - what do the rally bikes with rear tank and two fwd tanks hold? It looks like your fwd tank is pretty large - what are the capacity plans for each tank?
    good luck - subscribed
    #7
  8. DRjoe

    DRjoe Long timer

    Joined:
    Sep 6, 2007
    Oddometer:
    7,170
    Location:
    Sunshine coast qld
    inspiration for 6861F75F-A79F-4B98-A2F2-B44BFEF4DDCF.jpeg 9D9A7063-F06B-4715-939A-B06F827290C0.jpeg 12654C74-9B66-4FC3-A560-8AF00627CB44.jpeg
    #8
  9. DRjoe

    DRjoe Long timer

    Joined:
    Sep 6, 2007
    Oddometer:
    7,170
    Location:
    Sunshine coast qld
    07743C8F-78FE-43E2-8D42-DEEFFB669999.jpeg B76AB90C-7995-4A4E-876C-A8EBA1C37CE8.jpeg
    #9
    weldpro likes this.
  10. DRjoe

    DRjoe Long timer

    Joined:
    Sep 6, 2007
    Oddometer:
    7,170
    Location:
    Sunshine coast qld
    AD8EF94A-D578-41CF-BE1B-AFA1FA38411D.jpeg 4463D85A-DA62-48F0-97FD-39561171CF12.jpeg 01B3D7A2-FA45-4189-BEEB-83F52245B454.jpeg
    #10
    weldpro and BygDaddee like this.
  11. DRjoe

    DRjoe Long timer

    Joined:
    Sep 6, 2007
    Oddometer:
    7,170
    Location:
    Sunshine coast qld
    762B36D1-ABFF-479C-A411-53EDCEBFCE35.jpeg
    #11
  12. DRjoe

    DRjoe Long timer

    Joined:
    Sep 6, 2007
    Oddometer:
    7,170
    Location:
    Sunshine coast qld
    2DECFE67-CAB0-4A2B-BB4F-30DAFA43E8A8.jpeg C9887BF5-24B4-40CB-9638-F0EA002C40A3.jpeg Sorry some of these photos are complete subframe tanks so not much help to you.
    I’ve got photos of some more dr650 saddle tank/racks somewhere which would be more like what youll need but i cant find them just now.
    #12
    BygDaddee likes this.
  13. BygDaddee

    BygDaddee Where do I get a pie

    Joined:
    Oct 26, 2012
    Oddometer:
    8,420
    Location:
    Brisbane Northside, OZ
    Have you sketched up the T7 tanks yet :D
    #13
    DRjoe likes this.
  14. bibo01

    bibo01 Adventurer

    Joined:
    Mar 31, 2019
    Oddometer:
    17
    Location:
    Bali, Indonesia
    I agree about the soft luggage and about the importance of room AND safety for your boots/legs.
    55L is required for 850 Km stretch in between refills on CSR.
    The front and standard tanks hold 30L together. The capacity plans for each tank are 18L + 9L (maybe less). The Lx side will be narrower, so in the end both sides stick out the same.
    #14
  15. bibo01

    bibo01 Adventurer

    Joined:
    Mar 31, 2019
    Oddometer:
    17
    Location:
    Bali, Indonesia
    Thanks Joe for all the pictures, inspiring stuff,...and for the chat over the phone. I also had a look at your website. :thumb
    To redo the whole subframe would be interesting, but unfortunately not an option for me.
    My main concern now is how to connect to the main fuel line. I suppose to T between the tap and the pump. Suggestions welcomed :-)
    #15
  16. DRjoe

    DRjoe Long timer

    Joined:
    Sep 6, 2007
    Oddometer:
    7,170
    Location:
    Sunshine coast qld
    simplest is to T into the line thats already on the bike running from the front tanks to rear main tank.
    Then decide if you want to rely on gravity or add a small transfer pump.
    #16
  17. DRjoe

    DRjoe Long timer

    Joined:
    Sep 6, 2007
    Oddometer:
    7,170
    Location:
    Sunshine coast qld
    Ha and i just realised thats my mates 690, its just down the road from me.
    Its a small world sometimes.
    #17
  18. bibo01

    bibo01 Adventurer

    Joined:
    Mar 31, 2019
    Oddometer:
    17
    Location:
    Bali, Indonesia
    :lol3
    #18
  19. bibo01

    bibo01 Adventurer

    Joined:
    Mar 31, 2019
    Oddometer:
    17
    Location:
    Bali, Indonesia
    :thumb
    #19
  20. MotoPolo

    MotoPolo So many places, so little time Supporter

    Joined:
    Jun 4, 2015
    Oddometer:
    886
    Location:
    Portland OR
    Somehow that photo with the tube running up the middle just seems like a bad idea - can't quite put my finger on it.
    #20
    plumer1kt likes this.