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  1. #1
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    Sandman Gobi below 11KG



    Had a Sandman Atacama befor and used it for trail riding.

    https://picasaweb.google.com/1165786...9209/BeMC2012#

    But the Atacama was a bit to heavy

    Speclist:
    Frame : Sandman Gobi Aluminium
    Fork : Carver Obeast
    Hubs : 616 front and read 135/170
    Spokes : DT Swiss Silver Revolution
    Rim : Trialtech SL
    Shifters : XTR
    Front derailleur : XT with a problemsolver.
    Rear derailleur : XTR
    Stem : KCNC
    HandleBar : Extralite
    Seatpost : Easton Ec90
    Crank : E13
    Brakes : XTR
    Grips : Ergon

    As on the picture the bikeweight is 11,6kg.

    This is with:
    - a 12TPI Nate from around 1700gram (I'm waiting on my second HuDu)
    - 2 Heavy centerlock disk's (will be upgraded to XTR)
    - SLX Cassette and chain (will be upgrade to XT)
    - XTR Brakes (waiting for my Brake Force one's to come back)

    This all should drop the weight just below 11kg.
    How to land at about 10,8 (just below 24lbs) should be perfect for trail riding

  2. #2
    addicted to chunk
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    Wow nice build! How does it ride?
    Riding.....

  3. #3
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    Very nice build!
    Moonlander's
    Sandman Hogger Ti

  4. #4
    Fat & Single
    Reputation: ozzybmx's Avatar
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    Nice bike mate !
    Ti O'Beast
    Indy Fab
    One9
    Dirty Disco CX

  5. #5
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    Getting the weight that low removes the weight objection to fatbikes.

    Neat build.
    As little bike as possible, as silent as possible.
    Latitude: 57º36' Highlands, Scotland

  6. #6
    R.I.P. Pugsley.
    Reputation: Rabies010's Avatar
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    Really sharp looking bike !
    And with some carbon bits and a set of tubeless Black Floyd's i think a sub 10kg bike is within your reach.

  7. #7
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    Impressive sporting a Nate up front!


  8. #8
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    This Sandman Gobi is great inspiration. When I get back from Oz, building a superlight fatbike is top of my agenda.

    Yesterday I remembered why a light bike is good. I scrambled 1,700 feet up a precipitous track with a bike on my shoulder. Luckily it was my fixie which weighs about 9kg. Nothing like the agony of portaging the Pugsley. A very light fatbike would suit the sort of riding I like to do because it usually involves some climbing as well as bogtrotting.
    As little bike as possible, as silent as possible.
    Latitude: 57º36' Highlands, Scotland

  9. #9
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    insert jealousy here!

    i raced my Surly Necromancer at a cross race yesterday and it was extremely capable. Slower on the fireroads but made up for it in technical wet grass climbs and offcamber areas. ONE area it failed hugely on was the 20 step stair climb each lap (x8 laps or so). tried to run the first lap or 2....then ended up w a laboured walk holding the 36lb bike by the bar and downtube.
    i will have a lite front suspension fat bike for springtime :-)

  10. #10
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  11. #11
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    Nice one!!

  12. #12
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    Great bike!

  13. #13
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    Saiko, did you weigh the frame?
    (is it an 18")
    As little bike as possible, as silent as possible.
    Latitude: 57º36' Highlands, Scotland

  14. #14
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    I have the same frame (aluminum Gobi), approximately 16" (size small). Weight of my frame was just under 4 lbs.

  15. #15
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    Quote Originally Posted by Velobike View Post
    Saiko, did you weigh the frame?
    (is it an 18")
    its a Medium so it will be close to 18"not sure
    Weight naked frame : 1920 grams
    Not as light as a Salsa, but this is a 2011-2012 frame, don't know the weight of an 2013 model.

  16. #16
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    You can shave off another 200+ gr by taking the paint off - would 10 kg be possible ?

  17. #17
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    Quote Originally Posted by caminoloco View Post
    You can shave off another 200+ gr by taking the paint off - would 10 kg be possible ?
    I've been counting, but below the magical of 10kg will be difficult,expensive and probably unusable.

    I can lose a few grams from several places.

    - tubes are DH tubes of 200 grams+100-150 gram latex in each. If I use the Michelin C4 I would drop about 300-400 grams. But I would risk a lot more flats
    - Paint as you mentioned 150-200 grams.
    - Rimstrip, replacing with ductape ore something
    - Lighter seatpost, Easton EC90 is not the lightest, a KCNC would be a cheap upgrade.
    - remove the ergon grips and use foam grips
    - Saevid saddle would lose some grams
    - Snowcat rims
    - I still use a problem solver and XT front derailleur, I have a E-type XTR but the cage is to short for using 20t in front, I find the combination of PS and XT stiffer as and XTR E-type.
    - Absolute black centerlock disks
    -...

    other options like a KCNC cassette from aluminium would not nice for the show, but not usable to ride with

    I'm looking forward to a new crank option which I can not tell to much about. You probably know where I'm talking about.
    But the project is not sure yet, I should have some more news next week (But he told me that already last month )
    That crank also should drop some weight.

    So Sub 10 is possible, but I do not have the budget for it.

  18. #18
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    My Sandman Hoggar @12,8 kg (28,3 lbs), dirt included.





    The fork makes most of the difference, about 1,5 kg...

    There is not much more I can do at a reasonable cost (although HüDü:s were unreasonable). But it is on the other hand already almost 2 kg lighter than stock.

    Highlights:
    Tubeless HüDü ultralights, ghetto with light Schwalbe 20" tubes
    SRAM "XX" 9 speed cassette (second hand bargain)
    XT brakes, too good value to turn down, so powerful they allow 160 mm (Formula) discs
    Tune saddle (borrow from other bike)
    KCNC seatpost and stem (good value)
    Ti rear skewer for Trek ABP (my other bike) fits the wide hub!
    Front axle QRs replaced with bolts (front wheel removal is a pain anyway)

    I suppose the OP's Gobi must have a lot lighter wheels than stock, otherwise I can't see how it can be so light.

    If cost was no object I would build lighter wheels, but I think a set of 29er wheels will be more prioritized. It will never be really light so I will not spend a fortune trying.

    BTW I don't see any problem with the stock fd and a 20t cog. It will rattle if I go 20-11, but I don't intend to.

  19. #19
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    SHi, Why did i get husker du's that fall right of the bead making it impossible to get them tubeless
    I tried getting them tubeless with 20" schwalbe tires and I blew the tire straight of the rim time and time again

    Tubeless would be THE upgrade on my sandman!!

  20. #20
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    Yes so far, being a fat bike newbie, I found tubeless to be THE upgrade. Wire Larrys were super easy, folding HüDüs less so, but seem to work fine. Both need foam or something to fill the rim "channel" or they will not inflate.

  21. #21
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    The only way I go them tubeless was with a tube as beadlock, worked fine untill I wanted to deflate,...

    You have the stock rims?

  22. #22
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    Yes, stock Trailtech rims. I had no issues with the tyres blowing off. I actually took them up to 30 psi to set them on the rim properly. I'm still not sure I did, it's difficult to tell with the ghetto trimming in the way.

    A few more pics of the bike, still dirty.






  23. #23
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    Quote Originally Posted by saiko View Post

    I'm looking forward to a new crank option which I can not tell to much about. You probably know where I'm talking about.
    But the project is not sure yet, I should have some more news next week (But he told me that already last month )
    That crank also should drop some weight.
    Producer of the crank made it public on facebook.
    So I gues I Can talk about it now

    FATBIKES getting BIG! B.O.R FB-Crank ready SOON! | Facebook

    625 grams without BB
    double chainring.

    looking forward to test it

  24. #24
    RIDE...
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    Saiko,

    did the 170mm rear hub works ok in the sandman, I have a Hoggar Ti and it is supposed to be 165mm but there are no many options around, thanks.

  25. #25
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    Quote Originally Posted by MarcoL View Post
    Saiko,

    did the 170mm rear hub works ok in the sandman, I have a Hoggar Ti and it is supposed to be 165mm but there are no many options around, thanks.
    they work without any problem. But the guys from sandman are making an own 165mm hub. even lighter then my 616hubs.

    I'm waiting for them to

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