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  1. #1
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    Lightest Fatbike

    Who thinks they've got the lightest Fatbike out there? How light can you get with these beasts and how I'd you get there? Just curious. Oh, and these should be real-world weights unlike those many manufacturers choose to list!

  2. #2
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    Yes please, let's see them!



    Weight 907 SS 26.74lbs

    Joke was I built this 907 up for a 24 hour race (BFs were temporary), but I ended up using my Pugsley in full dress mudguards etc, and I think it weighed over 40lbs in race mode.
    As little bike as possible, as silent as possible.
    Latitude: 5736' Highlands, Scotland

  3. #3
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    Quote Originally Posted by Velobike View Post
    Yes please, let's see them!



    Weight 907 SS 26.74lbs

    Joke was I built this 907 up for a 24 hour race (BFs were temporary), but I ended up using my Pugsley in full dress mudguards etc, and I think it weighed over 40lbs in race mode.
    Velocity p35 rims or something? Those rims look tiny.
    Try this: HTFU

  4. #4
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    Quote Originally Posted by rockcrusher View Post
    Velocity p35 rims or something? Those rims look tiny.
    Bought in Australia - Dice 40mm Two Six. Popular with the DH riders about 10 years ago (been using that set of rims on various hubs for 8 years and they're still perfect). Rim weighs 790gms.
    As little bike as possible, as silent as possible.
    Latitude: 5736' Highlands, Scotland

  5. #5
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    Only girls need to be concerned about a light fat bike.

    (my pugs is 32.5 pounds)

  6. #6
    will rant for food
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    Quote Originally Posted by deuxdiesel View Post
    Only girls need to be concerned about a light fat bike.

    (my pugs is 32.5 pounds)
    I'm of two minds here.

    Heavy fat bikes plow over whatever! Woo! My heaviest was more than 40 lbs.

    Heavy fat bikes are hard to carry and throw over large things =/
    Latitude: 44.93 N

  7. #7
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    Agreed on the momentum issue. My wife's Wednesday weighs 36 with the Lefty, but I'm going to make a concerted effort to drop that significantly. To put it into perspective, my Pugs weighs 20% of my body weight, hers is 30%. If I can get to 30 (without the lefty) on hers without going too crazy, I'll be happy.

  8. #8
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    28.5# 907 with real wheels :-) lol
    Attached Images Attached Images  

  9. #9
    Fatback
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    This was just to see what we could do with the parts we had.
    Attached Thumbnails Attached Thumbnails Lightest Fatbike-resize.jpg  

    Speedway Cycles owner http://fatbackbikes.com

  10. #10
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    Oh my, those are nuts! How light are they if you remove the tubes and tires?
    2012 Intense M9
    2012 Pivot Mach 5.7 Carbon
    2008 Look 595
    2007 Custom Litespeed Sewanee

  11. #11
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    Quote Originally Posted by thirstywork View Post
    This was just to see what we could do with the parts we had.
    That's impressive, especially with gears.
    As little bike as possible, as silent as possible.
    Latitude: 5736' Highlands, Scotland

  12. #12
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    Quote Originally Posted by Velobike View Post
    That's impressive, especially with gears.

    What really surprised me with fat bike parts is how not heavy the wheels and tires actually are. I compared my built up Hope Pro2 with DT Comps 3x to Sun Ringle MTX33 29 rims (a hefty freeride rim) with Panaracer Rampages and WTB Dissents on it and it came within 2lbs of the Marge DH built to a Surly new hub with 14g spokes, rim strip, Larry Tire and a Surly Tube. If I chose to build up my own wheel i could easily get it lighter to where the weight difference is possibly negligible. Rubber always weighs less than metals. I would like to build a Marge lite to a Paul WHUB with DT competition or even Sapim spokes and run that tubeless. Bet it would be really close to my 29er front wheel.
    Try this: HTFU

  13. #13
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    Quote Originally Posted by thirstywork View Post
    This was just to see what we could do with the parts we had.
    That will be a rough ride with no pedals but you could definitely get it lighter with some ww parts. Can't believe it's that with full gears

  14. #14
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    Like it, my Muktard Susitna setup weighs 46 loaded up, or twice Thirsty's experiment.

  15. #15
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    Quote Originally Posted by rockcrusher View Post
    What really surprised me with fat bike parts is how not heavy the wheels and tires actually are. I compared my built up Hope Pro2 with DT Comps 3x to Sun Ringle MTX33 29 rims (a hefty freeride rim) with Panaracer Rampages and WTB Dissents on it and it came within 2lbs of the Marge DH built to a Surly new hub with 14g spokes, rim strip, Larry Tire and a Surly Tube. If I chose to build up my own wheel i could easily get it lighter to where the weight difference is possibly negligible. Rubber always weighs less than metals. I would like to build a Marge lite to a Paul WHUB with DT competition or even Sapim spokes and run that tubeless. Bet it would be really close to my 29er front wheel.
    Those are surprising figures you came up with there. Two pounds extra just thinking about the moment of inertia is large but I would have expected more than that. Thanks for posting.
    2012 Intense M9
    2012 Pivot Mach 5.7 Carbon
    2008 Look 595
    2007 Custom Litespeed Sewanee

  16. #16
    How much does it weigh?
    Reputation: Borgschulze's Avatar
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    Intense Mag30 rim = ~850grams
    Nokian Gazzaloddi 26x2.6 = 1350grams
    Nokian Gazzaloddi 26x3.0 = 1550grams

    My Fatback has...

    Fat Shebas = 850grams
    Larry's = 1350grams?

    Hilarious that my Fatback wheels weigh less than some wheels people used to DH on... I used to DH on... Can't believe that... when I get my new MTB built up, it's going to feel so fast :P

  17. #17
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    Quote Originally Posted by thirstywork View Post
    This was just to see what we could do with the parts we had.
    no front brake, no pedals and what rims are those? more pics perhaps
    your 29er may float over roots and rocks, but my superlight 26 just plain floats

  18. #18
    Fatback
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    Quote Originally Posted by lamard View Post
    no front brake, no pedals and what rims are those? more pics perhaps
    Those are the 50mm rims. Old style Endo's as well, which were much lighter.
    Speedway Cycles owner http://fatbackbikes.com

  19. #19
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    31lb, 12oz. But it's only a 1x7. Uma 90s tubeless.

  20. #20
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    Not the lightest, but real world weights

    I was paying attention to weight, but not a slave to it, when building this bike. (I have a single speed and road bike for that game.) Significant savings came from E*13 crank, Marge Lite wheels, and carbon bars. Potential weight savings could be achieved with lighter pedals, stem, grips, and brakes. Realistic future weight savings may come from carbon fork and Surly light tubes. I only went the route of a titanium frame, because I could afford it and I have to work with paint quality issues all day. Current Weight: about 32 lbs.
    Attached Thumbnails Attached Thumbnails Lightest Fatbike-small-17-final-build.jpg  


  21. #21
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    ^those pedals and cassette aren't helping the weight either.

  22. #22
    Sup
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    my 907 is really light till I put the wheels on

    Sj
    I am slow therefore I am

  23. #23
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    who's got a lightweight AL Mukluk? Just curious what that beast weighs. It looks like the light bikes here so far are all ti, and the AL bikes are mostly porky. Truth?

  24. #24
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    I have an old Ti Fatback frame like Thirstys built up between 27.5# and 29.5# depending on summer or winter wheels. Also a 2011 Mukluk at just over 30# but the two frames are only grams apart, it is my sons bike and he has to buy his own light parts. We also have a small alu Fatback and it is just under 30# also with a few heavier parts than the Ti.
    Latitude 61

  25. #25
    addicted to chunk
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    Yah, bikes with "all" the parts included would be useful LOL...can't ride a bike without pedals.

    Mine pre-suspension fork was hovering right around 30 lbs. After adding the SC32 it's about a pound heavier, but way more fun to ride.
    Riding.....

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