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I scrapped this build, new pics on page 2.
Going tubeless is a good move. No idea what your stock tubes weigh, but considering what a lot of fat bikes run as standard, you could save some serious weight for very little money.
edit: A single stock tube! Plenty of other people have success using cheap Q-Tubes weighing about 250 grams each. Just swapping to those tubes could save close to 700 grams!
A brake upgrade also sound like a good move. If you've got the budget, a switch to Formula R1 can save decent amounts of weight (as would XTR and a few other brands). For a low budget alternative, see if you can get a good deal on low/mid level Magura - they're surprisingly light compared to other brakes in the price range. Even if you don't change the brakes at this stage, KCNC/Ashima rotors will save some weight and be pretty cost effective. If you can find some light, alloy backed pads for your existing brakes, you should also get a decent saving there.
e*thirteen make a spider/ring that would save some weight if you decide to switch to 1x10. The direct mount style FD's aren't exactly light and you get to ditch a shifter so it's a worthwhile saving if you can live with the reduced gear range.
Just the usual stuff other than that.
Lighter cassette - I imagine the stock cassette is pretty heavy. A good saving with something like an XG-1080 cassette.
Post/bars/stem - Mt Zoom bars are an example. Even some eBay carbon. KCNC have some good alloy options. Uno stems are great value for money etc.
Foam grips, fork expander, seat clamp etc - cheap places to save a few grams.
Maybe a bit of bolt tuning too?
jooo wrote:Don't know about sub 20 yet.
Fairwheel have probably one of the lighter builds so far (not surprising) and from a thread on MTBR:
The most interesting thread I have seen is this one.
http://forums.mtbr.com/weight-weenies/a ... 87993.html
There are also several companies that make light carbon rims. If you want to get carried away look at the wheels they the heaviest part.
http://www.borealisbikes.com/parts/carbondale-rims/ 615g rims
http://us.sarmabikes.com/products/carbon-rim-fatbikes 650g rims
in 65mm instead of 80mm
Or non tubeless ready
HED rims are tubeless ready. Kuroshiro ensō685 rims seem to be the lightest so far.
Sure wheels are a great way to loose weight, but they're not exactly cheap. AFAIK no-one makes a light 190mm hub yet so that holds you back a bit. You could just rebuild the stock rims/hubs with the lightest spokes/nipples you can find. Not sure if the stock freehub is steel or aluminum? The hubs are apparently made by Novatec so maybe you could swap the freehub for a lighter model if there's some compatibility? Or just wait for Tune or someone like that to come out with a 190mm hub before going crazy on the wheels. The e*thirteen crank is already one of the lighter options but if money was no object, you could save weight switching to RF NextSL.
Not so much a race bike but probably one of the most fun bike rides I have ever had. All the best with your build, let us know how the tubeless goes!
whydobearsxplod wrote:Looks like fun. You seem to have some brand loyalty.
This made me curious. I see Lamere has a 21.5 lbs fatbike. Anyone seen anything sub 20?
We just finished one up which we'll show shortly that was 18.9 without pedals.
weeracerweenie wrote:Stans are coming out with an actual kit soon I believe. I feel like a fat bike is in my immediate future. They are oh so cool to ride
I love riding this bike. it is my favorite mountain bike ever, and I've ridden a lot of great mountain bikes!
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