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Discussion Starter · #1 · (Edited)
I just finished a fat bike build. Its pretty much exactly what I want, but I was hoping for a 33lb build. Right now its 34.8.

Here is a list of whats on it. If I can drop about 2 pounds for not too much $$$ that would be rad. If its gonna cost a ton, then I am good at 34.8.

Wheels:

Front Hub 375.2 DMR Revolver
Rear Hub 551.4 Deore (widened)
Front Rim 775.3 100mm Drilled
Rear Rim 793.7 100mm Drilled
Front Tire 1253.1 Vee8 120tpi
Rear Tire 1370.2 Vee8 120tpi
Front Tube 217 Forte
Rear Tube 218 Forte
Front Spokes 262 stock
Rear Spokes 263.8 stock

Drive Train

Rear Derailer 283.1 Deore 9 speed
Rear Shifter 147.7 Deore 9 speed
Cassette 369.6 XT 9 speed, drilled
Chain 268 9 speed
Cranks 550.5 LX with drilled Salsa Ring

Brakes

Brake Front 341.1 Hayes hydro caliper to lever
Brake Rear 380 Hayes hydro caliper to lever
Rotor Front 206 Hayes 203mm
Rotor Rear 205.8 Hayes 203mm
Brake bolts 37.5

Other

Grips 65.6
Handlebars 218.1 Forte
Stem 194.8 FSA
Seatpost 235.4 FSA Superlight
Seat 283.7 SDG
Seatpost Clamp 33.4 Stock
Pedals 276.6 Crank Bros Candy

Headset 174 FSA Orbit
Bottom Bracket 427.2 stock 110mm shell
Fork 1099.4 Salsa Enabler

Is there anything thats WAAAY heavy here? I don't see anything too glaring, but maybe I'm missing something.
 

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Setting it up tubeless will save you a little bit of rolling weight. Obviously a narrow rim will save a bunch of weight but it seems you want big float but you are running about a 4.0 tire. A carbon fork can save you a couple hundred grams at about $300. My titanium fatbike is 26 pounds but I run marge lite wheels with a combination of carbon parts throughout the build.
 

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How strong are the carbon forks? Im about 235lbs with my riding gear on, and I love wheelie drops... One of my biggest fears is having a fork break off...

Any suggestions?
http://forums.mtbr.com/families-riding-kids/light-weight-stem-796131.html
That might work for a stem. Not sure length you want. There are lots of lightweight inexpensive stems out there.

Saddle is difficult to pic something out for someone. You need something that fits. But its pretty easy to get a ~200g saddle that is comfortable. I have selle italia slr flow carbonio(yeah, long name) that is 120g and super comfortable for me for up to 30mi.
 

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I have tested the Carver carbon fork and the LaMere carbon fork and both are very strong. I have ridden with them on very rocky technical terrain with big drops and have had no issues with either. I do like the looks of the LaMere fork better plus it can come with a tapered steer tube.
 

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Discussion Starter · #8 ·
Looks like for $330 I could save about 630 grams. That not too bad!

It would get to about 33.4 pounds. I bet the other .4 could be had in a Seat and maybe some different brakes.

So I guess about $500 to get the weight down to where I want it...
 

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Is this bike the one you built using the Beast frame? If so, you could easily lose 3.5 - 4 lbs if you made a new frame with lightweight chromo tubing from scratch. It would cost close to $100 for frame parts.
 
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