Sub-20lb 26" hardtail funbike help
I currently have a 33lb coiled Nomad that I use. It works well in the bike park, as well as 30-50mi XC rides, as I don't really mind taking my time on the climbs, as long as I can have a fun descent. I love smashing rocks and sending drops with it. Very fun bike and well worth the weight when I'm in that kind of a mood.
For a change of pace, I'd like to build a lightning fast weight-weenie 26" carbon hardtail just to have a big change of pace on more boring trails, or when riding with the girlfriend, and also to round out my biking skills.
I'm on a tight budget (of course), and I have a spare U-Turn Air Revelation 150mm and Crest wheelset that I have swapped onto my Nomad from time to time. I'm planning on shimming the Revelation down to 130mm and using the U-Turn feature to run it anywhere from 100mm-130mm depending on the intensity and style of the trail. Pretty sure I'll enjoy the slacker geometry at 130mm on longer descents, when I feel like playing with U-Turn. I'll also be running it 1x9 with a homemade 11-40 cassette, mating a 10spd Shadow+ derailleur with an SRAM X9 9-speed shifter.
What would you swap out to make it lighter without going silly on the budget?
Frame Ebay Carbon 1300
Headset Stock Alloy 120
Fork Revelation 150mm 20mm 1720 (have already)
Wheels Crest with DTSw 240 1455 (have already)
Tires Maxxis Ikon 1060
Brakes Avid Elixir CR 780
Derailuer Shimano XT Shadow+ 258
Shifter SRAM x9 125
Cranks+BB SRAM x7/x9 spiderless 600
Chainring Wolftooth 30T 50
Cassette SRAM 970 (modified) 380
Chain PC991 230
Seatpost Thompson Setback 180 (have already)
Saddle WTB Silverado 240
Grips KCNC Grips 15
Bars EC70 660mm 150
Stem EA90 90mm 120
Pedals XPEDO XMX24MC Flats 243
Obviously a different fork could save about 300g, and you can always go lighter on the tires and wheels, but I like to ride pretty fast and hard and already have those parts. So let's rules those both out for now.
I live in CO and love riding high country 30mi trails, so SS is not on the agenda.
Last edited by Lindahl; 08-14-2013 at 08:38 PM.
Saddle and grips. Both are cheap and both can give some decent weight savings. Also, If you are running 1x9 your chain might end up lighter than that depending on how many links you take out.
For using a Revelation and that frame 20lbs is pretty dang good. My old Stumpy had a 1300g frame and I used a Revelation and I was at 22lbs.
My 21" Ebay carbon 650b frame weighs 1150g. You're looking at a heavy frame. I built a very similar bike for similar uses but went rigid fork and Reverb post. 19lb for about $1700.
Keep the Country country.
It was the only 26" hardtail frame on ebay that had 1 1/8" steerer. Link to yours?
(I haven't bought yet - that's the quoted weight +/- 100g)
Just picked some of these up off ebay......cheap and light.....
XPEDO XMX24MC MAGNESIUM PLATFORM PEDALS
Sweet. That's an easy ~100g. I also noticed that the ODI grips are pretty heavy, and some cheap lightweight EVA foam grips come in at 16g, so that's another 100g. Also, I noticed I was calling out the X9 rear shifter at 240g, which is for the pair. So that's another 120+g.
Updated the original post and I'm coming in just under 20lbs. Not sure if there's much else I can do without an extra few $100, but at least the numbers are coming up about where I want them (the build will likely end up just above 20lbs due to misc random crap and off-spec components).
I'm not too familiar with brakes, but I'm wondering if that might be the next best place to save weight? Replacing the stock alloy headset probably, also. KCNC Rotors and Ti bolts could save another 60g+, but I've heard bad things about KCNC fading, and we have long descents out here.
Yes, all the frames are tapered headtube now, though crown races exist to run your fork with a 1.5" lower headset. That way you have future compatibility. I got the FR-502. It was quoted at 1150g and came in on the dot, surprising for the large frame size.
Originally Posted by Lindahl
Keep the Country country.
Did a reality check, even our tamer smooth trails are pretty rough in CO. A carbon hardtail just wasn't cutting it when I tested one out. Looks like it's gonna be an ASR5 or Blur TRc, or something along those lines at around 22-23lbs. 3lbs well spent, I guess. Maybe an ASRc though as well.
I have a 22.58lb TRc.... Your build will be very simar in weight....
Here's a picture before the new pedals.....
Last edited by lewke; 08-19-2013 at 10:35 AM.
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