Building my first 29er race bike

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rainerhq
Posts: 621
Joined: Wed Dec 15, 2010 10:32 am
Location: Estonia

by rainerhq

Hi
I sold my 26er by parts and now starting to build my first 29er.
I do not even know if I´m allowed to start this topic here, because the frame itself weights 1433g.
It´s ca 300g heavier than most brand frames. But complete bike should be sub 9,5kg.
Frame could have been lighter, but I wanted custom paintob and this added ca 150g.
Some parts, like brakes, crankset, grips and rotor come from my old bike.
This bike will be used mainly on XC marathons.
Here is buildlist, which is not final and all suggestions and critics are welcome

Frameset
Frame: Open mold 056, size M 1433g (weighted)
Fork: Rock Shox SID RCT3, taper 1530g

Frame misc.
Headtube bearings + cover: Neco 78g
Expander: Carbon Ti X-plug 14g
Bolt: Ti 5g
Top Cap: Scott 8g
Spacers: carbon 3g
Seat clamp: J & L w Ti bolt 9g
Bottlecage Bolts: Al 5g
Chainstay guard: transp. film 1g

Cockpit
Stem: Easton 17° 148g
Bars: New Ultimate EVO 700mm 116g
Grips: ESI Chunky 57g
Barplugs: ESI 6g
Seatpost: Climax SP02 31,6x350mm 135g
Saddle: Specialized Phenom Expert 252g

Gear&Brake
Shifter: SRAM XX1 triger 95g
Adapter: Problem Solvers MisMatch 17g
Crankset: Shimano XTR FC-M985 505g
Chainring: Wolf Comp 34T 61g
Chainring Bolts/washers: XTR 9g
Bottom Bracket: Shimano XTR SM-BB93 67g
Rear Der.: SRAM XX1 242g
Brakes: Shimano XTR BR-M985 425g
Caliper bolts: Ti 13g
Rotor front: Shimano XT IceTech 160 116g
Rotor rear: Ashima Ai2 160 68g
Rotor bolts: Ti 6pcs 8g
Chain: Ultegra 6800 254g
Cassette: SRAM X01 262g
Cable/housing: Alligator I-link 30g

Wheels
Rims: LB wide carbon rims 784g
Front hub: Novatec 711 142g
Rear hub: Novatec 712 275g
XX1 freehub body adds 53g
Spokes: Sapim Laser 305g
Nipples: Al 21g
Rim Strip: Stans yellow tape 15g
Front tyre: Schwalbe Thunder Burt 29*2.10 466g
Rear tyre: Specialized Renegade 29*1,95 530g
Tubes: Stans milk 240g
Valves: Fun Works 8g
Front skewer: DT Swiss RWS 47g
Rear skewer: Iron Works bolt-on 36g

Misc.
Pedals: Exustar E-PM215 284g
Bottle Cages: Ebay CF (1 regular + 1 side access) 40g
Computer: Garmin Edge 500 w mount 63g

TOTAL: 9281g (20,46lbs)
Attachments
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Last edited by rainerhq on Mon Jan 27, 2014 8:13 pm, edited 23 times in total.
"Nothing compares to the simple pleasure of a bike ride"
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devinci
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by devinci

nice!

few things

- I would consider different components: esi grips, lighter stem and handlebar (KCNC arrow stem and MT zoom bar) and maybe a ligther saddle.
- I would not use that chainstay guard. Just wrap some old road bar tape, lighter!

Looking for your build!

by Weenie


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rainerhq
Posts: 621
Joined: Wed Dec 15, 2010 10:32 am
Location: Estonia

by rainerhq

Thanks for your input!

- ESI is good idea.
- First I´m going to buy cheaper 17 degree stem, to be sure I can get good riding position and if it suits then why not KCNC.
- I like the look of 3T Exsero. Weight and price is also competitive.
- I have this saddle, thats why I listed it, but I´m also considering full carbon from ebay (Touple).
- Like your idea of old bar tape. Scott guard do not fit very well will this frame chainstay bend.

Pic of frame:
Image
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dwaharvey
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by dwaharvey

What length stem are we talking about? I had a KCNC arrow stem in -17 and it weighed 145g in 110mm length (ie not any less than the one the OP is considering).

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rainerhq
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by rainerhq

80mm
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devinci
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by devinci

I think syntace would be lighter but I like my arrow ;)

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painless
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by painless

devinci wrote:nice!

few things

- I would consider different components: esi grips, lighter stem and handlebar (KCNC arrow stem and MT zoom bar) and maybe a ligther saddle.
- I would not use that chainstay guard. Just wrap some old road bar tape, lighter!

Looking for your build!

yeh, buy light KCNC stem, shave 20 g and get a sausage instead of stem. also tundra is very good decision for long marathon rides. a light saddle with discussable comfort could be a sliver in your ass in long marathons. saved 50 g on saddle won't console you after 50-60km when there are left 20-30 km or even more. we are amateurs and the first thing in riding is pleasure.

despite this I don't understand the choice of the expander instead of good old nut in the non-carbon steerer. I saw lot of riders who are bogging their mind to tight the stem and steerer properly on their mtb bike.

after all I like this project because there are some things where performance in some crucial moments is not sacrificed for weight.
With style, petite, with style...

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devinci
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by devinci

but this is weight-weenie, hence the light stuff comment. Try a KCNC stem for yourself before judging. I have had several, never noticed ''flex''. Flex is overrated.

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rainerhq
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Location: Estonia

by rainerhq

painless wrote:despite this I don't understand the choice of the expander instead of good old nut in the non-carbon steerer. I saw lot of riders who are bogging their mind to tight the stem and steerer properly on their mtb bike.
after all I like this project because there are some things where performance in some crucial moments is not sacrificed for weight.

Thanks for your comments.
If the Tune expander is useless, I won´t buy it. Another options are Carbon Ti X-Plug or good old nut.
"Nothing compares to the simple pleasure of a bike ride"
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tonytourist
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by tonytourist

A good option for the stem would be a Zipp Service Course SL in -17, not sure if it is available in 80mm though. Sounds like you'll have a nice build!

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painless
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by painless

devinci wrote:but this is weight-weenie, hence the light stuff comment. Try a KCNC stem for yourself before judging. I have had several, never noticed ''flex''. Flex is overrated.

yes, I've tried: KCNC stem, flat bar, X-7 brakes and other small stuff. cheap and light stuff usually doesn't have good stiffness, durability and performance. such eastern manufacturers as KCNC, Aerozine or others are the examples.
With style, petite, with style...

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rainerhq
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Location: Estonia

by rainerhq

Got fork and chainring today and they both look awesome.
SID RCT3, 1540g with cut steerer.
Image

Wolf 34T, 61g. It came with washers, so I can use my existing Shimano bolts and these are great.
Image
Image

I have also edited my first post.
"Nothing compares to the simple pleasure of a bike ride"
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rainerhq
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by rainerhq

Recived couple a more components. Those bars are a piece of art :)
Image
"Nothing compares to the simple pleasure of a bike ride"
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Rich_W
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by Rich_W

I tried those Ashima Ai2 rotors for one ride - the performance was awful, not to mention the hand fatigue.

by Weenie


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rainerhq
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Joined: Wed Dec 15, 2010 10:32 am
Location: Estonia

by rainerhq

I bought only 1 rotor for rear and if it fails, I have Shimano rotor for replacement.
"Nothing compares to the simple pleasure of a bike ride"
Jamis Renegade Expert
Spark 900 RC

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