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  1. #1
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    18 pound Spark 29 build

    Hello all!

    Notes:
    - In terms of frame I put the question on another thread so no point on using this again.

    In terms of components these are the ones I have in mind at the moment and all new options are very welcome and I will look at the possibilities of swapping them (or not).

    All links are to the manufacturers page of the product (when I found them).

    Component Brand / Model Hypothetical weight
    Valves American Classic 2x 3.6gr
    Rims AX - SRT 2x 325gr
    Hubs Extralite F / R 242gr
    Spokes Sapim ???
    Brake rotors Absolute Black iso Titanium 2x 49gr
    Suspension Lefty Carbon XLR 1330gr
    Brakes Formula R1 400gr
    Shifter XX1 trigger 120gr
    Pedals CB Eggbeater 11 180gr
    Chainring Absolute black 36T 52gr
    Chain XX1 chain 253gr
    Cassete XX1 264gr
    Stem Need frame measurement 1st N/A
    Seatpost AX - Lightness 85gr
    Seat unknown yet N/A
    Handlebar AX - Hera 75gr
    Frame Unknown yet N/A
    Crank Tune Black 340gr
    Tyre - Front Rocket Ron 2.1 N/A
    Tyre - Back Unknown yet N/A
    Headset
    Head cap
    Spacers
    Grips Extralite 16gr
    Seatpost clamp
    Bolts - misc
    Bottle cage
    Saddle
    Rear dérailleur XX1 240gr
    Axles
    Cables and housing
    TOTAL WEIGHT


    You are all welcome to make suggestions and fill in the gaps or even suggest parts I forgot to list.



    J
    Last edited by holyPT; 12-16-2013 at 01:49 PM. Reason: Grips

  2. #2
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    Wow! That is gonna be one killer ride. Thanks for the leads for me to drop weight too. I think I need the ax bars and those absolute rotors.

    Only thing I can see are your hefty grips really. Extralite 15g, Posh Nitrile foam/rubber grips are comfy 22g.

    You could 1x10. Acros thumb shifter 65g, Acros rear derailleur 159g, Their hydro lines are very lite too. KMC X10SL chain 243g, cassette like Nino 167.4g.

    That's 263.6g in savings and Acros is amazing.

  3. #3
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    I think the choice of Steam isn't important. Steam is pretty light no matter where it comes from.

  4. #4
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    @WickedLite, Thanks for the tips, will check them later when I get back from work and reply my thoughts and questions.

    @westin, it is the length! Some frames might require 80mm others 90 or 100 with negative angle. I'm not worried about the weight of the thing but I need it to be has rideable as possible

  5. #5
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    If you'll notice the spelling error in "steam" you'll see my tongue-in-cheek reference to the stem....

  6. #6
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    Quote Originally Posted by westin View Post
    If you'll notice the spelling error in "steam" you'll see my tongue-in-cheek reference to the stem....
    I failed there
    Hate you tho! haha making fun of the misfortunates typo!

  7. #7
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    @WickedLite, This bike will have to endure a lot, my current bike has 16000km (10000 miles) and it's in top shape.

    The parts that go away with heavy usage are the parts I can't really skip on the weight there.

  8. #8
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    Acros is an amazingly lite and like butter shift system. Aim for a more durable cassette though. I run XTR m980 cassette myself.

  9. #9
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    Update

    Just updating the list so far!

    18 pound Spark 29 build-specs.png

    Question. Does anyone know if Extralite headsets work on this frame?
    If so, which measurement should I get?

  10. #10
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    Scott 900 SL has Semi Integrated headset, OD 50/61mm, ID 44/55mm.

    You want:
    Extralite UltraTop 44: 14.7g (44mm)

    Extralite UltraBottom 55 (Tapered forks): 31.6g= 46.3g

    ExtraBolt 16 (adaptor for 1 1/8 steertube if you need ) 5.9g = 52.2g

    It's a sweet headset. Use this setup on my Scale 900rc and my Borealis.

  11. #11
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    Thanks a lot Wicked!
    That should finish the build. It was kinda the last missing piece!

    I could get the bike lighter overall but I want to ride it like the other I have so I think the <8kg won't happen unless some extra mods come into play but I'm not too keen on that.

    If it stays below 8.2kg it will be a win!

    The adaptor should be for 1 1/5 to 1 1/8 which is not the case so everything should be ok!

    Just one thing, the ultra top part has no issues with a lefty fork right?


    J

  12. #12
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    Coolio,

    I use a double crown per say with my Look Fournales without issue. I can't say about Lefty's compatibility. Never used one.

    Extralite does not recommend UltraTop for double crown forks but does have the UltraTop HD version which is 25.4g
    HD (Heady Duty) Versions features 2 stainless bidirectional bearing cartridges that can handle double crown forks and manage Freeride abuses.
    Stainless and fully serviceable.

    WebShop

    NIIICE.... 18lbs is frickin lite! Should be a climbing xc rocket..

  13. #13
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    How come you've opted for the Tune Black Foot crank? It's still quite new and not much is known about it really. Personally I'd go for something tried and tested like THM Claivcula M3 or Hollowgrams. SISL2 cranks are 363g with XX1 ring and in a month or two AbsoluteBlack will also be selling Hollowgram direct-mount rings, making them definitely lighter than the Blackfoot. Furthermore Mattias Hellore (Experimental Protoype) was experimenting with a carbon axle for the Hollowgrams, cut the weight in half I think, but I don't know how durable it has proved nor the cost of it.

    You might as well go for the Tune Cannonball SL Lefty hub, even lighter.

    You could also replace the cage on the XX1 dérailleur with a carbon one, they're easily found on ebay and are relatively cheap.

    I know this is the wrong thread... but Cannondale Scalpel is 20 grams lighter than the Spark I think and the FRM Anakin is also 1900g.

    Should be a sweet build!

  14. #14
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    Just realised the 363g Hollowgram weight didn't include axle, my bad. Should be around there with the direct-mount ring and definitely with the carbon axle.

  15. #15
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    Hey Rob!
    1st of all thanks for the pointers you gave me!
    Now let me try to answer your questions:

    - Tune Blackfoot because exclusivity and it's light
    - Clavicula M3 is supposed to be heavier
    - Clavicula DP sucks ass (According to 2 people that USED them that I know of and went back to SISL2)
    - A complete SISL2 with XX1 ring is around 534gr
    - I don't want many (if any) custom carbon parts.

    That is the hub I want. I just messed up by the lack of description. Sorry for that and thanks for pointing it out!

    I'm trying to start doing some 4-5 day rides where I know I will hit a lot of unknown crap along the way.

    I wanted a Cannondale Black Inc as a first choice but couldn't find the frame alone
    Then I tried to get an SWorks WC but they didn't sold it without the suspension so it was another no go.
    Also talked with trek and they told me to FO cause they don't sell their frames without all the crap they put on it.
    Also thought about the Rocky Mountain and Jet9 but they are heavier and also because RM dealer was a retard so I said fuk him too.
    The FRM is one ugly bike! (my opinion matters on this)

    So let me tell you what I want from the bike.
    NOT A RACE BIKE!
    The bike I currently own is a Scale 899 (6.9kg original without pedals and with tubeless conversion in case anyone wanna know) from 2011. I use it as my daily commuter and do whatever I can with it (rain snow mud sun).
    I'm not the type of guy that has a Ferrari to not put miles on it...So I need some reliability.
    On this build the only "unreliable" part is the crank because of the "unknown" factor and because it's expensive!
    I'm not even going to invest in lighter cables / housings and all that.

    All this said, I will try to look again into the SISL2 with even more attention now.

    Hope it's more than sweet!
    Once I get this going I will undoubtedly post pictures!

    Thanks for your input.
    If you want to discuss anything further go right ahead. I love discussing this stuff!

    J

  16. #16
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    Thanks for this post!
    I was wondering the same things lately.

  17. #17
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    Quote Originally Posted by Trail_Blazer View Post
    Thanks for this post!
    I was wondering the same things lately.
    What are you planning to build Trail?

    Quote Originally Posted by WickedLite View Post
    Coolio,

    I use a double crown per say with my Look Fournales without issue. I can't say about Lefty's compatibility. Never used one.

    Extralite does not recommend UltraTop for double crown forks but does have the UltraTop HD version which is 25.4g
    HD (Heady Duty) Versions features 2 stainless bidirectional bearing cartridges that can handle double crown forks and manage Freeride abuses.
    Stainless and fully serviceable.

    WebShop

    NIIICE.... 18lbs is frickin lite! Should be a climbing xc rocket..
    Made my mind and I'm going with the Extralite HD version.
    Thanks for your help man!

  18. #18
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    Does the 1920gm for the Spark frame include the rear shock? If yes, which one? Do you plan to use the twinloc system? What's your source of the 1920gm weight?

    I'm curious because that frame is on my short list for my next build.

  19. #19
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    I'm seriously considering the Tallboy Carbon (Not LTc).
    2200 gram frame (including rear shock).
    It can be found pretty affordable too.

  20. #20
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    Quote Originally Posted by BDozer View Post
    Does the 1920gm for the Spark frame include the rear shock? If yes, which one? Do you plan to use the twinloc system? What's your source of the 1920gm weight?

    I'm curious because that frame is on my short list for my next build.
    2013 Size M with a crappy dt-swiss...
    18 pound Spark 29 build-scott-spark-900-pr-2013_b9.jpg

    I put a "GREEN" weight on it. If you read it its a "near by" weight that I'm hoping to achieve.
    Overall I hope my bike to be below 8.5kg which is very doable.

    You can also look at Rocky Mountain Element 999 RSL is 2000 or 2020 for size M.

    Quote Originally Posted by Trail_Blazer View Post
    I'm seriously considering the Tallboy Carbon (Not LTc).
    2200 gram frame (including rear shock).
    It can be found pretty affordable too.
    Hope it gets a sweet build!

  21. #21
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    I would like to build a bike just like yours, however with a less costly frame. Are you going to use the twinloc ?

  22. #22
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    Quote Originally Posted by charlesrg View Post
    I would like to build a bike just like yours, however with a less costly frame. Are you going to use the twinloc ?
    I will probably try to find a way to make it smaller and/or more effective!
    I think the current twinlock is useless when you only want a shock one.
    Will have to look into it.

    I bet you would also do a great build Charles. If you ever do it drop me a msg so we can chat!
    I'm starting to purchase the parts this month and I'll keep you guys informed of the status of the bike. A friend offered his services to build it, he's the guy that made me WW freak haha, so he deserves to build it.

  23. #23
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    Just saw a spark carbon on e-bay with all upgrades for a great price. you might be interested.
    I asked the guy why is he selling, it seems to be the perfect bike: 2013 Scott Spark 900 RC SRAM XX1 Build Fox ctd Shock Trek SL Superfly Scalpel | eBay

  24. #24
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    Quote Originally Posted by charlesrg View Post
    Just saw a spark carbon on e-bay with all upgrades for a great price. you might be interested.
    I asked the guy why is he selling, it seems to be the perfect bike: 2013 Scott Spark 900 RC SRAM XX1 Build Fox ctd Shock Trek SL Superfly Scalpel | eBay
    Thanks for the heads up Charles but I live in Europe. Also I prefer to buy new for this build. If I was you I would get it tho. Seems the guy already changed the crappy dt for a fox!

    The total retail for that bike is not 8k like he says, more around 5-6k but still quite a bargain I must say!

    Cheers,
    J

  25. #25
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    It's not my size or my wife's size. If it was I would bid, no questions to ask.

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