Chinertown
Chinese Carbon MTB => 29er => Topic started by: helio on September 02, 2015, 06:53:12 PM
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Hi
My name is Hélio, living in Lisbon, Portugal. Ive rediscovered mtbiking lately. Started with a 2015 scott aspect 950, and soon started to upgrade here and there to save some weight, managed to bring from 14,5 to 12,5 kg, but then i realized, I've got a almost new bike.
here starts my built. Ive ordered a CS-041 frame from Peter. He promptly answered (don't know if he lives in europe, or if he doesnt sleeps), everything worked fine. Im just waiting for the frame to arrive.
Meanwhile I've got myself:
Fsa k-force lite 2x10 crankset
xtr rd
xt fd
xtr brake set
egg beater pedals
xt shifters
xtr 11-38 cassete
from the previous built, will use:
bor 333 wheel set
novatec 271 hubs
lark lightweight rotor disks
Saevid 84gr carbon saddle
richtey 260 90mm -25º stem
kcnc 720mm kc bone handle bar
rock shock reba 2015
still to buy:
kcnc ti pro lite 27,2 saddle post
bb30 to bb92 bottom bracket (I've ordered a bb92 from fsa, but k-force 30mm spindle doesn't fit the 24mm inner diameter)
swalbe racing ralf tyre set
looking to achieve a 7,5 - 8 kg built. Ill use it pretty much everywhere, therefore im not going 1x10 or 1x11, because i like to climb everywhere, and I've lived in a island where to ride 30km, the accumulated climb would be 1000m.
ill had some pics in the next days, as soon as the frame arrives.
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Looking forward to the pics! How do you like that saddle? I still haven't found one I really like. Tried one of the web saddles, but it broke on the first ride (I'm ~90 kg).
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im very happy with my saddle, was not cheap, but is though. Maybe a little too much. I weight 75kg, and it have never had a issue with it. You can search reviews on web.
my pics are huge, i have to upload it later
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(http://s23.postimg.org/e4mwoe4zr/image.jpg) (http://postimg.org/image/e4mwoe4zr/)
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(http://s23.postimg.org/ued2rafnr/image.jpg) (http://postimg.org/image/ued2rafnr/)
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the bike is finally assembled and tested. I really like the bike. every pedal stroke really propels the bike forward. very stiff pedal wise, but flexible enough to soften some rough terrain, as expected in a carbon frame. The build is around xt an xtr components, Next SL crankset 2x10, and a xtr rear train, cassete and rd.
the low on all this is the weight. I know im using my old tires, around 800gr each, but even with out this, the weight is pretty high, sitting around 10kg right now.
I was hopping to reach a 8kg bike build with 2x10 crankset (as i run some marathons, i need more than 1x11... at least till now).
Next week i should be changing to schwalbe thunder burt tires, tubeless mount.
I can see that in order to lower the weight ill have to spent some real serious money, in some periferics, and a 1x crankset.
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Very nice build. Thank you for sharing.
I'm really liking all of these CS-041's popping up on the forum. It looks like a great frameset.
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Which bottom bracket did you finally order ? The one coming with Next SL I suppose ?
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at the end it ended with a shimano bb92.
unlike the fsa (spindle too short) the race face don't come with a bb.
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the bike now mounts a pair of schwalbe thunder burt 29x2.1, tl ready, 400gr each, making the final weight 9,2 kg. yet, a bit heavy for what i wanted.
im thinking about some way to shed some weight, im thinking about a new suspension fork sid xx sc (-100gr), Ti pedal spindles (-100gr) , changing to a 1x system (-500gr). But as it could be very expensive, it ll take its time.
By now im breaking some KOM and PRs.
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the bike now mounts a pair of schwalbe thunder burt 29x2.1, tl ready, 400gr each, making the final weight 9,2 kg. yet, a bit heavy for what i wanted.
im thinking about some way to shed some weight, im thinking about a new suspension fork sid xx sc (-100gr), Ti pedal spindles (-100gr) , changing to a 1x system (-500gr). But as it could be very expensive, it ll take its time.
By now im breaking some KOM and PRs.
Going 1x will save quite a bit of weight. A new fork is a big investment for only 100g. I'd check into the RaceFace Next SL Cinch cranks first, they might still save decent weight over the older 2x model.
For a smaller investment, Ashima AiRotors are really nice, surprisingly light, and very affordable. They're available under many different names, such as the Origin 8 Torq-Lite rotor (http://www.jensonusa.com/ORIGIN8-Torq-Lite-Disc-Rotor).
Those quick release skewers you have are not light - swap those out for some non-quick release ones and you can save a decent amount of weight. I've got a set of Control Tech Race SL skewers (http://www.bikebling.com/Control-Tech-Race-SL-MTB-Skewers-p/controltech-racesl-skewers.htm) that are amazing, the pair is lighter than just about any titanium quick release skewer.
Looks like you've already got foam grips, only way to drop weight past that is wrap the bars with a bit of road bar tape. That's getting silly, though.
Speaking of silly, if you're a reasonably lightweight rider, you don't need all six rotor bolts. My wife's been running only three titanium bolts front and rear for several years now. That's truly chasing grams, but if you want to hit 8kg with a 29er with front suspension, that's what you're going to have to do.
Shimano brakes are not the lightest, but they're good enough that they might be worth bending your weight target for. :D
The EggBeater 11 pedals are freakin' sweet. I don't run them - too heavy - but my wife's been running them for a while. The retail price is a bit ridiculous, but if you look on their page, they have a pedal trade-in program. You send in some old pedals (doesn't matter which) and can get brand new Crank Brothers pedals for a whole bunch less. Prices have gone up since I got her the eggbeater 11s, but it was a WHOLE bunch less than the $450USD retail they were going for at the time.
If you wanna get silly, you can find all-aluminum "race day" cassettes at shops like fairwheelbikes.com and others. Almost guaranteed they won't shift as well as an XTR cassette.
Finally, if you're staying 2x10, the non-Shadow+ XTR derailleur is marginally lighter, but wouldn't work very well in a 1x setup.
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Hi mate, thank you for the reply, and the suggestions.
Presently im getting to know the bike better. It already suits me very well. Im happy with it. Anyway i would love to have it lighter. The fork option is something that im hopping to achieve at less cost, as i have a refund pending form CRC.com and i can still make good money on the reba sale.
Changing to 1x, has made most of my thought. Ive reached the conclusion that in order to use 1x, i need a wider transmission rate out back. This way im looking for feedback in 42 teeth cogs vs shimano xtr 11sp 9000. I don't want do walk instead of pedal on "wall"climbs, and i don't want my top speed to be limited to 28/30 km/h. Therefore im thinking about it.
Ill check about the rotors and the skewers.
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What about titanium spindles for your current pedals? There are sellers on eBay and elsewhere that make titanium spindles for a variety of pedal types/brands for $60-100, which is generally cheaper than upgrading the whole pedal assembly.
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That's what I was talking about ;)
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Can your rear hub take a XD driver? If it can...you can run a 10-42 SRAM 11sp cassette. A 30T chainring with the 10T cog will take you to ~41kph @ 100rpm and 49.5kph @ 120rpm.
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my rear hub doesn't take sram cassettes.
In order to go 11sp, i need a shimano cassete, and a new rear mech, since the rear mech ratio isn't made for the 11p separation between cogs, and will misshift. this means a complete 11sp system. It was my fault, i went 2x10 because i feared the gear ratio was not wide enough for me, but it actually is, what leaves me with a very good, brand new, 2x10 system. is there any buyer? LOL
with the ti spindles, new ti axles, and ashima rotor, i can save around 200gr, taking it to 9kg, and with a 11sp i can save some extra 500gr. 8,5 is a world cup bike... even maintaining Ritchey wcs 120gr stem and a 170gr 710mm handlebar, and a reba... not going to mcfk, ultralite, and tune $tuff.
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From what I've been reading is that the 10sp derailleur will work with a 11sp shifter and cassette. The 40/42T cog is what the Shimano 10sp derailleur does not play well with. Shimano 10sp RD's do not like being adjusted for anything above the 36T it was designed for. There are workarounds like the OneUp RAD cage to get the 10sp RD to work with the 42T. With the added cost of the RAD cage...I think you're better off just getting the 11sp derailleur.
Be cautious with Ti pedal spindles. Most have weight limits. If you're above 86kg...keep that in mind.
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From what I've been reading is that the 10sp derailleur will work with a 11sp shifter and cassette. The 40/42T cog is what the Shimano 10sp derailleur does not play well with. Shimano 10sp RD's do not like being adjusted for anything above the 36T it was designed for. There are workarounds like the OneUp RAD cage to get the 10sp RD to work with the 42T. With the added cost of the RAD cage...I think you're better off just getting the 11sp derailleur.
Be cautious with Ti pedal spindles. Most have weight limits. If you're above 86kg...keep that in mind.
thank you for your reply. For the time being, ill just use 2x10 until it worns out. Then ill change to 1x11. Regarding weight, im 75kg, no way i can make it to 86kg... and if i make it, i won't be capable of riding hard, as ill be fat.
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(http://s2.postimg.org/cace1w9mt/image.jpg) (http://postimg.org/image/cace1w9mt/)
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I've just bought a helix seat post to cut and fit to my 29er. The seller says it weights 152gr in 400mm length, but im planning cutting it to somewhere between 250-300mm. Since the isp weights around 30gr (kcnc parts) the post should be around 120gr, and im cutting maybe some 50gr of it out.
100gr seat post looks nice for 60€.
Im also thinking about hanging my 100mm stem for a same model 80mm, sometimes i feel a bit uncomfortable with my ridding position, a bit too stretched, which give me numb hand in long rides. Im only afraid of losing my very good climbing geometry (tested it last weekend on 20º+++ climbs offroad, and im very satisfied with it.
Since the bolts on the stem are steel, ill change it by some ti bolts (12gr savings). talking about ti, the crank brothers eggbeater ti spindles will also be ordered shortly, as they are starting to need some service.
Ive been looking for ashima rotors, and they are a bargain, but my ice tech are barely used. ill think about that for my next race.
the 8.5kg (2x10) bike is becoming a reality.
cheers guys!
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updates:
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(http://s23.postimg.org/4snhhtv97/image.jpg)
Does anyone know where can i find a threaded rear mech hanger, that will fit this frame? Peter don't have any.
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What seat and seat post clamp are those? Where did you buy them?
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The post says "Hylix". You can find them all day long on eBay, same with the clamp. The reviews on the post have been hit or miss.
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seat post is Hylix from eBay around 50€, trimed to 300mm (120gr), seat clamp carbonice from r2 around 35€ (5gr.)
ill test the seat post tomorrow, let hope for the better, it flexes a lot though
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The seat post appears to be the same one I bought from Peter and that several of the carbon vendors sell. The only difference is that mine is UD finish and black anodized metal, not red with 3K finish. The designs look identical.
The clamp is super trick and I might get one purely for the bling factor. It's time to start lightening my ride up a bit to get it down to 19lbs (currently at ~20.4 or so).
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seat post is Hylix from eBay around 50€, trimed to 300mm (120gr), seat clamp carbonice from r2 around 35€ (5gr.)
ill test the seat post tomorrow, let hope for the better, it flexes a lot though
The weight/price is really tempting. How does it ride with the 041?
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Hi, i'm from Portugal too, i got a 256SL. How has your experience with customs?