KCNC do cassettes with alu sprockets, various other manufacturers do them too, they don't wear well, but no one's done a 36t sprocket before. They also tend to snap, but where the sprocket joins the carrier, the fact they've done away with the carrier makes me think it's alu.
I guess it'll depend on the surfacinging as well, that can make a huge difference. This isn't pushbikes, but renthal make a hard anodised allymotorbike sprocket which lasts a little more than twice as long as most ally sprockets, and about 2/3 as long as steel if looked after. I assume something similiar could be used for mtbs, if it isn't already.
I would love 36t on my bike, thats why I am interested, OK am convinced on the ally thing, 1x10, yeah sounds right to me, and not an overlapping gear in sight. Where do I sign up?
oh and need to see the shifter pods on their own, if you got a pic of that in your pocket!! 🙂
Cranks are available in either Pressfit 30 or GXP, with a Q factor of 165mm
So the Pressfit/BB30 and GXP options both have a Q-factor of 165 mm? One of the advantages of BB30 is supposed to be reduced Q-factor.
Your right northwind, I think clubber has got that sussed its the ammount of teeth MX sprockets are huge... I am now convinced, ally no trouble.. bring it on..
This is no different to 8 to 9 (or 7 to 8 or 6 to 7 or 5 to 6) - there are always (still...) people who say it'll be a disaster and never work and the reality never actually reflects that.
My commuter with 7-speed gets used every day, never cleaned, left outside in the rain, and I typically get 3 years' use out of a drivetrain before I have to change everything. Plus it's a lot less sensitive to poor set-up and filthy cables than 9 speed gearing. And that's built up with stuff that's below even the level of Deore!
It's not a disaster that there's fancier stuff coming out, but each change gives pretty minimal performance benefits at the expense of reliability and longevity.
bb30 is lighter as bearing go straigh into the frame...ie.no need for bb cups.
The q factor is suspect givern is for the bb30 anyway.
Shimano make a 12-36 cassette I think Madison have them on teh website, only deore level though.
With a White Induistries VBC chainset you could have it all now 9speed....
Yes they've just started doing a 29er specific cassette with the 36 you're right.
I wondered if the chainset weight was for BB30, in which case it's not that impressive.
great, was just about to buy a new cassette... OK then poke your 10 speed... until I can afford it at least!!!
BB30 chainsets seem to be coming out a bit heavier but apparently a lot stiffer...
My S-Works one is 530g (plus bearings admittedly).
Not read all the comments yet but here's a couple of close ups of the cassette
http://www.singletrackworld.com/2009/05/that-sram-xx-cassette-in-close-up/
Front shifting is nothing like Duo, you can change when you want, under pressure up and down no problem. The rings are mathematically designed to have more pick up and release points than standard rings.
Interesting to note that it seems to be using the powerdome type fitting with splines only at the top and bottom - not good for alloy freehubs...
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http://www.singletrackworld.com/2009/05/sram-xx-forks/
Fork story will be all there when I've popped over to the truck to take pictures.
Doesn't actually seem to be that much of a problem with Red cassettes, I wonder if it's alright because it's 2 wider splines, as opposed to 4 thin ones, distributes the pressure more evenly.
Yeah, could be I suppose - twice as wide halves the load which is quite possibly enough to make all the difference.
Nice option but wonder how much it will cost?
(-fed up of spending more money on bike than a car!)
Someone muttered at £260 for a cassette I think it was. Seems about right, based on Red.
Yeah, but no one serious will be buying that - it'll be for sponsored riders and people with more cash than sense. The rest of us will be waiting for the X9 or X7 versions or using 10 speed Shimano.
SRAM Red OG-1090 cassettes seem to be available from £120 - £145 online.
Cross-compatibility with SRAM road groups will be nice. Could use XX front derailleur plus chainset or rear derailleur plus cassette to put low gears on a road bike.
Standard Q is 156 compared to Noir which is 171 that's with a GXP b/b. The wider Q is to fit different frame designs.
But the real question is, out of all the staff the mag could have sent to preview the latest top-end race groupset, why the one who rides a singlespeed and sings the praises of cheapness?
Surely the obvious choice if you want the non-fanboy opinion 😛
(I do own and ride geared bikes you know)
Images of the XX trigger shifter here;
http://www.singletrackworld.com/2009/05/sram-xx-shifter-close-up/
Is the cable pull of XX compatible with teh road groups then, that could allow all sorts of fun options?
It's only SRAM - not like anyone'll buy the stuff. When Shimano do a 10 speed off road set up, then I guess we'll have to consider the pros and cons.
but the question remains will be mech snap at the sight of a twig, i guess there won't be much change from £250??
more interested in what can be done with the new FSA chainset and shimano mechs.
jeez not even launched and the NIMBY's are out in force.. or seeing Red, looking for a rival....
36T sprocket = aluminium.
Since its seldom used, and made of a nice hard 7075 Al it will last well.
2x10
don;t knock it till you try it. I had 2x9 for many years and been running 2x10 fir a while. brilliant! bring it on.
For Racers only..?
Put the NIMBY mindset away for a while and think about this clearly.
3x9 gives you 13 usable ratios, 2x10 gives you 14... nuff said.
XX uses Road 10speed cable pull ratio therefore it isNOT compatible with X.0, X.9 or X.7
It will work with road Double tap flat bar shifters,...apparently,...so I'm told.
Brakes are strng enough to kill you with a 180mm rotor.
I think I'll stick with my hub gearing.
I'd certainly give it a go when it trickles down to xt level. Perhaps it's the latent roadie in me?
http://www.singletrackworld.com/2009/05/sram-xx-%E2%80%93-the-low-down/
Bit more info here.
Any more questions for me to ask the designers? I'll be chatting to them at lunchtime.....
Any more questions for me to ask the designers?
Ask them if they get hacked off with inane questions or statements like "It will snap off in the first crash" or "That will dig holes in an alloy freehub"?
or if they get hacked off with grumpy bike designers 😛 You miserable git, Brant 😉
