shimano 29er chains...
 

  You don't need to be an 'investor' to invest in Singletrack: 6 days left: 95% of target - Find out more

[Closed] shimano 29er chainsets

14 Posts
12 Users
0 Reactions
70 Views
Posts: 1014
Free Member
Topic starter
 

http://www.chainreactionhub.com/latest-news/1283-first-look-shimano-chainsets-for-big-wheel-mountain-bikes

yess.

new BCD. 😥


 
Posted : 04/03/2014 11:07 am
Posts: 17
Free Member
 

I wondered how all those people had struggled on without special 29r chainsets until now. Thankfully they will all be saved.


 
Posted : 04/03/2014 11:09 am
Posts: 41642
Free Member
 

new BCD.

Nope, just aligning with XX1.

Surprised they're still flogging the dead horse that is the tripple.


 
Posted : 04/03/2014 11:30 am
Posts: 24332
Full Member
 

Are they launched on 1/4/14?


 
Posted : 04/03/2014 11:30 am
Posts: 0
Free Member
 

Why no 29er specific shifters? That's what I really need.


 
Posted : 04/03/2014 11:34 am
Posts: 14595
Free Member
 

a 32T middle ring is too hard to push and the 24T small ring is not low enough for some climbs.

Are they having a giraffe?

Just for balance mikewsmith, it also for those poor soles riding [i]"27.5” and 29” wheels."[/i]


 
Posted : 04/03/2014 11:38 am
Posts: 17
Free Member
 

[img] [/img]


 
Posted : 04/03/2014 11:41 am
Posts: 0
Free Member
 

Gear ratio's and bigger wheels has been something Ive raised before. IME, as for the 650b wheel size, the 10sp 11-36 cassette works fine with the 24t granny ring and 34t middle.

I can see merit for introducing a lower set of ratio's for a 29r, bigger circumference and all that shizzle, for those who are not as fit or strong as others. Good to put as OE on the 'cheaper' models within a range perhaps?

I can see the reason it may not fare too well aftermarket, is for the current fashion/trend towards 1x. Bit like stupidly narrow bars and 150mm stems were de-rigeur BITD. Funny how that one died a death 🙂


 
Posted : 04/03/2014 11:59 am
Posts: 10485
Free Member
 

Balls, I'm going to have to change both my cranksets now.

I best compose a thread about how the marketing men and forcing me into buying more new parts for my bike even though I don't think I really need them, or do I?!?


 
Posted : 04/03/2014 12:08 pm
Posts: 760
Full Member
 

[url= http://www.middleburn.co.uk/cranks_rs8_x_type_xc5.php ]Middleburn[/url] have already beaten them to it, albeit with a 20t granny ring


 
Posted : 04/03/2014 12:15 pm
Posts: 8835
Free Member
 

These have been available in XT and SLX versions for a few months already.


 
Posted : 04/03/2014 12:17 pm
Posts: 0
Free Member
 

Well I must be a complete idiot, i'm running a 2 x 9, 22/36 rings, 12/36 cassette and square taper bb on my 29er. Then I go and load it up with camping gear. I mustn't be having any fun at all getting it so wrong


 
Posted : 04/03/2014 12:17 pm
Posts: 0
Full Member
 

Can anyone explain this

M770 (9 speed) comes with 44-32-22
M780 (10 speed) comes with 42-32-24

So why do they need to change the BCD to get 22teeth on a 10 speed ring

Come to think of, is there any reason why you cant use 9 speed chainrings with a 10 speed chain

(Yes I'm a bit nerdy with gears)


 
Posted : 04/03/2014 12:21 pm
Posts: 41642
Free Member
 

So why do they need to change the BCD to get 22teeth on a 10 speed ring
They changed it on the middle, not the inner (or have they?). 104mm won't accept a 30t in anything other than those funny offset designs.

Come to think of, is there any reason why you cant use 9 speed chainrings with a 10 speed chain
Usualy not, but some (particulalry 8 speed) are too wide to accept the narrower chain.


 
Posted : 04/03/2014 12:50 pm
Posts: 0
Full Member
 

Yep, your right, the inner is still 64

Still wondering why Shimano have only do 24 teeth chainrings for 10 speed up to now


 
Posted : 04/03/2014 1:06 pm

6 DAYS LEFT
We are currently at 95% of our target!