55mm Chainline??
 

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

[Closed] 55mm Chainline??

11 Posts
4 Users
0 Reactions
760 Views
Posts: 0
Free Member
Topic starter
 

So my new frame coming (Slash) is 55mm chainline

Trying to understand if my current X01 cranks are going to fit.

presume these are standard 52mm (coming off Vitus Sommet)

I will run a 30T so gives more clearance.

55mm seems a rare breed??!!


 
Posted : 19/01/2021 10:08 am
Posts: 7954
Full Member
 

55mm is achievable with raceface 30mm cranks using a different length spindle. There is a tech document on their site with the details linked from the crank models.


 
Posted : 19/01/2021 10:13 am
Posts: 2684
Full Member
 

My understanding is that you just need a zero offset chainring. Your current chainring will be 3mm giving you a 52mm chainline. Therefore zero 0mm will give you 55mm.


 
Posted : 19/01/2021 10:28 am
Posts: 0
Free Member
Topic starter
 

ah yes - this makes sense, and hopefully don't need to order a new crank - cheers


 
Posted : 19/01/2021 10:39 am
Posts: 40225
Free Member
 

I don't know about that particular bike, but as Davros says you can get different offset chainrings if you have a direct mount SRAM crankset.

I know Superstar do 0mm, 3mm or 6mm offset rings for SRAM - and one of those is likely to be correct. They have a 20% off deal at the mo as well.


 
Posted : 19/01/2021 10:42 am
Posts: 0
Free Member
Topic starter
 

yep just looking -
wolftooth and superstar. nice


 
Posted : 19/01/2021 10:47 am
Posts: 7954
Full Member
 

Just be careful with crank clearance on the chain stay. Does it need a 55mm chainline because the back end is wide.

Some direct mount rings you can also flip the ring over two get a wider chainline.


 
Posted : 19/01/2021 10:51 am
Posts: 40225
Free Member
 

yep just looking –
wolftooth and superstar. nice

I've found the Superstar ones last really well, FWIW.


 
Posted : 19/01/2021 10:52 am
Posts: 0
Free Member
Topic starter
 

hmm good point - that is an important question nixie....

I suppose until I offer them will be hard to know


 
Posted : 19/01/2021 10:52 am
Posts: 0
Free Member
Topic starter
 

https://www.bike-discount.de/en/buy/truvativ-descendant-carbon-eagle-dub-12-speed-dm-crank-30t-55mm-874708

Seen these as a backup...


 
Posted : 19/01/2021 10:55 am
Posts: 0
Free Member
Topic starter
 

looking on the spec of the complete slash it comes with a

Size: M, M/L, L, XL
SRAM GX Eagle, DUB MTB Wide, 30T, Boost (55 mm chainline), 175 length

so as you say, maybe need it to clear the back end....


 
Posted : 19/01/2021 10:59 am
Posts: 0
Free Member
Topic starter
 

https://absoluteblack.cc/sram-oval-bb30.html

Interesting as here Absolute Black say a superboost crank with a 0 offset ring is 55mm chainline!??


 
Posted : 20/01/2021 9:48 am

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