2019 Stumjumper chain guide compatibility issues
- Thread starter csermonet
- Start date
normally yes, but i thought this was supposed to be the bike that moved beyond all the usual S proprietary stuff and compatibility issues.
what model? what mount style / interface / standard?
Yeah the narrow wide rings and clutch are definitely not perfect. I had my chain slip off a brand new chain ring half way up Laurel Mountain in January; when that one happened I though the chain broke. Almost started crying before I realized what happened, that would have sucked so damn much. 
The most frequent issue I have is a stick getting sucked up in the chain ring and essentially derailing the chain. That's happened a bunch of times and is pretty annoying.
The most frequent issue I have is a stick getting sucked up in the chain ring and essentially derailing the chain. That's happened a bunch of times and is pretty annoying.
I don’t know, it just doesn’t happen for me anymore. The two times I can remember since about 2012 a large stick jammed in between the chain and ring and the other my derailleur was about to fall off (loose). This includes many park days, DH races, etc. Its truly something that is right with the industry(tm).
Geeze... We're only halfway through 2018.
If you feel you need it, go for it. This is one of the areas where I feel progress really has been made, where in the past I would occasionally drop chains or have to run a guide, these days no need for me.
We got great things planned. Truly great things.
jeeze this is a shit show. It's a 2019, i purposely left out the issue to keep it relevant with people actually building it. Its ISCG05, and depending on the layout of your guide (this bike is intended to only run an upper guide, as it doesnt have the lower mounting tab), and depending on what the orientation of the backplate is, it will not clear the pivot. As far as i can tell, you have to run either a Spesh guide, I've seen people make an MRP work, I think i can get my Wolf Tooth to work as well although haven't attempted yet. If you look where the adjustable part of the backplate is (for different chain ring sizes), the OneUp is to the left of the upper mounting tab, and on WT, MRP, and Spesh guides that adjustable section is either right above that upper tab, or above it and to the right. When the adjustable portion is on the left like the OneUp, it makes the backplate extend too far towards the rear of the bike and it will not clear the pivot. Anyways I was peeved because I already bought the OneUp guide, i also think it looks the cleanest and I really like what they are doing in general, but I guess I can shop it around to friends and sell it.
You're correct..... Fuck. Whered it all go already?
and possibly get enough for it to cover the $30 specialized guide.
I really appreciate the offer thats actually really nice of you. i think i can manage though. The Wolftooth works when I bring the guide out with their nifty little chainline adjustment thing they have. We'll see if that plays nice with the actual chainline though, still waiting on my Renthal cockpit and chainring.
This is true, I might end up keeping it for a future build. Specialized makes it hard to buy that guide, they should have included it in every spec, it probably has a sub $2 manufacturing cost. They won't let you buy direct because its a "service part" and no one has it online, so you have to go to a shop. They do sell a guide on their site but it's a different part number, i'm pretty sure the one they include with the top spec bikes is a custom part specifically designed with the new SJ in mind.