Rear wheel shifting problems (Trek Rig)

S

ScottyB29er

New Member
Hey guys, I ride a Trek Rig SS. I have tons of wheel shifting problems. No matter how I adjust the chain tension system or Tighten the hardware, The wheel constantly shifts. It seems as the the chain tensioning system on these frames are weak. I even had the hardware swapped out for stainless steel hardware and had locktite put on the threads. The wheel still shifts. Are there any frames out there with a chain tensioning system on the dropouts that don't have the wheel shifting problems? I was gonna look into a Salsa El Mariachi frame but I would like to hear from people that own these frames. I know the steel frames with the eccentric BB's would be a way to go but Im not trying to spend 900 bucks on a Niner frame, unless there is another alternative? Any suggestions or help would be greatly appreciated. Thanks.:hmmm:
 
How long ago did you purchase the bike? I'd take it back to the shop and have them fix it. If the bike is relatively new there's no reason that you should be dealing with it.

Side note: The trek website is infuriating to navigate
 
I bought the frame set less than 3 months ago. Heres the other problem that I forgot to mention. I just bent either the chain stays or the seat stays yesterday because now when I mount the wheel its just crooked. Doesn't run straight up and down with the seat tube anymore. I took it back to the shop to have it looked at before when I snapped the lock bolt just from riding. Thats why they switched everything over to stainless. The design just sucks. I hate to say it because I love the geometry of the frame. The chain tensioner design just sucks. I want to move on to a steel frame soon. Thats why I was asking about the El Mariachi because I wanted to know if anyone has that frame and if they have wheel shifting problems. Id love to get a Niner sir9 but thats just stupid expensive haha.
 
There's a lot of love for the El Mariachi. Check out mtbr.com for opinions (I think a few people ride them here, but not positive...). Having ridden neither I think the alternators are better than an EBB by design. Both have geometry implications (stretching your chain stay length with the alternators and moving your cranks with the EBB).

If you plan to swap everything over don't forget to account for possible difference in seat tube size and little things like that. Is the Trek fork a G2 fork?
 
I hate to say it, but there really aren't any great singlespeed options that don't cost dollars. I've had a lot of different set ups and they all are lacking in at least one way or another. I have an older Mariachi, and the Bushnell EBB is OK, but it does slip. I've had various sliding dropouts (but have not ridden on paragon dropouts) and they slip too. I have track drops with two tensioner contraptions, and they also slip - though they are the best option that I've had so far. If you're having big problems with a 3 month old bike, you should definitely have the shop take a look.
 
Do you have the newest model or an '11? If you can get it to me, I can fix it. Stainless bolts aren't the issue. It needs 2 things. A) You need to take the insert out of the dropout, clean it, and then re-install it using a friction compound like Tacx. B) You need someone to make you Monkey Nuts as Manny suggested.

-Jim.
 
Ok as for getting the bike fixed Ill def keep you in mind. I don't know where id get monkey nuts made but Ill look into it. I did check out mtbr.com and looked up the Salsa El Mariachi and found that the wheel shifting problems are non existent with the alternator dropouts. Im waiting to see what is going to happen with my frame since it seems like something is bent now. I contacted trek about the issues. They are gonna call my shop and come up with a solution. If the problems continue I may see a Salsa frame in the near future. I saw no serious complaints about that frame on that site. I looked up the rig and saw that most of the posts were people complaining about the sliding dropouts slipping all the time. I feel like I should be riding a steel frame either way. Im a big guy.
 
This is a common problem with that frame. Look around on mtbr.com and you will find plenty of posts detailing the problem. From what I've read trek is aware of the problem and has a fix for it.

And btw I've had zero problems with my misfit frame which wasn't expensive at all.
 
I will let you know about the monkey nuts most def. I took the bike back to the dealer where they worked with trek on the issue. I haven't had a chance to take it out for a ride yet but I have a good feeling it will work. The tech that worked on it took it out for test spins until the wheel stopped shifting. He'd torc the drivetrain hard going up a steep hill to make it shift. From what he told me is that he cleaned the dropouts and de greased them, then used a friction compound and replaced the hardware with beefier hardware. He still recommended getting monkey nuts made tho. Ill have to get the dimensions from him to get them made. Ill let you know. Thanks.
 
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