You could probably get your answer if you did a search on Coker Twist, or Coker lean…lots of threads out there on the subject. That being said, the best thing for it in my case is to ride around in a parking lot with lots of turning in both directions. Then ride on something with a definite camber (slant) in the opposite direction to you lean. The last thing that helps me it to focus on the hips and bring the hip that corresponds to the backward leaning shoulder forward. If none of this helps, search again…there are lots of great suggestions out there. Good luck!
I have this same problem. I noticed it on the cheap 20" uni I learned on.
Tried several things like ensuring the seat was aligned correctly, lowering
the seat… but to no avail. I assumed maybe the frame or something was bent
so I decided to wait until I got a new uni. Well, I just got a 24" Yuni Muni
and still have the same twisting tendency! I’m thinking it has something to
do with me, but it is really hard to diagnose… I’ve tried consciously
twisting the other way, but it feels really awkward…
So I join podzol in asking, Has anyone else had this problem and found a way
to correct it?
Lots of people have the same problem, including myself. A couple of suggestions: 1) make sure your feet are evening matched on the pedals, 2)make even down strokes with each foot/leg. 3)practice riding on a variety of slanting surfaces, 4) ride circles and figure-eights.
I noticed this first on my 29er but now I think it applies all the way down to my 20-inch also. Frustrating.
I had the same problem. I tried all sorts of things. What did it for me was adding air. I weigh 175, I put 45 pounds in the tire and it went away. Adding the air made the wheel more squirley, but I soon got used to it and it only comes back if I am really tired or there is a really nasty wind.
Just bumping this rather than making a new thread since there’s so many already. Just wanted know if any 36er riders who use the nightrider tire has noticed any more/less tendency of the uni to pull to either to the right or the left, compared to either the TA or traditional button tread coker tire. I’m making the switch from my (non-listing) TA setup, to the nightrider tomorrow, and I’m hoping I won’t encounter any unexpected listing due to the change.
Haha ok great! I was just thinking that because of the nightrider’s much higher 65 psi rating, and the fact that because of this, there will be less tire contact with the ground, that it might “magnify” any “listing” that might otherwise not be noticeable with the TA. But I guess that if the tire is partially the reason for any listing that might occur, then the nightrider would lessen any listing, (due to less contact with the road) not increase it! Yay!
I had a similar problem of having to lean to the left when riding on the right side of a crowned road. I discovered that if I rode on the left side of the road where the road sloped to the left I was able to ride upright without having to lean. Of course riding on the left side of the road is not an option so I tried turning the wheel around and swapping sides with the cranks. Now when I ride on the right side of a crowned road it is much more comfortable. It seems that the dishing of the wheel or the alignment of the frame favors the current set up.
Here’s my 2 cents, I was thinking about posting this info anyway, so here’s another possibility I have discovered through my own experiments (I know someone covered this in another thread at some point or another).
I purchased a used coker w/ a homebuilt frame, and one leg of the fork was slightly longer than the other, causing the tire to be closer to one side of the frame than the other. I noticed that this was making me constantly fight a left-hand turn, fatigue, sore arms and torqing my one leg badly. I wasn’t going to bother re-welding the frame (which was gonna be replaced anyway), so I made aluminum shims out of a soda can to even the legs out, and it made a world of difference!
I completely forgot this until recently when I noticed that on smooth pavement, or long xc rides, my muni torqued my right leg really bad (I didn’t have this problem on any of my other unis at this point). I checked the fork, and sure enough the the rim rode closer to one side than the other. Several shims later, problem solved. Even a small difference may make a difference, however my current frame Is slightly off, but apparently not enough to matter.
Lastly, I have seen frames where the seat tube actually wasn’t perfectly square to the crown and this would also have the same effect. If that’s the case, the frame should be replaced under warranty.
-hope this helps