There have been many threads on the uni forum and elsewhere about road camber, and how it can pull the rider to one side or the other, including trails. I could never really gleen a consensus as to why this happens and/or how to solve it. Suggestions ranged from tire type, psi, saddle height, wheel dishing, favoring one side over the other, not having enough riding experience, and so on.
On the new trail that I’ve been riding with my G26er, I found myself fighting unbelievably hard against the downward slope, either to the right or left, of certain trail sections, and I was literally pulling so hard in the other direction to stay upright that it was taking all the fun out of the ride. The next day I decided to take my KH29er, which has a round profile Continental Race King 2.2 tire, which I had been using on the road.
I had been running about 60 psi and forgot to take some air out for the trail ride. Well, on the same sections where I had been fighting camber pull on the G26er, there was ZERO pull with this uni! It was a total joy not to have to fight to stay upright. I wondered if it was because of the tire profile being round or the higher psi, or a combo of both. On my G26er I run a maxxis ardent 2.25, which has a max psi rating of 65. It also has a more square profile, especially when running a lower psi for trail riding.
I theorized that where I had always been running it (at around 30-35 psi,) the footprint became so flat and square that that was what was throwing me in the direction of the side tilt of those trail sections, where the round profile of the 29er was apparently not subject to the pull of the slope. So I raised the psi of the G26er tire to a bit over 50, which kept the profile of the ardent rounder. The result was nothing short of dramatic!
There was suddenly ZERO pull no matter how much side slope I rode! I had never thought of running such a high psi on any MUni, thinking traction would be affected as well as making it harder to roll over stuff. To my surprise, this was not the case and in fact the ride was smoother and faster than ever. So, at least in my case, the camber issue was solved simply by increasing psi enough to keep the tire’s profile from becoming too flat/square. Of course, there are some tires that will still be affected by camber regardless of psi, mostly due to the profile being super square, tread design, or super fat tires, which can cause “auto steer” issues.