I've got three bikes: a Kona Jake, a Marin Muirwoods 29er and a Gitane Gypsy Sport fixed gear conversion. One of them seems to be causing my knee trouble every time I ride it. It's not the fixie. It's the Muirwoods.
Skip this paragraph if you don't care about the back story. I'm not entire sure how much this is reality and how much is my imagination. I've ridden this bike for 2300 miles, most of it last winter. I started having trouble with my knee some time last February. It got progressively worse until spring came and I started riding my Jake more regularly. By the time it went away, I had mostly hung the Muirwoods up for the summer. I've ridden it a dozen times or so since then, and it seems like every time my knee starts acting up.
So, I'm trying to figure out what could be up with this. The pain is on the inside of my left knee (distinctly not the front or back but the side). It feels like I twisted it. It generally doesn't bother me while I'm riding, but later in the evening.
I've spent a lot of time tweaking the saddle position--up, down, forward back. I tried putting it the same position relative to the bottom bracket as the Jake, which I've had professionally fit, but the Muirwoods has a different seat tube angle and this didn't feel right. I've got it in a position that feels pretty comfortable.
The gearing is different from the other bikes, but I generally don't mash. It's certainly easier that way than the fixie.
I've switched clipless pedals with the other bikes and that doesn't help.
The headset seems to come loose a lot on this bike. I don't know if that could be related.
My suspects are:
- Q-factor from the MTB crankset
- Loose headset causes me to twist my knee more than I notice
- Planting my foot while this heavy beast is still moving a bit at traffic signals
- Dismount from different position is twisting my knee
- Bike really needs fitting in spite of my efforts
- 39-year-old man should be blaming his knees, not the bike.
What do you think?