Originally Posted by
f4rrest
I have a slight curve in the spine to the right. It's called scoliosis. It's imperceptible visually, but docs mention it on X-ray. Lots of people have it naturally.
This curve to the right causes your pelvis to tilt left ever so slightly, so that you're effectively sitting on the left sit bone with a bit more pressure.
I found that shimming the right saddle rail tilts my saddle just enough that it helps to even out the pressure.
I've never seen or heard of a saddle rail shim, so had to invent one. It's just a short length of 3/8 copper water tubing split open and wrapped around the right side rail. When the seat is clamped, it squeezes the tubing which squeezes the rail, so it's secure.
This sounds very interesting! I always had a bit of scoliosis anyway, and when I fell and broke my femur last year, I massively rotated my left ilium. My chiropractor thinks the surgeon also over-corrected the rotation of the femur head in the hip socket. I don't have clipless pedals (though I've thought about them), but haven't seriously considered them in order for shoe shims because my problem is in the hip, not the foot. I might have to give your saddle rail shim idea a try! It's a cheap easy try at any rate. (At this point I'm considering a consultation for a second surgery as my inability to sit straight, walk straight, etc is negatively impacting my life).