back pain- again

dvince said:

I have constant back pain, especially when pushing big gears or climbing.
I think this is causes by small frame (56.5 top tube-slopping, height 183cm, 91cm inside leg measurement), although with BikeFit the position with 13cm stem is quite correct (ideal race position). Before I had 57cm frame with same problems.
The saddle-stem height difference is 9cm (for my opinion is too big, but with BikeFit I should have 10cm).
My problem is that I am sitting far back on saddle and have leg-torso angle 80-90° in all positions (this is causing big load on back)
I read somewhere that ideal angle with hands on top is 60°.
My question is: with bigger frame and small saddle-stem height difference can this pain be avoid? I am thinking of getting 58-60cm frame and setting difference height between stem-saddle around 2-3cm. My goal is to prevent back pain by raising my torso on bike and moving more ahead on saddle (sitting on nose for easier spinning). I don't care about aereodinamics.
Any other suggestions?

If your pain occurs only when riding the bike, there is a simple explanation.
It's caused by your pedalling and the fact that your lower back has to supply both pedalling resistance and upper bodyweight support and this explains why the higher gears and greater pedal pressure when climbing increase the pain. With the correct technique ( linear style), all pedalling resistance and upper bodyweight support is supplied by the hips and working arms. But you will have to wait until the scientists accept the fact that such a technique could exist. With the linear style there can be only one bike set-up and position, it is a self bikefitting technique.

dvince said:

I have constant back pain, especially when pushing big gears or climbing.
I think this is causes by small frame (56.5 top tube-slopping, height 183cm, 91cm inside leg measurement), although with BikeFit the position with 13cm stem is quite correct (ideal race position). Before I had 57cm frame with same problems.
The saddle-stem height difference is 9cm (for my opinion is too big, but with BikeFit I should have 10cm).
My problem is that I am sitting far back on saddle and have leg-torso angle 80-90° in all positions (this is causing big load on back)
I read somewhere that ideal angle with hands on top is 60°.
My question is: with bigger frame and small saddle-stem height difference can this pain be avoid? I am thinking of getting 58-60cm frame and setting difference height between stem-saddle around 2-3cm. My goal is to prevent back pain by raising my torso on bike and moving more ahead on saddle (sitting on nose for easier spinning). I don't care about aereodinamics.
Any other suggestions?

You might want to check out Steve Hogg's writings on fit & positioning on cyclingnews.com and here:
http://www.cyclefitcentre.com/index.htm

Steve's philosophy is centered around a more dynamic approach to fit. All the static measurements and such certainly provide a reasonable place to start - it's just that they don't take into account that we don't ride out bikes in 1 position with pedals at 3:00 and 9:00.

I've back issues as well and used to ride in a much more forward position. This loads the quads to a great degree. By moving further back more muscles are recruited in the pedaling action. All I can say is that it's helped me.

DK

Ouch! I have chronic lower back pain for years. I finally visited a chiropractor who took measurements and xrays and I found that my leg leg is 9mm shorter than my right. No big deal, however; the big deal is this caused me to have poor mechanics as a result of my hip rocking to the left 50% of the time. On any 50+ mile ride my back caved in. I now where custom orthotics. You might want to have an xray and measurements done. There are some shops that know a lot about unequal leg length and how to "fix" the problem, but a simple shim won't work. Good cycling books will mention the shops, but that's an expensive solution. Get the measurements done and then consideration orthotics as an option. Plus, changing head position frequently and stretching on the bike helps. Good luck.