Join Date: Sep 2005
Location: Hollister, CA
Bikes: Bianchi San Jose, Mercian King of Mercia
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Sounds about right. First, 1 inch adjustments are h-u-g-e. Try making more incremental changes. Lower back can be rocking hips, over-extension or both. When your saddle goes up, more weight goes onto your hands. Experience any numbness in your hands? You can always raise the stem if you have a quill. If your bike looks like nearly every other bike, you'll have to swap for more rise in one of the stems that clamp onto the steering tube.
You've opened Pandora's Box, and you're learning -- painfully -- changing one thing has a host of desired and sometimes undesired effects. The bike is a complete system. Think about it: longer cranks mean your leg is lower at the bottom of the stroke. Seatpost down. But longer cranks mean the pedal is higher at the top of the stroke. Seat up? Nooo.
One thing that often works: Ride with someone who knows a thing or two about bikes and ask them to carefully observe. Are you rocking just a little when viewed from behind? Are you very seldom on the drops or hoods? Does your back seem over-extended? Tip: as a general guideline, look down when in the drops. Your handlebar will probably hide your view of the front hub. That's about right for most folks.
Try taking the post down 1/2 inch or so and giving it around 20 miles. You'll know when you're dialed in.