Originally Posted by
adam_mac84
Here is an updated pic. I am going to try to ride 5-10 tomorrow to see how it feels. Flipped the stem, and raised the seat tube about 2-2.5cm. I still think that my seat could go back a tad because when i move forward on the saddle, i feel so cramped (also going up with the stem another cm or 2 will effectively push the seat 'back'). We will wait and see
assuming bike fitters measure knee flexion the same way I do in physical therapy (greater troch. through joint line to lat malleolus) then it's still nearly 50* of knee flexion Hard to imagine going up another 3-4cm in seat height... its quite a reach to the ground as it is Any other tips to get more knee extension besides going up with the seat?
The new photo with your left leg at the bottom of the pedal stroke looks like you are almost there with the leg extension. Remember that even 1/8 of an inch in seat height can make a world of difference, so this is what I would suggest:
Bring a multitool with you when you ride, so you can make on-the-spot adjustments to your seat height. Try different heights in 1/8" increments until you find that 30-degree knee-bend sweet spot where your knees aren't feeling sore after a mile-- This is the realm of fine-tuning your seat height. Oh, and at the proper height, you are NOT supposed to be able to put your feet flat on the ground when sitting on the saddle.
As far as you feeling cramped when you try to sit a bit more forward on the saddle so it doesn't feel like you are about to fall off the back of the seat, that's just another sign that you need a frame with a longer top tube (especially if your seat is already slid back as far as it will go on its mounting rails).
My additional $0.02.