There is a good amount of deflection on the tire, I wish I had a force gauge to measure how much. This weekend I will try to get a good picture of the peg sitting on the tire to give you an idea of how much deflection I am getting. I did not want too much force to add additional strain to the weed eater crank/bearing, so I am going to experiment with loosening up the tension on the springs until I find that tipping point.
Grats on the 49 lbs, that is AWESOME! Atkins has always worked well for me, so I hopped back on the Atkins train, along with riding my pedal powered bike (ugh). I have 10 more lbs to go to reach my target weight, so the easy weight loss is over, now I gotta work for it