Originally Posted by juicemouse
This can't have anything to do with the fork, the tire, or any weight distribution changes. I'll conjecture that it's simply an old innertube. A 10psi loss after just one ride seems like a lot to me too. What pressures are you running?
In the course of the day, I'd say I travel about an average of 40 Miles (often longer) on this bike through city streets. A ten psi loss (from 125 to 115) by the next day when I pump up is pretty typical in my experience. (Further, I'm 185 lbs - which is why I'm so vigilant about tire pressure.)
Ya know, come to think, when I changed that last flat my first choice tube was blown by getting caught between the tire bead and the rim, the second one was questionable to me - though it was in the box it lacked a certain stiffness. Simple enough, I'll get a new tube. Glad to hear on good authority that it's not more complicated than that. Thanks.