Originally Posted by
bmcer
njkayaker,
Things were going just fine with the described set up until this last weekend. I got one pinch flat while on a club ride. I believe it was a ~1" step up in the pavement at a bridge crossing that got me. The next day, a similar discontinuity at another bridge crossing, this one hit a higher speed while planted in the saddle, got me the second time.
There's your problem. Those bridge crossings.
I don't think your pinch flats have anything to do with tubes/tyres/weights/pressures (although the latex tubes probably aren't helping).
I always try to bunnyhop bridge crossings/changes in pavement because you never know exactly what sort of surprise is in store for you at those suckers. And if I'm not going fast enough to bunnyhop I get out of the saddle, pop the front wheel over first and then bunnyhop the tail wheel over.