Originally Posted by
maddog34
or maybe, one time in Band Camp, maybe the, the rider skidded really hard, and.,and, and...
By way of Reviewing what you have ignored... "I've had two identical tube failures within a few days of each other, consisting of a big split and a little deformation next to the split. These tubes were in different wheels. I can't see anything wrong with the rim tape in either wheel. Cloth tape in one rim, plastic in the other. I've had the wheels and tubes for quite a while without any problems. The splits were on the rim side of the tubes. I didn't over-inflate the tires (about 50 PSI for tires rated for 65). Neither happened while riding"
Then he must have found the cause of his flats, because his expertise has ruled out the rim strips. Surprising that anyone who can so decisively rule out a problem needs any help at all.
Or, the OP can take ALL the suggestions and evaluate them equally since they are don't know everything. Which is why I suggested looking more carefully at the rim strips - how they cover, how wide and how well they stay in place.