So I went to snag the rest of the stuff from work, and a mile or so in, at the same place the last flat happened, guess what?
No, I didn't find a million dollars.
I did, however, find the limits of yet another innertube.
This one started as a fast leak; then it seemed to stabilize arround 20PSI, but that's really squishy and I figured the tire/tube would slip in the rim with the power on that rear wheel plus the weight on it, and damage the valve stem (if it wasnt' already), so I aired it bakc up to 50PSI, and no sooner had I put the compressor away and rode off than it went totally flat, just after I had pulled into traffic, of course.
I pulled off onto one of the canal path entrances and out of the way, and tried reairing it up, but no, it was done. I pondered changing the tube out for the one I had with me, but that takes an hour or more, the sun was poking back out of the partlycloudy skies and bringing temperatures back up closer to 100F (was already 95F in the shade when I left), the wind had crawled to a breeze, and I had no shade anywhere nearby that I could work on it. So I started walking it back home, trying to remember where shade might be along the way enough to do the work, and the peeking sun became full sun and the wind died completely, so I just kept going home.
When I got home, more clouds rolled in and blocked the sun compeltely, the wind picked up from a different direction and stayed relatively breezy at a couple MPH, and the temperature dropped a few degrees. Naturally this couln't happen while I was out walking, or working on the bike.
I dug out the tools, setup the bike on blocks, and changed the tube for one of the two BikeFanatic sent me in the last care package boxes; a pre-Slimed branded tube (made in China, unfortunately, but so was the one I just blew). The old tube blew a little hole on the INSIDE of the circumference, nearly directly opposite the valve stem. It does not correspond to any rough spots or pointy things anywhere on the wheel or tire, and I did nto find any debris inside the tire/wheel/etc when I was opening it up.
The slime in the tube could not have done anything about this hole. Also, the slime seems to have congealed into ropes isnide the tube, which is wierd. It is "fresh", as in newly-installed when I put the tube in when I changed to this Armadillo-armored tire.
I can patch it, and probably will, just to have another spare tube, but this is pretty annoying. (I could probably have patched it on the road and continued, but I figured it was just as likely to be the valve stem or some other unrepairable damage, since it would not reinflate at all, and I did not even bother to check till getting home).
Now a friend is coming over so we can go to American Foods in Mesa for groceries and whatnot (he has a new-old car he really likes to drive, so he is picking me up at the house rather than me meeting him near end-of-line on the lightrail by bike), so I will have to do my salvage trip another time, probably tomorrow when I am working anyway. Oh, well, at least the flat didnt' happen on a workday.
In other news, the rim is cracking around the nipple holes. Not severe yet, but I guess this is the result of all the weight of this bike on it as a rear, possibly plus the power put thru it (4KW+) in bursts on takeoff on the occasions I can't keep my lead thumb under control.
View attachment 6
The clamping dropouts are holding up well; as is the axle, so far. No rocking or other damage that I can see yet, though close examination of the pics does reveal some details that might show damage, I think it is from previous issues as a front, on the axle.
