thanks, DougP. So (assuming that single data point is representative) I wonder what that says about the efficacy of tire shaving?
On Tuesday, November 24, 2015 at 12:03:33 PM UTC-6, dougP wrote: > > Bill: > > An interesting question to which I have a single unscientific data point > anecdote. One of my touring buds has run Schwalbe Marathon Plus (the REAL > tank tire) for quite a while for the durability & flat resistance. He also > likes to run things to the last mile. At his last tire replacement, he'd > worn down to where the blue puncture belt was peeking thru in several spots > around the tire. IMHO that's way beyond worn out so call it "the last > mile". We weighed both the worn tire and the new one on a postal scale at > the PO. Granted, to be correct we should have compared before'n'after for > the same tire but these things last years. We were both surprised to find > that the worn tire was only 2 ozs lighter than the 32 ozs of the new tire, > or roughly 6%. Considering the thickness of the tread we were both quite > surprised at the result. My guess is most of the weight of a tire is in > the carcass & beads (anyone up for a little tire dissection?). I'd be hard > pressed to detect any difference in ride quality between worn & new, but I > sure can detect a difference in flat resistance. > > dougP (happily Marathon-ing along) > > On Tuesday, November 24, 2015 at 6:53:03 AM UTC-8, Mobile Bill wrote: >> >> Regarding slowness: Since we're getting most of our mileage out of these >> Marathons AFTER the 3,000 mile mark, you have to wonder what role wear >> plays in weight reduction and pliability (it's as if we're riding shaved >> tires for most of the mileage). I haven't weighed, but at the halfway >> point, I bet the weight has been reduced to a level that's less than many >> middle-weight tires. My butt's not delicate enough to gauge it, but I sense >> that pliability increases to some degree. After a break-in period-- let's >> say, 1000 miles-- I propose that whatever speed liability the marathons may >> have had would be reduced below a level of real-world significance. And >> that means for the next 7,000 miles (equivalent to two or three new >> "faster" tires) it don't matter. (Of course, I am happy to spend a few >> extra hours riding around on my bike every year, so I'll confess, it's >> mostly a hypothetical issue with me.) Lynne Cooney, I see you took the >> Spring Hill Avenue Lucky Charm with you. Hope you are well. >> >> On Friday, November 20, 2015 at 9:35:20 PM UTC-6, Mobile Bill wrote: >>> >>> It would be wrong to suggest that Marathons never flat. I just had my >>> third flat, a slow leak ... in the course of riding 5 Marathons 22,000 >>> miles on my Saluki (not sets of tires, but 5 tires). The tires I have on >>> there probably have at least a couple of thousand left in them. I keep >>> thinking I should replace them with something more clever. But getting this >>> flat weirdly reminded me of why I'm reluctant to give them up. >>> >>> >>> >>> >>> -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
