> On Oct 18, 2014, at 10:44 PM, Michael Williams <mkernanwilli...@gmail.com> > wrote: > > Allright group, I have an inquiry regarding a thump-thump Ive experienced > pretty much only with supple( 120tpi) tires and this seems like the place to > get some possible answers. Im usually not nitpicky, but this is VERY > noticeable. Every variable is the same: Tubes, tire pressure, rim, riding > area, the only change is from a stoutish tire to a ' supple tire'. I can > noticeably see a hop in the tires through rotation. Im 99.8% sure the tires > are seated correctly, I can see an even line just above the rim all the way > around. the only thing I can think of is that the irregularities of the > tube are more pronounced due to the thinner walls of the supple tire? That > the sidewall/ overall stoutness of a heavier tire dont allow those > irregularities to show up? Anyone have experience with this? Does it go > away with more miles Thoughts? And thank you in advance!!
Incorrect seating can also cause a hop, so that is the first thing to check. A bent rim, of course, is also something to check. Assuming you’ve checked those already, I have had multiple such tires that had an incorrect joint at the ends of the carcass, which is a strip of fabric that comes together in an overlap joint. The result is a sort of zig-zag distortion of the tire. Mark the tire where you see the hop, then take it off the rim and look at the inside. You can see where the overlap is, it’s about a 3/8” line; if that’s where the hop is, that’s the likely cause. I have had this problem more often in tires made by Panaracer (e.g., a Pasela, or Ritchey IME; the Grand Bois and Compass tires are made there as well but I have never owned any of those and have not heard any reports of this problem with those) than any other manufacturer (e.g., Michelin or Continental). -- 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.
