I had a series 3 flats in a short time with Tubolito. I almost never flat. Company replaced 2 promptly I can’t blame the tube for 1 of those flats as I picked up a rock puncture. Also experienced valve leak that was fixed with Loctite.
Bought a patch kit to fix 2 tubes neither patches held. $100.00 worth of tubes in the trash. I am staying with latex for “unloaded” riding & butyl for loaded touring/groceries etc. . Bernard From: rbw-owners-bunch@googlegroups.com <rbw-owners-bunch@googlegroups.com> On Behalf Of Garth Sent: Wednesday, May 15, 2024 3:09 AM To: RBW Owners Bunch <rbw-owners-bunch@googlegroups.com> Subject: Re: [RBW] TPU inner tubes - Anyone using them? T On Wednesday, May 15, 2024 at 1:08:28 AM UTC-4 travis...@gmail.com<mailto:travis...@gmail.com> wrote: When I wrote that the sizes and weights explained the appeal to "oldez", I was referring to riders like myself trained by the bicycle press from adolescence to stop and look -- and even spend, again -- to save some grams. Chis Fly might also have been thinking of the experience of riders saving less weight than was the promise of "CO2 cartridges will replace pumps", what with the backup cartridges in case of failure to dispense correctly or the insufficiency of just one, or two. The expected maximum benefit for all the risks of disappointment in TPU tubes is estimated in tests with measurement repeatability of +- 0.3 watts, on the order of 2 watts per tire @50psi compared to a thin butyl tube. Expected benefit compared to the lightweight butyl tube may be no more than 1 watt per tire , about the energy loss of a tube rubbing inside your tire. (Latex tubes are grippy.) (I apologize that the rightmost original column with average energy losses in 3 fast 25mm tires @ 60psi would not fit in a screen shot. The lower the pressure, the greater the expression of between-tube differences.) [https://groups.google.com/group/rbw-owners-bunch/attach/30e76badecf96/image0.png?part=0.0.1&view=1] - -- Harry P Travis Portland, OR USA 17.4.1 On May 14, 2024, at 6:03 PM, Chris Fly <four...@gmail.com> wrote: light weight and a small footprint is all well and good until you are on the side of the road, tired and blow through your tubes trying to get your tire seated back on the rim.. these seem way too fragile for me to worry about the weight difference.. and I'm sorry, but I just can't see the difference between a good latex and a TPU making that much difference when riding.. I get the numbers will say the TPU spins up xx% faster from a stop, etc. but I don't buy that it will make much of a real world difference.. and, as I said prior, I don't even use a latex tube as a spare based on how you can bung those up as well on the side of the road.. ride what you want to ride for sure, but don't try and sell me on the advantages of saving 50g (100g for a set) when the total system weight for me is around 235 lbs.. especially if it sacrifices reliability, which it seems to do in this case.. Chris On Tue, May 14, 2024 at 5:43 PM Harry Travis <travis...@gmail.com> wrote: A pic to remind of best reason - WL mentioned it early- why these have even oldez wanna spend. these are all tube for nominal 25mm tires. including one 80g latex tube and three butyl tubes for nominal and indeed small 25mm tires. Lightest TPU tubes weighed 20-25g. <image0.jpeg> -- Harry P Travis 17.4.1 On May 14, 2024, at 4:28 PM, Patrick Moore <bert...@gmail.com> wrote: Sheesh; sorry for the bad experiences and, again -- don't hate me for this -- thanks for being the bad-news guinea pig. Let us know if you ever rustle up Rene Herse customer service for refunds or replacements. I use Schwalbe extra light butyls with Orange Seal regular formula in road tires (30 to 60 psi, 559 X 42 and 559 X 28, slightly lower psi in front than rear) and I am very happy to report that this works well. I guess I'll continue to be happy with this arrangement for a while longer. Everybody: If you experiment with TPUs, please keep the list informed. Thanks. Patrick Moore, who would love to swap 70 gram / 100 gram butyls for 35 gram, faster-rolling TPUs with compatible sealant proven against goatheads, in ABQ, NM. On Tue, May 14, 2024 at 5:19 PM Ted Durant <tedd...@gmail.com> wrote: Another update. Found my Riv Road (622x32) had an almost flat front tire this afternoon. Pulled the tube and found no holes but a very slow leak from the valve stem. Using my fingers to grip the stem, I was able to back off the core then re-tighten it. The leak was worse. So, I gripped the valve with pliers and again re-tightened the core. As I worried would happen, when I went to reinflate the tube to check for a leak, the tube had broken at the base of the stem. That tire is now inflated by old reliable Schwalbe no 16. Out of the six tubes I bought in that size, I'm down to three usable. I like having removable/replaceable cores, but they're kind of silly on tubes that have such a fragile connection to the valve. The repair I made yesterday (Waterford ST-22, 622x32, rear wheel) didn't work. I pulled the tube again and checked for leaks in water, which I should have done yesterday. I'm not sure whether what I thought was a hole actually was, but I found a tiny hole in the same place relative to the valve stem, the other way around. The hole was so tiny that it was not at all visible - only could find it from the bubbles that came out of it under water. So, that one is patched and reinstalled. I've used Schwalbe superlight tubes on my Breadwinner (584x48) and had mostly good luck with them, though I did get a flat on that bike's maiden voyage. That was a special treat because it was my first experience with rims designed for going tubeless and I didn't know how hard it would be to get the beads off the shelves (and back on again). I'm going to experiment with superlight tubes on my Riv Road, where I think I'll benefit from them. Not sure I'll use them elsewhere. Ted Durant Milwaukee WI USA -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. 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