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Tannus Tire liners.

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  • Retrorockit
    replied
    No flats so far. Having the bike off the road a while I got behind on cleaning broken glass off of the bike path. I got my wake up call today. Broken bottles, and 1" roofing nails sticking straight up. Big pieces of the bottles. Got back to cleaning it up. Big enough to take out a Tannus. All clear glass too. Would have been hard to see at night.

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  • 73Eldo
    replied
    Have you been in any situations that tested the flat protection aspects again?

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  • Retrorockit
    replied
    The more I ride with the rear Tannus the more I like it. It's actually smoothed out the HT enough that I got serious about rattles on the full fendered and racked HT. Took the rattle out of the fenders, rack, folding lock, and CO2 bottles hidden inside the rack. Smooth silent and fast. It's even tight on the occasional off pavement excursion. I also find myself diving into bumpy turns I used to slow down for, and going faster around small traffic circles. On an HT or solid bike like a Redline or Cruiser I would definitely add these.

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  • Maxtandem
    commented on 's reply
    thank you, Retrorocket. Using the Schwalbe Marathon Plus Tour, will investigate if the Pickup tire is hardier.
    --------------------
    After several years without a flat, on our electrified tandem we had an explosive blowout in the rear, the longitudinal treads on a near-new top of the line Schwalbe MTB just blew apart like spaghetti.

  • CPG
    replied
    My small lot in town where I keep my crane was infested with goatheads when I first bought it, that was about 10 years ago. Since then I have managed to completely eliminate them, by a relentless regime of spraying 2-4D, Round Up, and walking the less than 1/4 acre site almost daily while the crane is warming up, looking for any survivors. You know how some people talk to their plants? Same with weeds, DIE MF'R!

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  • Retrorockit
    commented on 's reply
    FWIW the first set of these I ordered directly form Tannus. The 2nd set from Eco Cycles, an established e bike vendor. I saved a few bucks, but didn't get the retail packaging, More of a bulk type experience, but the inner tubes were better from them also. The safe bet would be to get your own tubes from a trusted LBS. But the inner tube issue is a separate thing from the liners themselves.

  • Retrorockit
    commented on 's reply
    I'm just going to put this in comments so I don't bump the thread. Somebody else
    is asking for help with their project.
    There is more going on with this mod than flat protection ( a very good thing in my case!) This has significantly improved the ride, handling, and high speed cruising of my 26" hardtail.
    Not only does it seem to add a small but useful amount of "suspension" travel, it also seems to be fairly well damped. This in itself is a big plus.
    It has definitely improved the ride, handling , and high speed capability of my 26" hardtail. In some ways a worst case configuration. Similar to going form a hardtail to a softtail bike. Now this is only as it applies to street riding small bump compliance. I'm not claiming it's much use for offroad XC riding. But maybe gravel trails it would apply.
    Regarding the increase in tire mass. It's real but probably no worse than going form 26x2.15" to say a 27.5 rim and 2.5" tire looking for the same results ,except soft surface flotation,the ability to run lower PSI offroad may even deliver some of that.
    It would be interesting to see if it helps with the undamped motions of a Fatbike tire at high speeds.Of course the weight penalty would be bigger also.
    Even though it was a PITA to install, and gave me a flat tire first try, I'm still a big fan of these things.

  • Retrorockit
    replied
    So I got in a 30 mile ride today. I'm liking the 5PSI f/r offset. So 35#F 40#R.
    What I'm playing with is suspension frequency. iI the rear is at a higher frequency than the front, at some speed the difference in front to rear response time to a bump will equal the time it takes to cover the distance of the wheelbase. The front to rear rocking motion will be canceled out and the ride will become vertical. This is what I think I was feeling at 17MPH. The HT @ 35PSI was just right. Going to 40 PSI raised the frequency of the rear so it synchronizes at a higher speed. It may have gone up to about 21-22mph. I'll Play around with 37-38PSI and see how it goes. But definitely rides good above 20MPH.. This is how the 1950-60 land yachts would cruise down the road at 70MPH with soft springs, and almost no shock,s floating up and down perfectly level. It of course works better with an actual suspension. But frequency is the reason 30-35 PSI tire pressure always feels so comfy. There's more going on here than just 5PSI tire pressure. There's a front suspension fork involved too so don't think a 5PSI offset is a magic number. 30-35PSI will always be soft, but control may be better at some other setting or some specific speed. I think the Tannus may have given me something to work with that I didn't have before. YMMV.

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  • Retrorockit
    replied
    I'm finding a sweet spot with this setup @ 17MPH. I'm going to try 40psi in the rear and see if it moves up to the 20mph range. What's going on, if I understand it correctly, is kind of technical. But related to ride tuning tricks of old American luxury cars of the 60's. So the SOP (Seat Of the Pants ) factor is relevant.

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  • Retrorockit
    commented on 's reply
    You should probably go to the Schwalbe Pickup tire for the rear on that. It would match a Big Ben Plus up front.
    Since you aren't having a flat problem otherwise I would suggest Stan's, etc. in the tubes. Based on my experience as a truck mechanic the load carrying ability of a tire depends on the volume of air, and the pressure. The construction of the tire varies to a great degree to support higher pressures.
    So I would not use the Tannus for your application since it reduces the volume of air in the tire. Schwalbe provides a chart with load capacity and tire pressure for the Pickup tire. It comes in 26x2.15, or 26x2.35. It's EU certified for high speed E bikes, has special tread compound for high speed running, and can carry 150kG. @ 65PSI. which is what you NEED to be running.
    https://www.schwalbetires.com/blog/n...tures/pick-up/
    You can fix the occasional flat, an overload failure is a completely different matter.
    Last edited by Retrorockit; 05-27-2022, 06:17 AM.

  • Maxtandem
    replied
    Like the idea of the Tannus liners. After several years without a flat, on our electrified tandem we had an explosive blowout in the rear, the longitudinal treads on a near-new top of the line Schwalbe MTB just blew apart like spaghetti. No sign of a puncture, sidewalls fine. There is easily 300# on the rear 26x2" tire with frame, tools, medical kit, riders. We also drilled out original aluminum rims (presta) for schrader despite cautions it could weaken the rim somewhat.

    With this heavy load wondering how using the foam could affect loading the aluminum rim? I know a wheel system wants to deform to flat oval at the point of pressure on a surface. How does that change if compressible foam is against the tyre face rather than the inner tube....

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  • Retrorockit
    replied
    Cleaned all the old tape glue, and rubber crumbs out of the rim, and installed fresh good old fashioned canvas rim tape.
    I think this may be a case of the Titanic Principal.(a variation of Murphy's law) Anything That Can't Go Wrong Will Go Wrong.
    Often provoked by hubris. Maybe running Stan's AND Tannus hoping to never patch a tube again was a step too far for the bicycle gods.
    I have a better (normal) inner tube, and better fit for my compensated undersize by selecting one myself.
    Took a ride last might, smooth Fast and quiet.
    A Lumina 1800 dual headlight arrived. I'll review it in " Deals, and Finds" thread because it was 30% off..

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  • Retrorockit
    commented on 's reply
    It made a triangular hole in a location where escaping air wouldn't carry sealant to it. It's back together and working now. Smooth, fast, and quiet. I just can't find Stan's around here anymore.I didn't put any in this time so it doesn't matter at the moment.

  • AZguy
    commented on 's reply
    The stans will rinse out easily with water

    On another board the tubeless guys seem to have moved from stans to the orange stuff... at my LBS the orange stuff is 50% more and the orange stuff recommends using about twice as much so in tubes I think with the track record I've got I'm sticking with the stans

    It sounds like with your initial tear it was more of an infant mortality oddity than something to worry about down the road

  • Retrorockit
    replied
    Went to another LBS. Got a Kenda 26x1.75" tube. Just a good generic inner tube. This shop also stopped using Stan's. Both places are using Orangeseal now. I got some to try.
    Using talcum powder this time I put it all back together again. Tube in liner, liner and tube in tire, stem in the rim, first bead on rim. So far by the book. Seating the 2nd bead still needed some zip ties. But I think the liner took a set and I only needed a few this time. I don't want to let the air out to add sealer. So just a bare tube this time.
    Salvaged the Stan's out of the old tube and then tossed it. With the goo inside I didn't even cut it up for rubber bands. Time to ride again.

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