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Two more stabs at airless bike tires

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Two more stabs at airless bike tires

Old 11-22-16, 06:18 PM
  #1  
rmfnla
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Two more stabs at airless bike tires

New approaches at an old concept:

https://www.kickstarter.com/projects...t-free-forever
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Today, I believe my jurisdiction ends here...
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Old 11-22-16, 06:49 PM
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I wonder how the drillium tire would do in wet weather. Probably fling water everywhere. For most casual bike owners, who occasionally go for a ride, these would certainly eliminate the primary cause of flats: diffusion.
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Old 11-22-16, 07:10 PM
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Been a great year for hucksters and con men....
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Old 11-22-16, 08:50 PM
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Originally Posted by shelbyfv View Post
Been a great year for hucksters and con men....


^^^Win post of the night. Allow me to add Not My Tires.
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Old 11-22-16, 10:01 PM
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Oh, and I wonder about the rolling resistance of these tires. 2:16 in the video isn't exactly confidence inspiring in this regard... rider stands and pumps, but doesn't seem to go any faster!

Still, I would like to try 'em, even if I wouldn't buy 'em.

Last edited by AlmostTrick; 11-22-16 at 10:04 PM.
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Old 11-22-16, 10:13 PM
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15 minutes to MOUNT a tire...?

yeah, that's awesome, can't wait to get some...
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Old 11-23-16, 04:24 AM
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Originally Posted by rmfnla View Post
Cycling is much more than a tendency.

Along with guys’s choices, girls’s cycles are equally varied, practical and fashionable. There are more than enough to select from nowadays in regards to hybrid bikes.

Then look no further if you’re outside in the marketplace for one. But let’s begin with a couple of things that will help you make your selection.

Check it out! Vilano Shadow Road Bike with Shimano STI Integrated Shifters Review - GMC Denali Road Bike
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Old 11-23-16, 05:20 AM
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Like others, I have my doubts, however it is funny how everyone immediately laughs at the idea of an airless tire. As technology advances, thinking that there will not be any comparable alternatives to pneumatic tires, is just silly. I am not be a first adopter, but I would not be surprised if one of these products, or something similar, is in mainstream use within the near future.

As a side note- "15 minutes to MOUNT a tire...?

yeah, that's awesome, can't wait to get some..."

15 minutes seems like a good trade off if you could mount a tire and literally not touch it for say, a year. Of course the ride quality would have to be comparable.
Bruce
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Old 11-23-16, 05:26 AM
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Originally Posted by sarahbruce View Post
As technology advances, thinking that there will not be any comparable alternatives to pneumatic tires, is just silly.
I'm with you, that's why I said I'd like to try 'em.

15 minutes seems like a good trade off if you could mount a tire and literally not touch it for say, a year. Of course the ride quality would have to be comparable.
Bruce
Yup, this too.

So lets hear some actual reviews!
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Old 11-23-16, 05:31 AM
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I did use Greentyre airless tires on my commuter for a considerable time/mileage.
I'd consider them entirely rideable, although there are some trade-offs.
Main reason I eventually went back to pneumatics was the temperature dependency.
I wanted them for winter use, when fixing a flat by the roadside is the most miserable, and hadn't considered that the material became harder with dropping temperatures.
This meant that when I had the best use of them, it was like riding with a fan belt wrapped around the rim.
More finger-friendly temperatures, they rode better, but with less benefit.
I could have kept experimenting, ordering different air pressure equivalents, but the need wasn't really big enough.
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Old 11-23-16, 06:36 AM
  #11  
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I just don't get that many flats.
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Old 11-23-16, 07:40 AM
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Originally Posted by sarahbruce View Post
Like others, I have my doubts, however it is funny how everyone immediately laughs at the idea of an airless tire. As technology advances, thinking that there will not be any comparable alternatives to pneumatic tires, is just silly. I am not be a first adopter, but I would not be surprised if one of these products, or something similar, is in mainstream use within the near future.

As a side note- "15 minutes to MOUNT a tire...?

yeah, that's awesome, can't wait to get some..."

15 minutes seems like a good trade off if you could mount a tire and literally not touch it for say, a year. Of course the ride quality would have to be comparable.
Bruce
I think they'll get the technology up-to-speed, eventually. I have the impression that solid tires are the future. There are just so many potential benefits. I mean, come on. Dunlop invented his tire in what: 1869? I think Ever Tires and Nexo is on the right (brake) track.

Last edited by 1989Pre; 11-23-16 at 07:48 AM.
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Old 11-23-16, 08:02 AM
  #13  
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Originally Posted by indyfabz View Post
I just don't get that many flats.
+1, took me nearly 2200 miles to get my first.

I could see these being great for the family that pulls their bikes out of storage once a year for a camping trip or to ride to the ice cream shop, I can't imagine any serious cyclist wanting a solid wheel, unable to change pressure for conditions or preference.
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Old 11-23-16, 08:36 AM
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There is a niche for this if the tires roll even halfway decent. I'd have gone for it when I was first starting, having lots of flats, sluggish tires and no decent pump. After discovering nice rolling tires and learning somehow to avoid flats, solid tires are not very attractive.
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Old 11-23-16, 11:21 AM
  #15  
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Maybe for kids bikes, but not for regular adult cyclist.
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Old 11-23-16, 11:26 AM
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This will likely eliminate the primary root cause of flats: wanting to ride your bike.
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Old 11-23-16, 11:56 AM
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Originally Posted by sarahbruce View Post
Like others, I have my doubts, however it is funny how everyone immediately laughs at the idea of an airless tire. As technology advances, thinking that there will not be any comparable alternatives to pneumatic tires, is just silly. I am not be a first adopter, but I would not be surprised if one of these products, or something similar, is in mainstream use within the near future.
You are correct, of course. That said, afaik, we are entering a completely new era of commercial innovation in which early adopters are asked to pay money up front for the promise of something better than what they have. Making every early adopter a defacto venture capitalist has obvious appeal to inventors but thousands of individuals have been hurt by unscrupulous... ... con artists that dangle vaporware in front of susceptible people, watch the cash pour in and then disappear. Without shame or stigma for the most part. I don't know if that's progress.
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Old 11-23-16, 12:38 PM
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Solid tires are inherently flawed insofar as the "pressure" can't be adjusted to suit the need.

With pneumatic tires, riders and bicycles with different weights can use the same tires and simply adjust the pressure for optimal handling/speed/efficiency. Contact patch (grip, friction) can be optimized by adjusting pressure. The same holds true for riding conditions. You can't, for example, drop the pressure on a solid tire when the pavement runs out and you hit a long section of gravel.

I fail to see how a solid rubber tire can be made adjustable the same way a pneumatic tire is with pressure. With solid tires, you are stuck with that "pressure" once you roll on it. Adjustment means purchasing a whole new tire rather than manipulating air pressure.

Yes, I am a detractor. They will forever be relegated to those short-trip subway cars at the airport.


-Tim-

Last edited by TimothyH; 11-23-16 at 12:41 PM.
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Old 11-23-16, 12:41 PM
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Originally Posted by dabac View Post
This meant that when I had the best use of them, it was like riding with a fan belt wrapped around the rim.
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Old 11-23-16, 12:42 PM
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Originally Posted by wilfred laurier View Post
this will likely eliminate the primary root cause of flats: Wanting to ride your bike.
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Old 01-11-17, 07:33 PM
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The solid tires from aliexpress are pretty cheap @ from 13USD
https://goo.gl/pXpyfw
They don't seem to use pins like the Tannus, so I am not sure how well they stay on. They have the same wet weather low grip issues according to a reviewer, and wet weather would be the only time I would want to use them.

I wonder if it would be possible to DIY some spiked tires for snow by driving nails up through the base of these. 13 USD plus a few hard nails would be cheaper than tires with spikes. We only have a few days of snow so I have not yet purchased tyres with spikes. (Gosh I am so inventive! Not. Because on second thoughts, the nails would be driven into the rims and probably rip holes in the tyres.)

Apparently Tannus, and perhaps the ones linked above from China are only as heavy as puncture resistant pneumatic tyres.

Last edited by timtak; 01-11-17 at 08:46 PM. Reason: to brag
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Old 01-11-17, 07:46 PM
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Originally Posted by 1989Pre View Post
I think they'll get the technology up-to-speed, eventually. I have the impression that solid tires are the future.

If they had internet message boards in the 70s, you would have read the same thing.

I agree someone will eventually figure it out, but eventually can be a long, long time.
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Old 01-11-17, 07:57 PM
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Institutional wheel chair wheels have airless tires on them .

Local Medical supply shop ships the wheels out when they need service .. it takes a Machine.
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Old 01-12-17, 02:42 AM
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Originally Posted by timtak View Post
The solid tires from aliexpress ...don't seem to use pins .
The ones I've used didn't either.
The instructions were very clear ONLY to use a tire whose rimside width was a very close match to your rim width. I'd assume the pins are a way of getting each tire to fit a bigger number of rims.


Since I had a good match - and considering the force it took to mount mine - I had no worries about mine coming off accidentally.


Originally Posted by timtak View Post
I wonder if it would be possible to DIY some spiked tires for snow by driving nails up through the base of these.

I don't think that'd be worth the effort.
The metal in (most) nails is quite soft, and will wear fast on bare ground. And there's bound to be some of that around.


I'd also worry about what'll happen to the rim as they're driven backwards, against the rim with each turn of the wheel.


I'd also worry about the integrity of coils/loops of reinforcing fibers embedded in the base of the tires if you run a bunch of nails through them. w/o those loops I do suspect the tire would come off.


A better option for DIY is to use sheet metal screws.


Hard enough to take thread in metal, they have a better level of wear resistance on bare ground.


Or try my approach. I got some old studded tires, retired b/c of sidewall cracks.
Pulled the studs out and mounted them in a solid tire.


A bit tedious, but not particularly difficult. They've stayed in rather well too.
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Old 01-12-17, 04:55 AM
  #25  
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Originally Posted by timtak View Post
Apparently Tannus, and perhaps the ones linked above from China are only as heavy as puncture resistant pneumatic tyres.
I decided to try a pair of Tannus tires on my winter commuter. 700x23.

I think my Tannus came in just a bit lighter than my Marathon Plus tires.

My kit came with wide pins, but I needed really narrow pins, and narrow rims, it was a bit of a pain to mount. But once mounted, they have been trouble free.

I do think the bike is slightly slower than my other bikes. I'll try to get a better measurement next spring.

My biggest issue is that they get really slick when wet. It is hard to quantify, but everything seems just a little more slippery, as if it absorbs water like a sponge, then releases it like a lubricant layer.

Looking at the horizontal tabs on the Tannus vs T-shaped pins on the Nexo. It is hard to tell if my rear tire is wearing or compressing, or both, but it may have lost about 1/4 of its original height, maybe more. But, I'd wonder if the plastic would start to wear through or bump with the narrow lightweights.

Anyway, the Tannus tabs seem secure once installed (and maybe after a few days riding to settle in.

I'll probably eventually put a pair on my favorite cargo trailer. No sense in having tubeless on the bike and tubes on the trailer.
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