True airless & tubeless tires created with plastic pipe !

[Ebiker33]

I think it looks pretty cool too, I wonder how it feels to ride.

 

[ActionJackson]

I think it looks pretty cool too, I wonder how it feels to ride.

Bridgestone Japan was trying to introduce that concept a few years back but it never came to fruition that I know of. Weight is certainly a factor since your replacing air.

 

[retiredNH]

Making an airless tire is easy. Making an airless tire with low rolling resistance that can absorb bumps without energly losses is very difficult. Air has decent elasticity (as well as other related properties) and looses little energy as heat in a compression/decompression cycle. Most airless designs suffer from losses as heat during compression/decompression cycles. Remember that the lowest friction wheels are metals like steel as used on trains, but these won't work well on roads. Solid rubber tires were an improvement, but still very hard riding. Pneumatic tires, first developed by Dunlop, were a big revolution because of their softer ride and low rolling resistance.

 

[arcom]

Michelin announced in 2019 the development of an airless passenger vehicle tire. Supposedly going to market in 2024. If they do and it’s successful, I don’t see bicycle tires being that far behind.

 

[john peck]

It looks as if it has suspension inherent. Weight no problem for me, just increases the flywheel effect.

 

[harryS]

This stuff never took off with regular bikes because of the ride/weight tradeoffs, but many ebikers are willing to stick those solid inserts with tiny inner tubes into their tires to ride around worry free. I figure the that current 70 lb ebikes will simply become puncture proof 80 lb ebikes. And powered lifts on hitch racks (see Saris "Door County) will also be popular. Eekers.

 

[john peck]

Kinda moot anyhow, I don´t seem ´em reaching the market anytime soon. Look how long it´s taking
to get a infrastructure plan.

 

[rich c]

Watch this video and you will see a distinct disadvantage, spring action when you stop! Watch this Humvee rock back and forth in the video.

 

[WattsUpDude]

Imagine all the gravel that will get stuck in those nooks and crevices.

 

[6zfshdb]

These airless bicycle tire inserts have been around for a few years but never caught on for some reason.

Stop A Flat Solid Puncture Proof Bike Tube

Stop-A-Flat Solid Puncture Proof Inner Bicycle Tubes guarantee you will NEVER have a flat tyre again! No more wasted money replacing tubes. Stop A Flat Mounts quickly to most rims. Great for bicycles, trailers and jogger/strollers. Please note that the 1.75 sizes will fit a 1.90 Tire. Compatible...

blueskycycling.com

Has anyone tried them?

 

[theemartymac]

I can't see very good lateral stability from the bike tire widths either. They are suspended/supported in one direction only, so lean hard into a corner to load the sidewall and you'd be asking for a sudden and possibly catastrophic deformation. The air in a standard tire will ensure the tire has a useable profile at 0 degrees as well as 45 degrees.

 

[JRA]

They got the insane part right at least.

 

[rich c]

Normal characteristics on the humvee due to its axle it is equipped with portal axles.
The back and forth movement is caused by the gear lash in the hub.
Those types of wheels are nothing new for heavy equipment applications. New on bikes though.

If you closely watch the hub an then the wheel, the hub doesn't move and the honeycomb wheel structure is deforming back and forth.

 

[AHicks]

It's not deforming at all, it is giving more surface contact. I have seen those on giant caterpillar front loaders at our scrap metal yard on the Island. I wouldn't put it to use on my bike
Schwalbe is the recommended tyres for my bike.
Entertaining to see.

On the bold, for sure! There's an imagination at work.....

 

[retiredNH]

It's not deforming at all, it is giving more surface contact. I have seen those on giant caterpillar front loaders at our scrap metal yard on the Island. I wouldn't put it to use on my bike
Schwalbe is the recommended tyres for my bike.
Entertaining to see.

Are you sure you know what "deforming" means? How can you get "more surface contact" without deforming from a circle?