How the PumpTire Works

Short video showing the technology behind the pumptire as well as a prototype demo showing a pressure rise from 22-52psi.

• Category

  Science & Technology

[videopumptire]

@bhop0073 @redinferno13 @tony8999 @heyiffy2000 @bhop0073 The production tires will have the lumen more as an integral part of the tread. The lumen is shown as over-pronounced in the vid just for demo purposes. We're looking at incorporating Kevlar/aramid-type materials into the lumen for puncture-resistance + will ensure that the tire is very reliable.

[videopumptire]

@hoffmanp11 @donwilson @MrVogone @latinoheat361 @MarkGameVid @cargobroombroom @emceelokey The valve that comes with the tire sets the pressure. Once the tire reaches the set pressure, the pumping stops; the valve assembly stops air from being pushed through the tire. On the City Cruiser version of the PumpTire, the valve has a fixed end pressure of 65 psi + on the City Pro version, it is user-adjustable anywhere from 65-95 psi.

[oldguitardude]

Great idea! 

[videopumptire]

Thanks! Feel free to share the video with other cyclists.

[videopumptire]

actually it does work starting from zero pressure. Stay tuned in the next weeks and I'll post that video!

[evilpig]

I like this, but what about water getting sucked in the tire?

[bhop0073]

What about tire wear? I can't imagine that outer tube lasting very long in real world street riding.

[vistigioful]

Do you ever have to inflate it.

[Fendula Ratsq]

wow this is revolutionary, i hope u make it

[kinoshitajona]

What about the durability of the pumping tube? I would imaging getting one nail right in the pump tube would be an automatic replace (or at least until bike shops figure out how to repair the tire and the pump without ruining the mechanism of the pump), so it might not be very cost effective if the pump keeps breaking or punctures easily.

[EnergyReturnWheel]

How about an "airless" ERW license to bring you Quantum leaps forward? Double digit more efficient, more responsive, high speed and... available.

[Petrolianzoolbar]

Nice, but the two top comments are legit.

[pEDRO rANGEL]

Amo la física!!!!!!! y tengo que tener una par de estas en mi bici hahaha.

[MythOfEchelon]

They stole this off Tomorrow Never Dies.

[MONEYMAN602]

what would happen if the hollow tube burst.

[Oliver Burke]

Excellent stuff!! Best part of the vid is defo the camera shots - proof in a cool-looking pudding!!

Another step...to making bicycles (and their tires) as reliable as their 100x weight cousins - l'auto.

Great job, Benjamin!

(from your Bay Area Neighbor)

[RandomRhinos]

great idea i wish i had this right now!