How the PumpTire Works
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Uploaded by videopumptire on Jul 14, 2011
Short video showing the technology behind the pumptire as well as a prototype demo showing a pressure rise from 22-52psi.
- 287 likes, 10 dislikes
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Uploader Comments (videopumptire)
Top Comments
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I like this, but what about water getting sucked in the tire?
6 months ago 85
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What about tire wear? I can't imagine that outer tube lasting very long in real world street riding.
6 months ago 78
All Comments (86)
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Nice, but the two top comments are legit.
3 months ago 3
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Amo la física!!!!!!! y tengo que tener una par de estas en mi bici hahaha.
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They stole this off Tomorrow Never Dies.
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what would happen if the hollow tube burst.
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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)
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great idea i wish i had this right now!
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he looks like keanu reeves
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Hi, i like your idea. What are the limitations that stop you from putting this on cars? Or is that a future idea?
goodluck with your invention :)
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How exactly does the air get into the small tube that pumps the air into the innertube when it's flattened by the road??
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@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 6 months ago
@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.
videopumptire 6 months ago
Great idea!
oldguitardude 7 months ago 17
@oldguitardude Thanks! Feel free to share the video with other cyclists.
videopumptire 6 months ago 2
actually it does work starting from zero pressure. Stay tuned in the next weeks and I'll post that video!
videopumptire 7 months ago 5