Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Proteus Technology: New Material Is Strong, Light and Non-Cuttable

scitechdaily.com

Post reply on HN
Print view View original

171–180 of 249 posts

Re: Proteus Technology: New Material Is Strong, Light and Non-Cuttable

#171

Post by pmlnr »

db48x wrote: post #59
senectus1 wrote: post #50

Earlier quoted context omitted.

Sword players will still be interested...

Not really. Armor made of this material has to be much thicker than ordinary steel plate. Furthermore, ordinary steel plate is entirely effective against swords, except at the joints and articulations.

> entirely effective against swords

Against the immediate cutting, probably. But it also bends. And with bending, it could damage you really bad, including the part that removing them could become quite a trouble.

Re: Proteus Technology: New Material Is Strong, Light and Non-Cuttable

#172

Post by mkl »

taneq wrote: post #166
Godel_unicode wrote: post #58

Earlier quoted context omitted.

We definitely mind, we're just too polite to tell you. Knowing your friend spends thousands (plural) on their bike makes you feel bad about not wanting their "clean" tires, which definitely didn't roll through dog turds and cat pee on the way there, on your floors.

On the plus side, multi-thousand-dollar bikes can be lifted with one hand and slung over your shoulder if you're a courteous rider.

Not most e-bikes. They're heavier than normal bikes. I just use multiple heavy-duty locks, through the frame and both wheels.

Re: Proteus Technology: New Material Is Strong, Light and Non-Cuttable

#173

Post by walrus01 »

mkl wrote: post #172
taneq wrote: post #166

Earlier quoted context omitted.

On the plus side, multi-thousand-dollar bikes can be lifted with one hand and slung over your shoulder if you're a courteous rider.

Not most e-bikes. They're heavier than normal bikes. I just use multiple heavy-duty locks, through the frame and both wheels.

Yeah an ebike can be considerably more heavy. What I had in mind for my description was something like a full carbon road frame and fork, Shimano 105 current generation components or the sram equivalent, and a good quality lightweight wheelset.

Re: Proteus Technology: New Material Is Strong, Light and Non-Cuttable

#174

Post by oblio »

ryan_j_naughton wrote: post #99
Jedd wrote: post #44

> The freefall of grapefruit from 10 m does not damage the pulp[1] because pomelo peel consists of vascular bundles and an open-pored cellular structure with the struts made of parenchymatic cells. I have a Marsh grapefruit tree, fruiting now (southern hemisphere) as it happens, and I note that it produces particularly pithy progeny. (Ignoring for the moment that Pomelo is one of the parents of the modern grapefruit.…

> produces particularly pithy progeny > fantastically fastidious on fruit quality Great alliterations. Great writing all around. This just made my night.

I'm always amazed by the Anglo-Saxon attraction for alliterations :-)

Re: Proteus Technology: New Material Is Strong, Light and Non-Cuttable

#175

Post by jdhzzz »

mindcrime wrote: post #34
sudosysgen wrote: post #27

Earlier quoted context omitted.

This is an absolutely amazing innovation, but bike thieves have already progressed to using powder-actuated pistons in order to break the internal mechanism of a lock. Much faster and easier than cutting anything.

Not to mention pre-cutting bike racks themselves (and handrails, etc. that people lock their bikes to ), and then putting some duct tape or something over the cut. When they get ready to take your bike they don't have to cut a thing. Just lift up the cut section, slip your chain/lock through the gap, and go.

I guess I should worry more when I park my bicycle. Yikes. Are you all in Portland, OR https://qr.ae/pNsAKy?

Re: Proteus Technology: New Material Is Strong, Light and Non-Cuttable

#176

Post by ajuc »

adrianN wrote: post #146
adrianmonk wrote: post #126

Earlier quoted context omitted.

Forget locks... just make my tires out of this.

Punctured tyres are not a problem in practice anymore. Puncture resistant tyres are fairly cheap and very reliable. I cycled thousands of kilometers without getting a flat.

They are very much a problem still, I've punctured a tire recently (the expansive puncture-resistant one). That's after several punctures last year (but that was on a regular old tires, that's why I switched). Before you ask - it's not a problem with the wheel or anything, I've had it checked.

I've never had a flat tire in the countryside trips, though. It's always on broken glass some jerks throw at bike lanes in bigger cities.

Also probably the fact I'm overweight is a factor.

BTW when I was about 7 I had a small bike with full-rubber tires. It was great, I wonder why it's not done for full-size bikes. It wasn't THAT much heavier.

Re: Proteus Technology: New Material Is Strong, Light and Non-Cuttable

#177

Post by fennecfoxen »

StavrosK wrote: post #170
bosswipe wrote: post #155

Earlier quoted context omitted.

One painful lesson I learned after having an expensive bike with an expensive lock stolen is that as you harden the lock at some point the weakest link shifts from being the lock to the thing the lock is attached to.

You didn't attach it to another lock?

Some bike racks are designed to maximize capacity, and you're supposed to roll your front wheel into the rack, between some very narrow vertical bars. You could probably cut the bars with any decent bolt cutter, and certainly with a hacksaw. The U shapes and up-and-down S shapes, where you can move your bike alongside a thick element and lock the frame, are fundamentally better but will still be cuttable.

Re: Proteus Technology: New Material Is Strong, Light and Non-Cuttable

#178

Post by adrianN »

ajuc wrote: post #176
adrianN wrote: post #146

Earlier quoted context omitted.

Punctured tyres are not a problem in practice anymore. Puncture resistant tyres are fairly cheap and very reliable. I cycled thousands of kilometers without getting a flat.

They are very much a problem still, I've punctured a tire recently (the expansive puncture-resistant one). That's after several punctures last year (but that was on a regular old tires, that's why I switched). Before you ask - it's not a problem with the wheel or anything, I've had it checked. I've never had a flat tire in the countryside trips, though. It's always on broken glass some jerks throw at bike lanes in bi…

I dug several mm long glass shards out of my Schwalbe Marathon+ without them penetrating to the tube, but if you want solid rubber, you can buy it: https://tannus.com/tires/

Re: Proteus Technology: New Material Is Strong, Light and Non-Cuttable

#180

Post by ClumsyPilot »

liability wrote: post #71
mc32 wrote: post #38

Earlier quoted context omitted.

Prison cells (whose rooms are cast concrete over rebar). AT machines. Vaults, safes... Lots of things. Roll-up shutter doors... fences around construction equipment.

Not enough people are tunnelling their way out of prisons to justify the expense of building prisons out of anything like this. And it's too bulky for shutters or fences. Safes and vaults might be a good application.

> Not enough people are tunnelling their way out of prison

If i am ever in jail i am going to correct this issue

Post reply on HN