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Bicycle Security News
or maybe fake news
https://cyclingindustry.news/scienti...bike-security/ -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#2
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Bicycle Security News
On Wednesday, July 22, 2020 at 7:12:01 AM UTC-7, AMuzi wrote:
or maybe fake news https://cyclingindustry.news/scienti...bike-security/ -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 The material is real and a lock made out of that would soon teach thieves that it doesn't pay to try and break that sort of lock. |
#3
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Bicycle Security News
On Wed, 22 Jul 2020 09:11:50 -0500, AMuzi wrote:
or maybe fake news https://cyclingindustry.news/scienti...bike-security/ See https://bgr.com/2020/07/21/uncuttabl...cutting-tools/ for a demonstration of "cutting" the above material -- Cheers, John B. |
#4
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Bicycle Security News
John B. wrote:
On Wed, 22 Jul 2020 09:11:50 -0500, AMuzi wrote: or maybe fake news https://cyclingindustry.news/scienti...bike-security/ See https://bgr.com/2020/07/21/uncuttabl...cutting-tools/ for a demonstration of "cutting" the above material -- I vote fake. The description says aluminum, the sparks say steel and the grinder says soft. Not sure if the fake is intentional or accidental, but the story so far does not add up. Hope this doesn't offend too much, bob prohaska |
#5
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Bicycle Security News
On 7/22/2020 9:16 PM, bob prohaska wrote:
John B. wrote: On Wed, 22 Jul 2020 09:11:50 -0500, AMuzi wrote: or maybe fake news https://cyclingindustry.news/scienti...bike-security/ See https://bgr.com/2020/07/21/uncuttabl...cutting-tools/ for a demonstration of "cutting" the above material -- I vote fake. The description says aluminum, the sparks say steel and the grinder says soft. Not sure if the fake is intentional or accidental, but the story so far does not add up. Hope this doesn't offend too much, bob prohaska In my capacity of regularly removing 'impenetrable' locks with lost keys from bicycles, I scoff at the term 'cut proof' Here's an example. There's a cute elegant little lock with 14mm tempered aluminum shackle and body, 'can't be cut with disc grinder'. Yeah, so what? There are many methods for many materials. If the thief with a battery disc grinder is thwarted, the next guy will break it differently. Oh, and the savages are just as likely to bash in your wheels as steal your bike anyway... -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#6
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Bicycle Security News
AMuzi wrote:
On 7/22/2020 9:16 PM, bob prohaska wrote: John B. wrote: On Wed, 22 Jul 2020 09:11:50 -0500, AMuzi wrote: or maybe fake news https://cyclingindustry.news/scienti...bike-security/ See https://bgr.com/2020/07/21/uncuttabl...cutting-tools/ for a demonstration of "cutting" the above material -- I vote fake. The description says aluminum, the sparks say steel and the grinder says soft. Not sure if the fake is intentional or accidental, but the story so far does not add up. Hope this doesn't offend too much, bob prohaska In my capacity of regularly removing 'impenetrable' locks with lost keys from bicycles, I scoff at the term 'cut proof' Here's an example. There's a cute elegant little lock with 14mm tempered aluminum shackle and body, 'can't be cut with disc grinder'. Yeah, so what? There are many methods for many materials. If the thief with a battery disc grinder is thwarted, the next guy will break it differently. Modern abrasive disks are remarkably good. Add a decent battery powered drive and it's probably the best attack off the shelf. I have to admit the idea of a composite material has some merit. A mix of something hard to resist sawing and shearing plus a material that "loads up" abrasives to make grinding difficult might be resistant to quick attack. I don't know of such a combo, most metals hard enough to resist shearing won't load a wheel. Those that will load a wheel are soft enough to saw or shear. A resin-bonded SiC wheel is difficult to fend off directly. A lock material (or structure) that causes rotary tools to bind and grab is the best defense that comes to mind. I've broken lots of abrasive cutting disks that way.... For the curious, there is a YouTube channel by "Lock Picking Lawyer" where various gadgets, including bike locks, are tested. bob prohaska |
#7
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Bicycle Security News
On Thursday, July 23, 2020 at 10:37:45 PM UTC+1, bob prohaska wrote:
AMuzi wrote: On 7/22/2020 9:16 PM, bob prohaska wrote: John B. wrote: On Wed, 22 Jul 2020 09:11:50 -0500, AMuzi wrote: or maybe fake news https://cyclingindustry.news/scienti...bike-security/ See https://bgr.com/2020/07/21/uncuttabl...cutting-tools/ for a demonstration of "cutting" the above material -- I vote fake. The description says aluminum, the sparks say steel and the grinder says soft. Not sure if the fake is intentional or accidental, but the story so far does not add up. Hope this doesn't offend too much, bob prohaska In my capacity of regularly removing 'impenetrable' locks with lost keys from bicycles, I scoff at the term 'cut proof' Here's an example. There's a cute elegant little lock with 14mm tempered aluminum shackle and body, 'can't be cut with disc grinder'. Yeah, so what? There are many methods for many materials. If the thief with a battery disc grinder is thwarted, the next guy will break it differently. Modern abrasive disks are remarkably good. Add a decent battery powered drive and it's probably the best attack off the shelf. I have to admit the idea of a composite material has some merit. A mix of something hard to resist sawing and shearing plus a material that "loads up" abrasives to make grinding difficult might be resistant to quick attack. I don't know of such a combo, most metals hard enough to resist shearing won't load a wheel. Those that will load a wheel are soft enough to saw or shear. A resin-bonded SiC wheel is difficult to fend off directly. A lock material (or structure) that causes rotary tools to bind and grab is the best defense that comes to mind. I've broken lots of abrasive cutting disks that way.... For the curious, there is a YouTube channel by "Lock Picking Lawyer" where various gadgets, including bike locks, are tested. bob prohaska Depressing. I go a different way. We don't have a lot of trucks where I live, and most vans have a lot of stuff in them, so there are very few vehicles to take a bike away. I therefore merely make my bike unrideable by uncoupling the steerer shaft from the stem so that the wheel flops here, there and everywhere and becomes a danger to the would-be thief. See http://thorncyclesforum.co.uk/index.php?topic=3930.0 for a description and some images down thread. Andre Jute No reason not to bring rationality to bear on cycling as on everything else |
#8
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Bicycle Security News
On Wednesday, July 22, 2020 at 9:12:01 AM UTC-5, AMuzi wrote:
or maybe fake news https://cyclingindustry.news/scienti...bike-security/ -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 I wonder if a battery angle grinder could cut it? Andy |
#9
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Bicycle Security News
On Sat, 01 Aug 2020 12:13:18 -0700, AK wrote:
On Wednesday, July 22, 2020 at 9:12:01 AM UTC-5, AMuzi wrote: or maybe fake news https://cyclingindustry.news/scienti...material-well- suited-to-bike-security/ -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 I wonder if a battery angle grinder could cut it? I thought JohnB posted a link showing someone cutting into a hollow box it was claimed to be made of this metal. If so, it is only of increased resistance and quickly destroys the cutting disk. They would just ave to go armed with a stack of replacement disks as well as the angle grinder. And probably a replacement battery or two. |
#10
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Bicycle Security News
On Sat, 1 Aug 2020 12:13:18 -0700 (PDT), AK
wrote: On Wednesday, July 22, 2020 at 9:12:01 AM UTC-5, AMuzi wrote: or maybe fake news https://cyclingindustry.news/scienti...bike-security/ -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 I wonder if a battery angle grinder could cut it? Andy There was a youtube of cutting a plate made from the "stuff" and the angle grinder seemed to cut it pretty well but the wheel wore very rapidly. https://bgr.com/2020/07/21/uncuttabl...cutting-tools/ But I wonder what happens when you attack it with a 4 ft set of bolt cutters? -- Cheers, John B. |
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