Bike Locks/Bike Theft
#26
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Make a hollow metal bar, inside filled with pepper spray and dye. When they cut through the bar; pain and ID
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#27
Newbie
How about a different approach? A lock that integrates with the bike from the factory (think car lock)? It can be on the steerer or crank/ bottom bracket or fork/ hub. The bike won’t be rideable when locked and if you destroy the lock with brute force you destroy the bike.
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#28
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Recently The Oregonian ran an article about a new trend in bike thieves cutting through bike racks to steal bikes. Has that been an issue you’ve seen with bike racks in Minneapolis? Are the racks Portland uses similar to the Dero racks the City of Minneapolis uses?
Recently The Oregonian ran an article about a new trend in bike thieves cutting through bike racks to steal bikes. Has that been an issue you’ve seen with bike racks in Minneapolis? Are the racks Portland uses similar to the Dero racks the City of Minneapolis uses?
Andy: I think we’ve been pretty lucky in the Twin Cities metro area. We haven’t been contacted much at all with these types of issues here. Based on the photo from the article, a pipe cutter was the tool used to steal the bike. (Counter to the article’s assumption, the cut is too smooth to be a saw.) Portland uses a bike rack manufacturer in the Northwest that uses a lighter gauge material for their racks – they probably used this based on cost issues. The bike racks that Dero manufactures use a heavier duty schedule 40 steel pipe. Both racks are susceptible to a pipe cutter, but a heavier duty rack will take longer to cut and may deter bike thieves. Another issue is that the bike racks use round pipe, which can be cut by a pipe cutter. Any racks that are inverted-U racks or hoop racks made with round pipe are at risk to pipe cutting. The Dero Bike Hitch Rack that the City of Minneapolis uses won’t work with pipe cutters, since the pipe cutting tool can’t spin all the way around the locking arms (this is good news).
One of the suggestions in that article is filling bike racks with concrete to make them more secure. Is that something Dero has considered, and what other technologies might work better to stop bike thieves?
Andy: We’ve experimented with filling our Hoop Racks internally with concrete and that was a nightmare. It’s not economical, takes a lot of labor and time, and has to be done onsite at the installation location. A better option is to weld a chain on the inside of an inverted-U bike rack from end to end. We have manufactured a large amount bike racks for the City of Los Angeles and have included a chain welded to the inside of the rack. Pipe cutters can cut the outer pipe, but won’t be able to get through the interior chain. The chain acts as a separate safety feature.
#29
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#30
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#32
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#33
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A better option is to weld a chain on the inside of an inverted-U bike rack from end to end. We have manufactured a large amount of bike racks for the City of Los Angeles and have included a chain welded to the inside of the rack. Pipe cutters can cut the outer pipe, but won’t be able to get through the interior chain. The chain acts as a separate safety feature.
#34
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Ladies and gentlemen: the SkunkLock! A charge card & internet connection and one can be delivered to your door.
I was imagining a hardened steel U with a magnesium core. You cut it with an angle grinder, it catches fire! Hmph. Probably burn through your tire, though.
I was imagining a hardened steel U with a magnesium core. You cut it with an angle grinder, it catches fire! Hmph. Probably burn through your tire, though.
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#36
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Real-world experiences, not just hearsay and internet stories? My personal experience is that combined with good locking technique and being smart about where and when I locked my bike up in public, I used the same Citadel U-lock from 1977 until just a few years ago when I retired and quit commuting.
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#37
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Real-world experiences, not just hearsay and internet stories? My personal experience is that combined with good locking technique and being smart about where and when I locked my bike up in public, I used the same Citadel U-lock from 1977 until just a few years ago when I retired and quit commuting.
/thread
#38
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I recently looked at the market to replace this:
Small light and I can pick it in 10 seconds.
I want a combination lock because I haven’t lost my mind (yet).
I use this when I’m not carrying U-lock. I use it when stepping away for a moment. I understand the risk.
I am now using a 40 year old Master classic rotary with a cable because I couldn’t find anything better on the market.
To summarize, a light , compact combination lock that lets me look away for 30 seconds..that’s what I’d buy at a $40 price point.
Small light and I can pick it in 10 seconds.
I want a combination lock because I haven’t lost my mind (yet).
I use this when I’m not carrying U-lock. I use it when stepping away for a moment. I understand the risk.
I am now using a 40 year old Master classic rotary with a cable because I couldn’t find anything better on the market.
To summarize, a light , compact combination lock that lets me look away for 30 seconds..that’s what I’d buy at a $40 price point.
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#39
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So probably getting hit is more likely for me than theft.
#40
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https://www.bbc.co.uk/news/uk-england-london-35669181
And I've seen plenty bolted to the ground, which wouldn't be hard to loosen. I guess nothing is truly safe.
#41
Senior Member
I discovered the hard way that the lock that worked in the suburbs was not up to the job in Center City Philadelphia the hard way, about 15 year ago now. (Side note: if you ever see someone riding the subway carrying helmet and panniers, but no bike in sight -- offer your condolences.) Since then, I have often pulled rank to be able to bring my bike into my office.
Locking the bike on tours is a different issue -- I leave it out of my sight for less time, but if it gets taken I'm in a deeper hole.
Current lock is an Abus Bordo. Always looking for something better.
Locking the bike on tours is a different issue -- I leave it out of my sight for less time, but if it gets taken I'm in a deeper hole.
Current lock is an Abus Bordo. Always looking for something better.
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#42
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I still come back to my default position. If the lock is so successful at keeping the bike from being stolen than the thief might conclude:
"If I can't have this bike, neither can the owner" as he/she takes the angle grinder to the top tube or downtube or forks. U-lock takes 15 seconds, chain 20 seconds, cable a snip. Top tube 2 seconds.
"If I can't have this bike, neither can the owner" as he/she takes the angle grinder to the top tube or downtube or forks. U-lock takes 15 seconds, chain 20 seconds, cable a snip. Top tube 2 seconds.
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#43
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This project is going to be real hard. Maybe better to design a home assembled proximity device from economical off the shelf items to be used in addition to a lock.
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#44
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I still come back to my default position. If the lock is so successful at keeping the bike from being stolen than the thief might conclude:
"If I can't have this bike, neither can the owner" as he/she takes the angle grinder to the top tube or downtube or forks. U-lock takes 15 seconds, chain 20 seconds, cable a snip. Top tube 2 seconds.
"If I can't have this bike, neither can the owner" as he/she takes the angle grinder to the top tube or downtube or forks. U-lock takes 15 seconds, chain 20 seconds, cable a snip. Top tube 2 seconds.
Last edited by indyfabz; 03-27-22 at 06:43 PM.
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#45
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#49
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Bro you're really mad about a high-school student doing survey work like every other professional in the industry. Who hurt you? Nobody else is mad why are you go ride and don't be mad over something so small! Just trying to get some input from such a big community.
(You probably ride a lefty don't you)
(You probably ride a lefty don't you)
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#50
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I’m not an engineer, but it would seem that using a material that can be compressed and contains a ceramic/aluminum oxide to defeat cutting is what I would pursue.
While no lock is foolproof, being able to compress material from 13mm to 2mm without breaking and integrating grit the same hardness as grinding wheels, would at least slow down some thieves.
John
While no lock is foolproof, being able to compress material from 13mm to 2mm without breaking and integrating grit the same hardness as grinding wheels, would at least slow down some thieves.
John