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#11
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Homemade U-lock rack support
On 2018-08-13 14:46, Jeff Liebermann wrote:
On Mon, 13 Aug 2018 12:13:05 -0700, Joerg wrote: On 2018-08-13 11:34, Jeff Liebermann wrote: On Mon, 13 Aug 2018 10:29:44 -0700, Joerg wrote: On 2018-08-13 08:27, Tanguy Ortolo wrote: Frank Krygowski, 2018-08-13 17:11+0200: Nice. If the appearance was bothersome, you could use a black tube held in place with black zip ties. Black tube, yes, if I can find some, but I only ever saw white tube in hardware stores. Black zip ties, no, bad idea, as they let the tube slide on the sides. I would rather use some black tape. Zip ties are also bad in terms of reliability. It seems UV rays embrittle them and then they just fall off. A while ago I chased and stopped an MTB rider whose rear brake hose had come loose because of that and was chafing on the rear wheel. Luckily I always have a snippet of wire in my tool kit. Zip ties, too, but those only for temporary fixes. You can buy UV resistant zip ties. They're loaded with carbon black that blocks UV. However, not all such zip ties are equally resistant to UV. Some of the cheap junk has much less than the recommended 2% carbon black. After having an antenna installation fall apart in about a year due to crumbling zip ties, I bought some that are genuine Polyamide 6.6 UV resistant per ASTM D-4066PA411. No problems so far after about 5 years: https://www.hellermanntyton.us/bundling-securing/cable-ties/standard-cable-ties-special-materials/ https://www.hellermanntyton.us/resources/materials https://www.solarpowerworldonline.com/2016/03/not-all-uv-rated-cable-ties-have-long-lifespans-on-solar-projects/ The one that popped was the stock tie from a high-Dollar Specialized MTB. I can't imagine them being cheap on zip ties. Metal is generally better. I can believe it, if the big $$$$ specialized MTB builder trusted the data sheets without testing. I had the same problem. The junk I bought at the local hardware store said "UV resistant" on the package, but wasn't. In order to test, polyamide (nylon) 6.6 should dissolve in sulfuric acid. (I haven't tried this). The residue should be mostly carbon black. By weighing everything, you can get a rough guess for how much carbon black was used. https://www.researchgate.net/post/What_is_the_solvent_to_solubilize_the_Polyamideexp ect_HFIP Or, pay the price and use a proper tester: http://www.testing-instruments.com/carbon-black-content-apparatus/ Or just use wire and be done with it. Not every little job has to turn into a science experiment :-) An experienced dirt bike rider told me that only a few things are essential. Rum, duct tape, bailing wire. In that order. -- Regards, Joerg http://www.analogconsultants.com/ |
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#12
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Homemade U-lock rack support
On 14/08/18 01:27, Tanguy Ortolo wrote:
Frank Krygowski, 2018-08-13 17:11+0200: Nice. If the appearance was bothersome, you could use a black tube held in place with black zip ties. Black tube, yes, if I can find some, but I only ever saw white tube in hardware stores. Try looking in the electrical section. There should be grey and orange as well. Make your choice and pick up a can of black spray paint as well. Problem solved. Alternatively, check out old style cheapo bicycle pumps, buy a black one and cut off top and bottom to length desired. |
#13
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Homemade U-lock rack support
On Monday, August 13, 2018 at 1:39:04 PM UTC-7, Joerg wrote:
On 2018-08-13 13:12, Frank Krygowski wrote: On Monday, August 13, 2018 at 3:13:06 PM UTC-4, Joerg wrote: On 2018-08-13 11:34, Jeff Liebermann wrote: On Mon, 13 Aug 2018 10:29:44 -0700, Joerg wrote: On 2018-08-13 08:27, Tanguy Ortolo wrote: Frank Krygowski, 2018-08-13 17:11+0200: Nice. If the appearance was bothersome, you could use a black tube held in place with black zip ties. Black tube, yes, if I can find some, but I only ever saw white tube in hardware stores. Black zip ties, no, bad idea, as they let the tube slide on the sides. I would rather use some black tape. Zip ties are also bad in terms of reliability. It seems UV rays embrittle them and then they just fall off. A while ago I chased and stopped an MTB rider whose rear brake hose had come loose because of that and was chafing on the rear wheel. Luckily I always have a snippet of wire in my tool kit. Zip ties, too, but those only for temporary fixes. You can buy UV resistant zip ties. They're loaded with carbon black that blocks UV. However, not all such zip ties are equally resistant to UV. Some of the cheap junk has much less than the recommended 2% carbon black. After having an antenna installation fall apart in about a year due to crumbling zip ties, I bought some that are genuine Polyamide 6.6 UV resistant per ASTM D-4066PA411. No problems so far after about 5 years: https://www.hellermanntyton.us/bundling-securing/cable-ties/standard-cable-ties-special-materials/ https://www.hellermanntyton.us/resources/materials https://www.solarpowerworldonline.com/2016/03/not-all-uv-rated-cable-ties-have-long-lifespans-on-solar-projects/ The one that popped was the stock tie from a high-Dollar Specialized MTB. I can't imagine them being cheap on zip ties. Metal is generally better. When I wrote my post above, I considered ending with "Of course, Joerg would use hose clamps." Now I'm sorry I resisted that impulse. No hose clamps, wire :-) a. Costs less that a cable tie. b. Lasts almost forever. Well, at least longer than you and I will. c. Much less visible. d. Leaving the ends longer can provide extra wire for stranded cyclists. Extra wire for stranded cyclists? I have yet to encounter a stranded cyclist who was in need of wire. For what? A roach clip? "Hey there mister, say, could you spare some wire? I sure could use some wire, mister." You'd be better off carrying some 5M hex screws. You already have rope. you should carry some extra wheels. https://janheine.files.wordpress.com...g_to_cross.jpg At what point is your bike so trashy that you would mount a U-lock carrier with wire -- and not even a hose clamp. -- Jay Beattie. |
#14
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Homemade U-lock rack support
On 8/13/2018 1:29 PM, Joerg wrote:
On 2018-08-13 08:27, Tanguy Ortolo wrote: Frank Krygowski, 2018-08-13 17:11+0200: Nice. If the appearance was bothersome, you could use a black tube held in place with black zip ties. Black tube, yes, if I can find some, but I only ever saw white tube in hardware stores. Black zip ties, no, bad idea, as they let the tube slide on the sides. I would rather use some black tape. Zip ties are also bad in terms of reliability. It seems UV rays embrittle them and then they just fall off. A while ago I chased and stopped an MTB rider whose rear brake hose had come loose because of that and was chafing on the rear wheel. Luckily I always have a snippet of wire in my tool kit. Zip ties, too, but those only for temporary fixes. Hmm. Well, I suppose that failure is possible, but: My wife has some wire baskets filled with flowers hanging from a steel balcony railing that I fabricated long ago. I attached those baskets using black zip ties at least three years ago, IIRC. Those are in full sun for about half the day. They're still fine. I suppose I could pass out helmets to people sitting in the patio below the balcony... -- - Frank Krygowski |
#15
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Homemade U-lock rack support
On 8/13/2018 4:39 PM, Joerg wrote:
On 2018-08-13 13:12, Frank Krygowski wrote: On Monday, August 13, 2018 at 3:13:06 PM UTC-4, Joerg wrote: On 2018-08-13 11:34, Jeff Liebermann wrote: On Mon, 13 Aug 2018 10:29:44 -0700, Joerg wrote: On 2018-08-13 08:27, Tanguy Ortolo wrote: Frank Krygowski, 2018-08-13 17:11+0200: Nice. If the appearance was bothersome, you could use a black tube held in place with black zip ties. Black tube, yes, if I can find some, but I only ever saw white tube in hardware stores. Black zip ties, no, bad idea, as they let the tube slide on the sides. I would rather use some black tape. Zip ties are also bad in terms of reliability. It seems UV rays embrittle them and then they just fall off. A while ago I chased and stopped an MTB rider whose rear brake hose had come loose because of that and was chafing on the rear wheel. Luckily I always have a snippet of wire in my tool kit. Zip ties, too, but those only for temporary fixes. You can buy UV resistant zip ties.Â* They're loaded with carbon black that blocks UV.Â* However, not all such zip ties are equally resistant to UV.Â* Some of the cheap junk has much less than the recommended 2% carbon black.Â* After having an antenna installation fall apart in about a year due to crumbling zip ties, I bought some that are genuine Polyamide 6.6 UV resistant per ASTM D-4066PA411.Â* No problems so far after about 5 years: https://www.hellermanntyton.us/bundling-securing/cable-ties/standard-cable-ties-special-materials/ https://www.hellermanntyton.us/resources/materials https://www.solarpowerworldonline.com/2016/03/not-all-uv-rated-cable-ties-have-long-lifespans-on-solar-projects/ The one that popped was the stock tie from a high-Dollar Specialized MTB. I can't imagine them being cheap on zip ties. Metal is generally better. When I wrote my post above, I considered ending with "Of course, Joerg would use hose clamps." Now I'm sorry I resisted that impulse. No hose clamps, wire :-) a. Costs less that a cable tie. Golly, so THAT'S how I can make my retirement money last! "Honey, we CAN buy a little meat this week, thanks to Joerg!" :-) b. Lasts almost forever. Well, at least longer than you and I will. So it's not carbon steel wire? Hmm... titanium? Or just stainless? I know galvanizing doesn't last forever. c. Much less visible. Oh, so it's black painted wire! But that seems like a bit of fuss. d. Leaving the ends longer can provide extra wire for stranded cyclists. If you want extra wire (to truss up mountain lions?) wouldn't you just carry some in your bike bag? Honestly, I do carry something like that in my bike bag. I carry one or two zip ties. But I don't have any visions of using them to rescue stranded cyclists. I'm obviously not as heroic as you. -- - Frank Krygowski |
#16
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Homemade U-lock rack support
Tosspot, 2018-08-13 21:01+0200:
I've been very happy with these; https://www.amazon.com/Abus-EaZy-Bra.../dp/B003F88PY2 Not bad, it looks quite similar to what I had before, that lasted about two years. It is subject to torque from the lock weight as well. And it is quite expensive too! Just one remark, if you buy two of them, you should be able to secure your lock from two points, eliminating most of the torque and allowing the supports to last more than twice as long before breaking. -- Tanguy |
#17
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Homemade U-lock rack support
On 2018-08-13 19:07, jbeattie wrote:
On Monday, August 13, 2018 at 1:39:04 PM UTC-7, Joerg wrote: On 2018-08-13 13:12, Frank Krygowski wrote: On Monday, August 13, 2018 at 3:13:06 PM UTC-4, Joerg wrote: On 2018-08-13 11:34, Jeff Liebermann wrote: On Mon, 13 Aug 2018 10:29:44 -0700, Joerg wrote: On 2018-08-13 08:27, Tanguy Ortolo wrote: Frank Krygowski, 2018-08-13 17:11+0200: Nice. If the appearance was bothersome, you could use a black tube held in place with black zip ties. Black tube, yes, if I can find some, but I only ever saw white tube in hardware stores. Black zip ties, no, bad idea, as they let the tube slide on the sides. I would rather use some black tape. Zip ties are also bad in terms of reliability. It seems UV rays embrittle them and then they just fall off. A while ago I chased and stopped an MTB rider whose rear brake hose had come loose because of that and was chafing on the rear wheel. Luckily I always have a snippet of wire in my tool kit. Zip ties, too, but those only for temporary fixes. You can buy UV resistant zip ties. They're loaded with carbon black that blocks UV. However, not all such zip ties are equally resistant to UV. Some of the cheap junk has much less than the recommended 2% carbon black. After having an antenna installation fall apart in about a year due to crumbling zip ties, I bought some that are genuine Polyamide 6.6 UV resistant per ASTM D-4066PA411. No problems so far after about 5 years: https://www.hellermanntyton.us/bundling-securing/cable-ties/standard-cable-ties-special-materials/ https://www.hellermanntyton.us/resources/materials https://www.solarpowerworldonline.com/2016/03/not-all-uv-rated-cable-ties-have-long-lifespans-on-solar-projects/ The one that popped was the stock tie from a high-Dollar Specialized MTB. I can't imagine them being cheap on zip ties. Metal is generally better. When I wrote my post above, I considered ending with "Of course, Joerg would use hose clamps." Now I'm sorry I resisted that impulse. No hose clamps, wire :-) a. Costs less that a cable tie. b. Lasts almost forever. Well, at least longer than you and I will. c. Much less visible. d. Leaving the ends longer can provide extra wire for stranded cyclists. Extra wire for stranded cyclists? I have yet to encounter a stranded cyclist who was in need of wire. For what? As I said a fallen off zip tie from a hydraulic hose, for example. I also have zip ties with me for other purposes but they won't fit through those lugs. ... A roach clip? "Hey there mister, say, could you spare some wire? I sure could use some wire, mister." You'd be better off carrying some 5M hex screws. You already have rope. you should carry some extra wheels. https://janheine.files.wordpress.com...g_to_cross.jpg At what point is your bike so trashy that you would mount a U-lock carrier with wire -- and not even a hose clamp. My bikes always have a certain trashiness look. Not because of the tools as they are neatly packed in a belt pack which rides along inside the right pannier. That also carries my wallet, cell phone, keys et cetera so during a stop I can whip it out and strap it on. However, the bikes always have caked mud under the tubes. Cleaning won't make much sense because a couple rides later it would be back. The upside of a certain trashiness level is that it makes a bike unattractive to thieves. -- Regards, Joerg http://www.analogconsultants.com/ |
#18
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Homemade U-lock rack support
On 2018-08-13 19:19, Frank Krygowski wrote:
On 8/13/2018 4:39 PM, Joerg wrote: On 2018-08-13 13:12, Frank Krygowski wrote: On Monday, August 13, 2018 at 3:13:06 PM UTC-4, Joerg wrote: On 2018-08-13 11:34, Jeff Liebermann wrote: On Mon, 13 Aug 2018 10:29:44 -0700, Joerg wrote: On 2018-08-13 08:27, Tanguy Ortolo wrote: Frank Krygowski, 2018-08-13 17:11+0200: Nice. If the appearance was bothersome, you could use a black tube held in place with black zip ties. Black tube, yes, if I can find some, but I only ever saw white tube in hardware stores. Black zip ties, no, bad idea, as they let the tube slide on the sides. I would rather use some black tape. Zip ties are also bad in terms of reliability. It seems UV rays embrittle them and then they just fall off. A while ago I chased and stopped an MTB rider whose rear brake hose had come loose because of that and was chafing on the rear wheel. Luckily I always have a snippet of wire in my tool kit. Zip ties, too, but those only for temporary fixes. You can buy UV resistant zip ties. They're loaded with carbon black that blocks UV. However, not all such zip ties are equally resistant to UV. Some of the cheap junk has much less than the recommended 2% carbon black. After having an antenna installation fall apart in about a year due to crumbling zip ties, I bought some that are genuine Polyamide 6.6 UV resistant per ASTM D-4066PA411. No problems so far after about 5 years: https://www.hellermanntyton.us/bundling-securing/cable-ties/standard-cable-ties-special-materials/ https://www.hellermanntyton.us/resources/materials https://www.solarpowerworldonline.com/2016/03/not-all-uv-rated-cable-ties-have-long-lifespans-on-solar-projects/ The one that popped was the stock tie from a high-Dollar Specialized MTB. I can't imagine them being cheap on zip ties. Metal is generally better. When I wrote my post above, I considered ending with "Of course, Joerg would use hose clamps." Now I'm sorry I resisted that impulse. No hose clamps, wire :-) a. Costs less that a cable tie. Golly, so THAT'S how I can make my retirement money last! "Honey, we CAN buy a little meat this week, thanks to Joerg!" :-) b. Lasts almost forever. Well, at least longer than you and I will. So it's not carbon steel wire? Hmm... titanium? Or just stainless? I know galvanizing doesn't last forever. Take a look at an old, old fence somewhere near a ghost town. That's how it's done. c. Much less visible. Oh, so it's black painted wire! But that seems like a bit of fuss. No, thinner. d. Leaving the ends longer can provide extra wire for stranded cyclists. If you want extra wire (to truss up mountain lions?) wouldn't you just carry some in your bike bag? They chafe and poke. Not very practical. Honestly, I do carry something like that in my bike bag. I carry one or two zip ties. But I don't have any visions of using them to rescue stranded cyclists. I'm obviously not as heroic as you. I carry some zip ties, too. I have only helped a few stranded road bikers but a lot of mountain bikers. Out on the trails stuff breaks. Some people laughed about my little first aid kit that I also carry. Only a few weeks after I bought it there was this kid that didn't realize that Razor scooter wheels aren't MTB wheels, won't go up a curb and ... -- Regards, Joerg http://www.analogconsultants.com/ |
#19
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Homemade U-lock rack support
On 2018-08-13 19:10, Frank Krygowski wrote:
On 8/13/2018 1:29 PM, Joerg wrote: On 2018-08-13 08:27, Tanguy Ortolo wrote: Frank Krygowski, 2018-08-13 17:11+0200: Nice. If the appearance was bothersome, you could use a black tube held in place with black zip ties. Black tube, yes, if I can find some, but I only ever saw white tube in hardware stores. Black zip ties, no, bad idea, as they let the tube slide on the sides. I would rather use some black tape. Zip ties are also bad in terms of reliability. It seems UV rays embrittle them and then they just fall off. A while ago I chased and stopped an MTB rider whose rear brake hose had come loose because of that and was chafing on the rear wheel. Luckily I always have a snippet of wire in my tool kit. Zip ties, too, but those only for temporary fixes. Hmm. Well, I suppose that failure is possible, but: My wife has some wire baskets filled with flowers hanging from a steel balcony railing that I fabricated long ago. I attached those baskets using black zip ties at least three years ago, IIRC. Those are in full sun for about half the day. They're still fine. I suppose I could pass out helmets to people sitting in the patio below the balcony... If your sun is like the California sun I sure would consider that after three years. I used to zip-tie sprinkler risers to rebar that I pounded into the ground, to prevent them from tilting and looking ugly. All of them, literally all of them, snapped and fell off after several years. Now it's all wire and nothing falls off. Sometimes the older methods are still best. -- Regards, Joerg http://www.analogconsultants.com/ |
#20
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Homemade U-lock rack support
On 08/14/2018 09:59 AM, Tanguy Ortolo wrote:
Tosspot, 2018-08-13 21:01+0200: I've been very happy with these; https://www.amazon.com/Abus-EaZy-Bra.../dp/B003F88PY2 Not bad, it looks quite similar to what I had before, that lasted about two years. It is subject to torque from the lock weight as well. And it is quite expensive too! Just one remark, if you buy two of them, you should be able to secure your lock from two points, eliminating most of the torque and allowing the supports to last more than twice as long before breaking. Mine has little torque as the holder is close to the balance point, but they are, as you say, bloody expensive. Mines done 3 years now. |
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