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#81
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SIX thousand and FIVE hundred lumens !!!!!!!!!!
On Sat, 06 Oct 2018 21:13:13 +0200, Emanuel Berg
wrote: Jeff Liebermann wrote: I prefer "Learn by Destroying". The motto of the college that finally graduated me was "Learn by Doing". I thought a small change was more appropriate. It really means that if you haven't taken it apart, broken it, fixed it, and put it back together working, you don't understand it. You probably will not understand how lighting works until after you learn to make the basic measurements and then destroy a bicycle light by tearing it apart and trying to "improve" it. I'm quite serious about this because that's what I had to do before I understood how lighting works. This doesn't work as well as it used to. Say that you are a kid today. Good luck getting your parents permission to destroy your TV. Even more good look is needed for you to put it back together. Or a modern mower. Or a modern phone. Or a modern whatever. Wrong. The most difficult part of repairing anything is collecting the required courage to jump into doing something new or something you've never done before. It's also easier to obtain forgiveness than to obtain permission. In the US, we have the "maker" movement. What they make and how they make it covers an impossibly large range of devices and methods. I've helped some of the neighbors kids with their assorted projects and have been impressed. A few get into fixing things, mostly to save money. Replacing digitizers and screens in smartphones and tablets is not easy and certainly has its risks, but educational value and cost savings are substantial. Way back when I was an aspiring juvenile delinquent, I wanted a car. My parents claimed poverty and refused. However, I was allowed to borrow my mother's car. After a few months, I had forgotten to change the oil and blew up the engine. My fathers answer was simple. "You wanted a car, and there it is. All you need to do now is fix it". At this point, I didn't know much about automobile mechanics and repair. I learned quickly and did a ring and valve job on a straight 6 cylinder car in my parents driveway. It took about 3 months. I only made one mistake (mostly because I ran out of money for buying specialized tools) which eventually killed the engine, again. Oops. The experience of scattering an automobile engine all over the driveway, fixing it, and putting it back together, combined with other mechanical experience (sewing machine mechanic) is what I attribute much of my current level of technical expertise. You have to start on such adventures when you're young because learning such things becomes much more difficult as we get older. The key thing is to NOT have any fear of doing something new and different. If that's your problem or your excuse, then you've lost even before you start. I like to photograph what I tear apart and reverse engineer. For example, in the bicycle section: Cygolite Streak 280 headlight: http://www.learnbydestroying.com/jeffl/pics/bicycles/Cygolite%20Streak%20280/index.html K1009 headlight: http://www.learnbydestroying.com/jeffl/pics/bicycles/K1009%20light/index.html Also, the iFixit site has a large number of teardowns and repair guides. You might learn something reading them, but you'll learn much more by finding something worth investigating, take it apart, take photos, and write a repair guide: https://www.ifixit.com -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
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#82
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SIX thousand and FIVE hundred lumens !!!!!!!!!!
On Sat, 06 Oct 2018 12:44:53 -0700, Jeff Liebermann
wrote: Also, the iFixit site has a large number of teardowns and repair guides. You might learn something reading them, but you'll learn much more by finding something worth investigating, take it apart, take photos, and write a repair guide: https://www.ifixit.com Mo https://www.ifixit.com/Search?doctyp...query=bicycle? -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#83
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SIX thousand and FIVE hundred lumens !!!!!!!!!!
Jeff Liebermann wrote:
This doesn't work as well as it used to. Say that you are a kid today. Good luck getting your parents permission to destroy your TV. Even more good look is needed for you to put it back together. Or a modern mower. Or a modern phone. Or a modern whatever. Wrong. Repairing a car, TV, radio, mower, phone, etc., is much more difficult today than in 1975. Especially if you are to destroy/disassemble it first. My granddad had a professional repair shop, not like my cloak-and-dagger stuff. At this shop, they did absolutely *everything*. Bikes, cars, boats, radios, phones, TVs, you name it. Good luck finding such a shop today with a couple of guys being able to do all that with the usual set of everyday tools and a very small set of machines. Is have visited this shop and organized it, cleaned every tool, thrown away garbage, and all. What remains is good stuff, but still just the common stuff. Except for the electronics stuff, which I know nothing about, we had pretty much the same gear, him and I. The only thing he had that I didn't were a bunch of impact drivers. Other that that there were just sockets, combination spanners, different types of hammers, and so on. And with this, he solved problems in a range that's unthinkable today. -- underground experts united http://user.it.uu.se/~embe8573 |
#84
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SIX thousand and FIVE hundred lumens !!!!!!!!!!
On Sat, 06 Oct 2018 07:40:47 -0700, Joerg
wrote: On 2018-10-05 08:33, Radey Shouman wrote: Joerg writes: On 2018-10-04 18:13, Radey Shouman wrote: Joerg writes: On 2018-10-04 14:43, Radey Shouman wrote: Frank Krygowski writes: On 10/4/2018 2:12 PM, Joerg wrote: On 2018-10-04 10:40, Frank Krygowski wrote: On 10/4/2018 11:02 AM, Joerg wrote: On 2018-10-01 15:14, wrote: http://reviews.mtbr.com/magicshine-l...2018-interbike The beloved Magicshine brings us what we finally need in bike lights. Thanks to all the gods. 6500 lumens! I think you can have either 5000 or 1500 or all 6500 lumens. Thankfully now we will not only be able to blind everyone else on the road or trail, but we can now cause their eyeballs to burst into flames and maybe hopefully their heads will also explode. Yeah!!!!!! This one for their rear light is weird, quote "A sleep mode is triggered after one minute of inaction to save power, any vibration will immediately re-activate the unit". So the light will go out while waiting at an intersection? Really? Nobody raised their hand during the design review? Was there even a design review? First, their definition of "sleep mode" may not be "goes out." It could, I suppose, just become much dimmer. In any case, it would be easy enough to jiggle the bike a bit to turn it back on. Not very smart on the part of the design engineers. But it's probably not necessary. Ohio law specifically permits lights that go out when the bike is stationary, ... Not a smart decision by the lawmakers. ... and there's never been a report of a death or serious injury caused by that feature. Grandpa drove without a seat belt all his life and never go hurt, so ... Grandpa also rode his bicycle without a six foot tall safety flag, a siren, a bell constantly and automatically ringing every time he moved, pads on his knees, pads on his elbows, body armor protecting his spine. Why are you not using all those measures? (Actually, maybe you are. With you, we never know.) BTW, it even happens from the front, even by police officers: https://fox2now.com/2018/07/30/polic...hone-in-video/ Nothing can replace bright light other than even brighter lights. Which both of my bikes have. Joerg, you're the master of the worldwide search for the vanishingly rare exception. That is NOT a common crash type, as any dispassionate search of the literature would shoe. And you have no evidence that your daytime headlight would have prevented it. Looks like the video has been taken down, at least fox2now.com can't find it. Works fine here. Works for me now, no more "video unavailable". ... The accident happened in broad daylight, no vehicles save the cop SUV and the cyclist visible for miles, cyclist waiting at an intersection, I think for a stop sign. Total f*up on the part of the cop, who was more or less apologetic. A daytime running light would not have helped. Not true. I clearly found that drivers notice me much better with bright lights. Even in the corner of their eyes is enough because it "distracts" them in a good way. All it takes is noticing a cyclist a second or two earlier and a collision can be avoided. Seriously? The cop would have looked up from his phone if only the cyclist had had a light? Sounds like magic. Easy to try. While distracted with some chore in your home, have someone walk towards you pointing a bright but not blinding LED flashlight. It works. A human eye is not insensitive in the directions where one does not look, just less sensitive. The "muffling effect" needs to be overcome and intense light is just about the only method to achieve that. This wasn't inside, it was outside in bright daylight, looked like hardly a cloud in the sky. Try this in daylight. It works. ... A really bright light is required to make much difference in that case. Bingo! Now you know why I have bright lights on my bikes. I experienced it again yesterday. I had to ride through city streets for many miles, partially at max speed. With the light fully on nobody cut into my path. Without lights that is different. Other clue: You are driving a car, looking ahead into traffic as you are supposed to do. The dashboard becomes largely unnoticed except for the occasional glance at the speedometer. However, when the yellow check engine light, the red oil pressure light, the overtemp light or the low fuel light comes on it is immediately noticed. Same if someone behind you flashes their headlights even while you aren't looking into the rear view mirror. That only happens if you have the habit, perhaps not completely conscious, of scanning the dashboard. How do you know it's "immediate"? You notice it when you notice it, and if it's 10 seconds after the event that's not a big problem, unlike the case for traffic on the road. If bright enough or if a less bright light in flashing mode I see that immediately. An airline pilot could even lose his license if he didn't. If bright enough... that is exactly what I said, isn't it. But a great many cars do not have bright warning lights. As for airline pilots... I can't speak for the airlines but USAF bombers have a very bright master warning light located at eye level on the instrument panel that comes on if any of the individual warring lights are illuminated. See https://en.wikipedia.org/wiki/Annunciator_panel "More complicated aircraft will feature "Master Warning" and "Master Caution" lights/switches. In the event of any red or yellow annunciator being activated, the yellow or red master light, usually located elsewhere in the pilot's line of sight, will illuminate. In most installations they will flash and an audible alert will accompany them. These "masters" will not stop flashing until they have been acknowledged, usually by pressing the light itself" Yet another one: Think about the reason why approaching emergency vehicles have very bright flashing lights. In my world they usually turn on their sirens when approaching busy intersections, especially if they intend to blow the light. When they approach from far up front or behind I am pulled over to the shoulder and stopped before they even get there, as is required by our law. Same for the drivers in front and behind me. The siren is only heard way later and often too late. IMHO if someone only notices an approaching fast police cruiser when they hear the siren they should not have a driver's license. There is a reason why DRL have been mandatory on US motorcycles for a long time. -- Cheers, John B. |
#85
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SIX thousand and FIVE hundred lumens !!!!!!!!!!
On Sat, 06 Oct 2018 08:11:56 -0700, Joerg
wrote: On 2018-10-05 09:51, jbeattie wrote: On Friday, October 5, 2018 at 7:28:43 AM UTC-7, Joerg wrote: On 2018-10-04 18:13, Radey Shouman wrote: Joerg writes: On 2018-10-04 14:43, Radey Shouman wrote: [...] ... The accident happened in broad daylight, no vehicles save the cop SUV and the cyclist visible for miles, cyclist waiting at an intersection, I think for a stop sign. Total f*up on the part of the cop, who was more or less apologetic. A daytime running light would not have helped. Not true. I clearly found that drivers notice me much better with bright lights. Even in the corner of their eyes is enough because it "distracts" them in a good way. All it takes is noticing a cyclist a second or two earlier and a collision can be avoided. Seriously? The cop would have looked up from his phone if only the cyclist had had a light? Sounds like magic. Easy to try. While distracted with some chore in your home, have someone walk towards you pointing a bright but not blinding LED flashlight. It works. A human eye is not insensitive in the directions where one does not look, just less sensitive. The "muffling effect" needs to be overcome and intense light is just about the only method to achieve that. Other clue: You are driving a car, looking ahead into traffic as you are supposed to do. The dashboard becomes largely unnoticed except for the occasional glance at the speedometer. However, when the yellow check engine light, the red oil pressure light, the overtemp light or the low fuel light comes on it is immediately noticed. Same if someone behind you flashes their headlights even while you aren't looking into the rear view mirror. Yet another one: Think about the reason why approaching emergency vehicles have very bright flashing lights. Now imagine all of these riders with lights and sirens: https://d3n8a8pro7vhmx.cloudfront.ne...png?1428427634 This is the daily commuter traffic into downtown. Now put all those people on the two-way cycle track on my way into work. https://bikeportland.org/wp-content/...ansit-bend.jpg Now live with that. As I've written several times, bright lights are not needed on bike paths. I turn them off there during the day. They are also not needed when there are lots of cyclists (safety in numbers). It's different out here, this is not Portland, Amsterdam or Copenhagen. Solid white lights in bright sunshine are almost universally irrelevant and annoying to other cyclists and drivers. No, they are not. Why do you think motorcycles have mandatory DRL? Just for fun? ... I see jerseys and body shape long before I register the light. That is totally contrary to my experience and that of just about anyone I know. ... And BTW, having driven ambulance for six years, I spent plenty of time sitting behind cars with my deafening Federal Q2B pegged before the dopey driver turned down the music and realized I was sitting there -- and then he freaks out, hits the gas, goes into the intersection and gets whacked. It can be a sh** show. Whatever giant light, siren, calliope, marching band you claim will save your life can only make a marginal improvement and proving that margin is hard if not impossible, and a blinding light can cause accidents or at least upset. That driver shouldn't have a license. What will really reduce accidents is being a good rider and knowing how to ride in traffic and with entering or exiting traffic. That's the problem. A lot of car drivers do not fall into that category and that is beyond my influence. What I can influence is how my ship is lit, so I do that. No you can't. Marine vessels must adhere to very stringent international regulations for the lights that they display and the brightness of those lights. ... A DRL may help, but it is certainly not magical and is irrelevant in many situations. Lights are critical at night, obviously -- but mega lights are totally unnecessary on city streets in dry weather. What is "enough" at night varies depending on terrain, conditions, etc., but whatever is enough, it can't be blinding people. Again, my experience is very much contrary to that. And my experience seems to jibe with what national safety boards have found out about motorcycle lighting. -- Cheers, John B. |
#87
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SIX thousand and FIVE hundred lumens !!!!!!!!!!
On Sat, 06 Oct 2018 11:49:47 -0700, Joerg
wrote: On 2018-10-06 08:38, Frank Krygowski wrote: [...] Why on earth does someone riding a two lane highway with no intersections think they have to have a white light facing forward? It's a paranoia. Simple: 1. It prevents a large vehicle driver from overtake another large vehicle and then the driver seeing the cyclist when it's too late. 2. It causes oncoming motorists to see the cyclist much earlier and, for example, if a big semi comes they can pull a bit to the right so the semi can give the cyclist wide berth. As a motorist I am always glad when oncoming cyclists use DRL because it gives me lots of time to move to the right in a way that the other traffic recognizes that. I live in a country where we have a great many bright sunny days and as well, a great many motorcycles driving the wrong way on the road sides... sufficient numbers that there is an unofficial protocol for meeting them, and I can assure you that in bright summer light the small driving lights that motorcycles, according to law must display, are hardly noticeable although in the early morning or evening they do become more visible. -- Cheers, John B. |
#88
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SIX thousand and FIVE hundred lumens !!!!!!!!!!
On Saturday, October 6, 2018 at 11:59:57 AM UTC-7, Joerg wrote:
On 2018-10-06 09:14, jbeattie wrote: On Saturday, October 6, 2018 at 8:20:28 AM UTC-7, Joerg wrote: On 2018-10-05 09:21, jbeattie wrote: On Friday, October 5, 2018 at 7:31:57 AM UTC-7, Joerg wrote: On 2018-10-04 20:34, Frank Krygowski wrote: On 10/4/2018 3:34 PM, Joerg wrote: On 2018-10-04 12:18, jbeattie wrote: It takes very little light to be conspicuous at night, and it takes no additional light to be conspicuous during the day -- assuming broad daylight without cloud cover or other low-light condition. My experience is clearly different. Your experiences are almost always unique, not just different. Yet strangely, it jibes with that of our government folks. Why do you think they mandate DRL on motorcycles? And yet motorcycles are the one category of MVs in Oregon with increasing fatality rates. e.g. http://www.eastoregonian.com/eo/loca...king-this-year You of all people, having been an amulance driver, should know the reason. The reason is this behavior: https://www.youtube.com/watch?v=ZkWWVryT1UE That is the road where I was almost clipped by a motorcyclist. He didn't anticipate that there could be a mountain bike in a right turn, hugged the curve at high speed and ... "GAAAH!". I heard his engine screaming but didn't have anywhere to go because of a wall of rock to my right. He needed the full oncoming lane to get the situation somewhat under control. Imagine what would have happened if there'd been oncoming traffic. Did you have your super-bright light on? Of course. ... Did it prevent the motorcyclist from being an asshole? If not, you need a much brighter light. You need the Asshole Eliminator from Magicshine -- 60,600 lumen high rate flasher. Run it all the time. The light is for regular straight stretches of road, it won't help in tight curves. Though it might cause motorists to recognize me fractions of a second earlier. Then why are you telling us the motorcycle story if it is not to illustrate that bright DRLs are needed? If you just want to talk about assholes in cars or motorcycles, that is rather mundane and has nothing to do with lights. And your post about being seen by on-coming, passing cars on straight stretches, you seem to confuse being seen with playing chicken. I ride on country roads all the time where cars in on-coming traffic get into my lane to pass. They can see me. I'm looking right at them. They just don't care. Being that I'm not riding a 3 ton F350, I pull to the right. A magical light doesn't change that dynamic. I did a short ride today -- my legs are killing me, and I haven't been off my bike for weeks. It's overcast and rained this morning. I saw maybe thirty other cyclists on my little climbing route -- maybe two with DRLs. No deaths to report. No breathless hysterics, stranded people, incompetents with exploded tubeless tires. Totally normal, at least by Portland standards, which for you might be super scary since I'm riding on city streets at full speed! Eeek! -- Jay Beattie. |
#89
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SIX thousand and FIVE hundred lumens !!!!!!!!!!
On Sat, 6 Oct 2018 16:30:40 -0700 (PDT), jbeattie
wrote: On Saturday, October 6, 2018 at 11:59:57 AM UTC-7, Joerg wrote: On 2018-10-06 09:14, jbeattie wrote: On Saturday, October 6, 2018 at 8:20:28 AM UTC-7, Joerg wrote: On 2018-10-05 09:21, jbeattie wrote: On Friday, October 5, 2018 at 7:31:57 AM UTC-7, Joerg wrote: On 2018-10-04 20:34, Frank Krygowski wrote: On 10/4/2018 3:34 PM, Joerg wrote: On 2018-10-04 12:18, jbeattie wrote: It takes very little light to be conspicuous at night, and it takes no additional light to be conspicuous during the day -- assuming broad daylight without cloud cover or other low-light condition. My experience is clearly different. Your experiences are almost always unique, not just different. Yet strangely, it jibes with that of our government folks. Why do you think they mandate DRL on motorcycles? And yet motorcycles are the one category of MVs in Oregon with increasing fatality rates. e.g. http://www.eastoregonian.com/eo/loca...king-this-year You of all people, having been an amulance driver, should know the reason. The reason is this behavior: https://www.youtube.com/watch?v=ZkWWVryT1UE That is the road where I was almost clipped by a motorcyclist. He didn't anticipate that there could be a mountain bike in a right turn, hugged the curve at high speed and ... "GAAAH!". I heard his engine screaming but didn't have anywhere to go because of a wall of rock to my right. He needed the full oncoming lane to get the situation somewhat under control. Imagine what would have happened if there'd been oncoming traffic. Did you have your super-bright light on? Of course. ... Did it prevent the motorcyclist from being an asshole? If not, you need a much brighter light. You need the Asshole Eliminator from Magicshine -- 60,600 lumen high rate flasher. Run it all the time. The light is for regular straight stretches of road, it won't help in tight curves. Though it might cause motorists to recognize me fractions of a second earlier. Then why are you telling us the motorcycle story if it is not to illustrate that bright DRLs are needed? If you just want to talk about assholes in cars or motorcycles, that is rather mundane and has nothing to do with lights. And your post about being seen by on-coming, passing cars on straight stretches, you seem to confuse being seen with playing chicken. I ride on country roads all the time where cars in on-coming traffic get into my lane to pass. They can see me. I'm looking right at them. They just don't care. Being that I'm not riding a 3 ton F350, I pull to the right. A magical light doesn't change that dynamic. I did a short ride today -- my legs are killing me, and I haven't been off my bike for weeks. It's overcast and rained this morning. I saw maybe thirty other cyclists on my little climbing route -- maybe two with DRLs. No deaths to report. No breathless hysterics, stranded people, incompetents with exploded tubeless tires. Totally normal, at least by Portland standards, which for you might be super scary since I'm riding on city streets at full speed! Eeek! -- Jay Beattie. Perhaps if you had your bent nail and rock hammer with you someone's chain would have failed and you could have fixed it and reported the event here. -- Cheers, John B. |
#90
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SIX thousand and FIVE hundred lumens !!!!!!!!!!
Oculus Lights wrote:
[shameless Barry Beams plug] In other Barry Burr news, the absolute priority having two customers on Amazon is ... to make sure I call 50% of them a "douche bag" ... https://www.amazon.com/sp?_encoding=UTF8&asin=B018797NI2&isAmazonFulfille d=0&isCBA=&marketplaceID=ATVPDKIKX0DER&orderID=&se ller=A3BDW30AECO8UD |
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