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#21
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New CCFL, 26650, 18650, or 3AA
On 7/5/2020 10:14 AM, Ralph Barone wrote:
sms wrote: snip From the Urban Dictionary https://www.urbandictionary.com/define.php?term=stvzo: snip [disclaimer: that entry into the Urban Dictionary was written by me in 2013] Gee, Steven. You wrote that? No ****? I never would have guessed. LOL, well at the time I must have been particularly annoyed at someone who was going on and on about how a sharp StVZO cutoff was somehow always desirable and optimal. The reality is that for a bicycle light you want some top spill to be able to read street signs, avoid low hanging tree limbs, etc., and you want some bottom spill to be able to see the road surface which is often of poor quality. Riding on unlit multi-use paths, which are very common, generally requires something other than an StVZO beam. Motor vehicles have the high beams to use when the driver needs to be able to see things above the road surface. There are very few bicycle lights that are switchable between high beam and low beam. Lezyne now makes one StVZO model for Europe https://ride.lezyne.com/products/power-hb-drive-stvzo-500. There may be more that are marketed solely in countries where StVZO must be adhered to. Another annoyance of StVZO is the prohibition on any kind of flashing DRL. I can understand a ban on high power strobes, but now some manufacturers are programming the DRL mode to not use full power and to also to "breathing mode" a modulating dimming/brightening cycle that still gains the attention of motor vehicles but which is not annoying like a strobe. I have a light where "breathing mode" is between 50 and 100 lumens even though at full power the light is 1800 lumens http://ae01.alicdn.com/kf/HTB1x2LpCeuSBuNjSsziq6zq8pXa2.jpg. I wonder if breathing mode would be StVZO legal since the light is never turned off completely, it is modulated between two levels of brightness. The use of modulated motorcycle headlights for a DRL is common and legal in the U.S. and you can buy a module that plugs into the headlight to do this. In my area, a lot of multi-use paths are along waterways. The county encourages the development of trails along waterways but they usually will not allow lighting to be installed because they don't want to disturb the riparian environment, https://www.valleywater.org/sites/default/files/WRPM%20Ch%203%20Trail%20Design.pdf. To use these paths at night really requires a good light. I've tried it with just a dynamo powered light and it's pretty scary because there are many areas where you have to go quite slow and at 3-5MPH you're not getting sufficient power from the dynamo to illuminate the path. Even one frequent r.b.t. poster purchased an Oculus light when he or she realized that his or her dynamo lights were not quite adequate. |
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#22
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New CCFL, 26650, 18650, or 3AA
On Monday, 6 July 2020 14:37:47 UTC-4, sms wrote:
Big Snip Even one frequent r.b.t. poster purchased an Oculus light when he or she realized that his or her dynamo lights were not quite adequate. If you're talking about Frank, his Oculus light lives in a drawer as he doesn't use it. For off-road trails perhaps a non-STVZO compliant light might be needed, but on a MUP a STVZO compliant light should be better. Then when you meet an oncoming bicyclist you don't blind them. Cheers |
#23
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New CCFL, 26650, 18650, or 3AA
On Monday, 6 July 2020 15:08:34 UTC-4, Sir Ridesalot wrote:
On Monday, 6 July 2020 14:37:47 UTC-4, sms wrote: Big Snip Even one frequent r.b.t. poster purchased an Oculus light when he or she realized that his or her dynamo lights were not quite adequate. If you're talking about Frank, his Oculus light lives in a drawer as he doesn't use it. For off-road trails perhaps a non-STVZO compliant light might be needed, but on a MUP a STVZO compliant light should be better. Then when you meet an oncoming bicyclist you don't blind them. Cheers Edit. Also the link: http://ae01.alicdn.com/kf/HTB1x2LpCe...iq6zq8pXa2.jpg Does NOT show what's needed to make an informed decision and that's the actual beam pattern that falls on the road. It looks like another glorified high-powered flashlight type beam pattern. |
#24
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New CCFL, 26650, 18650, or 3AA
On Monday, July 6, 2020 at 12:08:34 PM UTC-7, Sir Ridesalot wrote:
On Monday, 6 July 2020 14:37:47 UTC-4, sms wrote: Big Snip Even one frequent r.b.t. poster purchased an Oculus light when he or she realized that his or her dynamo lights were not quite adequate. If you're talking about Frank, his Oculus light lives in a drawer as he doesn't use it. For off-road trails perhaps a non-STVZO compliant light might be needed, but on a MUP a STVZO compliant light should be better. Then when you meet an oncoming bicyclist you don't blind them. Cheers STVZO doesn't have to be cheesy, or necessarily have a sharp _horizontal_ cutoff. How about a bright arc that's brighest in the top center but stays nearly as bright all the way down and around to the ground? Yes,Oculus optics can do that! Check out my STVZO compliant beam to check out what will dethrone Supernova and change the STVO bike lighting world if.... only I could find a licensee. https://www.youtube.com/watch?v=SXuE...ature=emb_logo |
#25
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New CCFL, 26650, 18650, or 3AA
Oculus Lights wrote:
On Monday, July 6, 2020 at 12:08:34 PM UTC-7, Sir Ridesalot wrote: On Monday, 6 July 2020 14:37:47 UTC-4, sms wrote: Big Snip Even one frequent r.b.t. poster purchased an Oculus light when he or she realized that his or her dynamo lights were not quite adequate. If you're talking about Frank, his Oculus light lives in a drawer as he doesn't use it. Maybe it's so bad that Frank's hard-earned "responsible cyclist" status with the local traffic cops would be in danger if were to donate it to a penniless dog walker. For off-road trails perhaps a non-STVZO compliant light might be needed, but on a MUP a STVZO compliant light should be better. Then when you meet an oncoming bicyclist you don't blind them. 85% of Stvzo low beams are pointed either too low or too high, a study at Seattle CHAZ Memorial Hospital indicates. STVZO doesn't have to be cheesy, or necessarily have a sharp _horizontal_ cutoff. How about a bright arc that's brighest in the top center but stays nearly as bright all the way down and around to the ground? Yes,Oculus optics can do that! Check out my STVZO compliant beam to check out what will dethrone Supernova and change the STVO bike lighting world if.... only I could find a licensee. https://www.youtube.com/watch?v=SXuE...ature=emb_logo Good grief, even after all these years, you still do not comprehend that a near-constant brightness below HV and even reaching "down, down, down, way below" the "brightest" spot thoroughly ruins the beam! BTW, nobody is selling 33 lux battery lights at double-digit prices these days ... except some Chicoms claiming 100 lux. |
#26
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New CCFL, 26650, 18650, or 3AA
On 7/6/2020 2:37 PM, sms wrote:
On 7/5/2020 10:14 AM, Ralph Barone wrote: sms wrote: snip Â*From the Urban Dictionary https://www.urbandictionary.com/define.php?term=stvzo: snip [disclaimer: that entry into the Urban Dictionary was written by me in 2013] Gee, Steven. You wrote that?Â* No ****? I never would have guessed. Â*LOL, well at the time I must have been particularly annoyed at someone who was going on and on about how a sharp StVZO cutoff was somehow always desirable and optimal. I get particularly annoyed at posters who resurrect arguments they lost long ago, but restate their opponents positions to make them sound unreasonable. What shall we call that dishonest technique? Maybe a "decrepit straw man" argument? The reality is that for a bicycle light you want some top spill to be able to read street signs, avoid low hanging tree limbs, etc., and you want some bottom spill to be able to see the road surface which is often of poor quality. Riding on unlit multi-use paths, which are very common, generally requires something other than an StVZO beam. Absolute bull****. One naturalist friend of mine calls me every month near the full moon to ride a completely unlit MUP about ten miles from here. My dynamo powered StVZO headlight is so much better than his battery light that he often switches his light off to save its batteries. And the only time that there was a tree down halfway across the trail (maybe 9 months ago) we saw it in plenty of time using my light. I don't think his would have shown it. In my area, a lot of multi-use paths are along waterways. The county encourages the development of trails along waterways but they usually will not allow lighting to be installed because they don't want to disturb the riparian environment, https://www.valleywater.org/sites/default/files/WRPM%20Ch%203%20Trail%20Design.pdf. To use these paths at night really requires a good light. I've tried it with just a dynamo powered light and it's pretty scary because there are many areas where you have to go quite slow and at 3-5MPH you're not getting sufficient power from the dynamo to illuminate the path. You must be using a really crappy, ancient headlight. For any modern LED dynamo headlight, the brightness vs. speed curve is quite flat. The decrease at low speed, all the way down to walking speed, is such that one can _always_ see the path. Even one frequent r.b.t. poster purchased an Oculus light when he or she realized that his or her dynamo lights were not quite adequate. I bought the light to review it. It's got less than about three hours use on it. If a person is racing down 30+ mph hills in total darkness, they may need its brightness. No normal cyclist needs the brightness it puts out. As Sir said, it's in a drawer, and it's for sale. If I needed the money, I'd have sold it by now. I'd be more than happy to trade it to Jay for his dyno wheel and headlamp. -- - Frank Krygowski |
#27
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New CCFL, 26650, 18650, or 3AA
On 7/6/2020 1:42 PM, Sepp Ruf wrote:
On Monday, July 6, 2020 at 12:08:34 PM UTC-7, Sir Ridesalot wrote: snip If you're talking about Frank, his Oculus light lives in a drawer as he doesn't use it. Maybe it's so bad that Frank's hard-earned "responsible cyclist" status with the local traffic cops would be in danger if were to donate it to a penniless dog walker. Highly unlikely that anyone would spend that much money for a superior light then keep it in a drawer, unused. 85% of Stvzo low beams are pointed either too low or too high, a study at Seattle CHAZ Memorial Hospital indicates. My nephew lives in Seattle on a street that is the border of CHAZ, he is on the non-CHAZ side of the street. They evacuated, twice, because of tear gas coming into their building affecting their newborn. I guess he evacuated prior to that hospital opening its doors. Thrilled to know about that CHAZ hospital study and impressed that so soon after being formed the hospital was able to complete such an important piece of work, especially since StVZO lights are extremely rare in the United States. Even our dear leader recently railed against StVZO lights in a speech: “Against every law of society and nature, our children are taught in school to hate our own country's superior bicycle lights, especially in Ohio, and to worship StVZO compliant lights.†Hopefully the next study that hospital performs will be a study of the effects of helmet laws on bicycle usage during Covid-19. Or perhaps a study of paraffin wax versus molybdenum disulfide for chain lubrication. |
#28
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New CCFL, 26650, 18650, or 3AA
On 7/6/2020 11:37 AM, sms wrote:
snip Another annoyance of StVZO is the prohibition on any kind of flashing DRL. I can understand a ban on high power strobes, but now some manufacturers are programming the DRL mode to not use full power and to also to "breathing mode" a modulating dimming/brightening cycle that still gains the attention of motor vehicles but which is not annoying like a strobe. I forgot to mention, one way to do "breathing mode" on an StVZO dynamo light is to fabricate a device that interrupts the current from the dynamo to the light so that the light goes between full brightness and standlight brightness (for lights where the standlight brightness is lower). You can do this as simply as using a wheel magnet (or two) and a magnetic reed switch, with a way to bypass the reed switch for night riding. |
#29
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New CCFL, 26650, 18650, or 3AA
Am 07.07.2020 um 02:55 schrieb Frank Krygowski:
On 7/6/2020 2:37 PM, sms wrote: In my area, a lot of multi-use paths are along waterways. The county encourages the development of trails along waterways but they usually will not allow lighting to be installed because they don't want to disturb the riparian environment, https://www.valleywater.org/sites/default/files/WRPM%20Ch%203%20Trail%20Design.pdf. To use these paths at night really requires a good light. I've tried it with just a dynamo powered light and it's pretty scary because there are many areas where you have to go quite slow and at 3-5MPH you're not getting sufficient power from the dynamo to illuminate the path. You must be using a really crappy, ancient headlight. For any modern LED dynamo headlight, the brightness vs. speed curve is quite flat. The decrease at low speed, all the way down to walking speed, is such that one can _always_ see the path. Furthermore, the $15 StVZO light I linked was a *battery powered* StVZO light which obviously gives the same power output independent of speed. It has three power settings, "15 Lux/ 30 Lux / 60 Lux" (no idea how to convert that to ANSI Lumens, or "fake raw Lumens" or whatever). |
#30
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New CCFL, 26650, 18650, or 3AA
sms wrote:
On 7/6/2020 11:37 AM, sms wrote: snip Another annoyance of StVZO is the prohibition on any kind of flashing DRL. I can understand a ban on high power strobes, but now some manufacturers are programming the DRL mode to not use full power and to also to "breathing mode" a modulating dimming/brightening cycle that still gains the attention of motor vehicles but which is not annoying like a strobe. I forgot to mention, one way to do "breathing mode" on an StVZO dynamo light is to fabricate a device that interrupts the current from the dynamo to the light so that the light goes between full brightness and standlight brightness (for lights where the standlight brightness is lower). You can do this as simply as using a wheel magnet (or two) and a magnetic reed switch, with a way to bypass the reed switch for night riding. A gigantic field study conducted in Europe during the last century, involving bottle dynamos, untrue tires, and broken spokes, showed no observable safety effect. In fact, what is, today, called "breathing mode" by confused dictators of paper masks, used to be regarded as a telltale sign of mechanical ineptitude, obesity, and/or low status. Back then, anyone beyond grade school would be cruelly laughed off for confusing lazy wheel maintenance, imagined conspicuity, and traffic safety. Thanks to toy marketers, progressives, and the pandemic brain injuries caused by graphical user interfaces, those evil days are gone! -- "Progress" https://michael-klonovsky.de/images/Fortschritt.png |
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