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#41
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Rear LED light effectiveness.
In article , Simon Bennett
) wrote: Dave Larrington wrote: I /did/ get passed by a semi-visible Richard Phipps about 160 km into the South Bucks Winter Warmer, but some new flatteries at the next control sorted that out... Do his clones ever ride on the same Audaxes? Might explain the subtle differences. I saw one on the Invicta Hilly on Sunday. I think I saw two on the Kennett Valley Run. -- Dave Larrington - http://www.legslarry.beerdrinkers.co.uk/ All your call centre are belong to us. |
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#42
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Rear LED light effectiveness.
MartinM wrote:
did you see his saddle bag? it looked a bit small, I assume that's a Super C A bit small for what? I didn't see it, but I know how big they are. |
#43
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Rear LED light effectiveness.
MartinM wrote:
did you see his saddle bag? it looked a bit small, I assume that's a Super C Did it look like this? http://www.wallbike.com/carradice/supercsaddlepack.html |
#44
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Rear LED light effectiveness.
Simon Bennett wrote: MartinM wrote: did you see his saddle bag? it looked a bit small, I assume that's a Super C Did it look like this? http://www.wallbike.com/carradice/supercsaddlepack.html not quite it had mesh side pockets but about the same size; I prefer my SQR tour but it is a lot bigger (although still very light) |
#45
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Rear LED light effectiveness.
MartinM wrote:
Simon Bennett wrote: MartinM wrote: did you see his saddle bag? it looked a bit small, I assume that's a Super C Did it look like this? http://www.wallbike.com/carradice/supercsaddlepack.html not quite it had mesh side pockets but about the same size; Yes, that's the one. Can't see the pockets in the pic. I prefer my SQR tour but it is a lot bigger (although still very light) You wait until it's packed full -- it'll throw you off your bike I tells ya! |
#46
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Rear LED light effectiveness.
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#47
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Rear LED light effectiveness.
In article 441809da.0@entanet, Zog The Undeniable wrote:
Pete Biggs wrote: Zog The Undeniable wrote: LEDs are also generally awful when run from NiMH cells. "Nickel Metal-Hydride batteries have a high capacity and a very flat discharge curve which maintains a cell voltage of 1.2V over ~80% of the discharge curve. This gives a nominal pack voltage of 4.8V which as you can see from the graph brings the mean efficiency up toward 70% and since the fully charged voltage of the pack is only 5.6V the maximum LED power is about 1.3W for a brief period and stays at 1W for most of the discharge cycle. If you do not want to modify the light I strongly recommend you use NiMH rechargeable batteries, you will get much longer run times." - http://www.ajjrice.plus.com/reviews/smart%20nova.htm Yes, but LEDs are more voltage dependent than current dependent. Well, sort of, in a way, ignoring lights with proper regulation (which should be current regulation for LEDs, not voltage regulation). But while the lower internal resistance of rechargables isn't as significant at the typically lower current requirements of LED lights compared with incandescents, LEDs are more efficient at lower currents, so a small amount of undervolting won't reduce brightness anything like as much as it would for an incandescent. Any LED light that is ok on part-used alkalines should be fine with NiMH. |
#49
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Rear LED light effectiveness.
In article , (Tony
Raven) wrote: Terry wrote: In article , (Tony Raven) wrote: Terry wrote: I was horrified by the bloke cycling without lights in London the other night while carrying his young daughter on the crossbar. It was a cold night as well and the poor kid had no gloves. Although I use lights in London to be honest they are not critical unless it is raining. Street lighting is very good and visibility of cyclists is not a problem in general. Ah, so you know the street I'm referring to, and are thus aware that it is a narrow rat-run with poor lighting, road-humps, cars parked on both sides, and cars entering and crossing having limited visibility due to parked cars? I'm so very glad that neither you nor the dick risking his kid's life is my dad. Which part of "in general" did you not understand? Given that you wrote it, which part of "they are not critical unless it is raining" did /you/ not understand. I didn't make a general point. I made a specific point about a specific incident in which a specific person did a very foolish thing in a specific location which caused it also to be very dangerous. Had it been two lads larking about I wouldn't have mentioned it, but a small child is entitled to expect better, both of its carers and of other adults who might, for whatever reason, choose to gloss over criminal stupidity with glib generalisations. |
#50
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Rear LED light effectiveness.
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