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Dynamo/LED power conditioning
Frank Krygowski wrote:
On 5/4/2018 12:06 AM, bob prohaska wrote: I'm curious, what make of dynamo got hot at 10 mph? The glued-on label has faded out completely. Plain, drawn aluminum case, steel mouting bracket. It's more slender than the Anlun in the SJS link below and has a metal roller, with a single push-clip terminal. I can post a photo if it's of interest. I have ancient Union bottles on two bikes. I don't recall them ever getting beyond very slightly warm - I'd guess maybe 90 degrees Fahrenheit. This place has bottle dynamos: https://www.sjscycles.co.uk/dynamos-bottle/ I've bought other stuff from them. Price and shipping speed seem very competitive with American sources, and selection tends to be much better. Now that I have the hub dynamo there's little incentive to go back, but that is a link I didn't know about. This place has been a good source for bulbs of all kinds: http://www.reflectalite.com/ They also have LEDs that are drop-in replacements for halogen dyno bulbs. I bought one for a friend and have another in a headlamp that I've only bench tested in my basement. It seems very good, but I haven't tried it on the road. It's not yet needed on any of my bikes. That is a most interesting site, I can think of a couple reasons to explore it further. Still, it's uncertain how well optics designed for filaments will match to LEDs' larger source size. Also, it looks as if the drop-in dynamo bulb replacements are only 1 W, leaving 2 W or so excess get rid of. Odd they don't offer a 2.4 or 3 W version. Thank you! bob prohaska |
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