Originally Posted by
3speed
The MiNewt I was thinking of getting is on the local CL for $40, basically new. Right now I'm using a really cheap, crappy flashlight/mount thing from a big box store. Most anything will be an upgrade, so I'll look into the B&M lights. One thing that concerns me is that they're not quick release. Does anyone have an idea on these as far as theft is concerned? And I have a general idea of how bright a light is of a given lumen rating, but am completely unfamiliar with the lux rating system, and can't seem to find a decent comparison of them. Lots of technical explanation of them, but no practical comparisons. Does anyone have any sort of idea about how many lumens the Fly or Lyt would be equivalent to?
No, the MiNewt 350 USB that I mentioned and linked to is normally ~$65. It comes with the battery.
The dynamo lights get attached to your bike with a screw. So they're more secure than a regular light, though less secure than taking your light with you. But they're no more or less secure than the other components on your bike - the deraillers, shifters, handlebars...etc.
If you have a cheap POS bike that you leave locked up outside to a pole overnight, this might be a problem. Anything other than that - it's no more or less secure than anything else that's bolted onto your bike. If you really really wanted to keep it permanently attached you could put glue in the screw part of something, though obviously that would make it difficult to get off later...