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11-08-07, 09:32 PM

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rmac

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Quote:

Originally Posted by Sir Bikesalot

I have a 25W halogen with 720 lumens (Jet Lites Axis system) and on unfamiliar roads/tracks, I feel it's just enough for 18-20mph. For 25mph, I would like another 25W on the helmet or handlebars.

I thought halogens get about 10-15 lumens per watt. This is almost 30 lumens per watt. Is the light output of halogens that variable?

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