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09-01-15 | 08:45 AM

#13

cyccommute

Mad bike riding scientist

Joined: Nov 2004

Posts: 29,155

Likes: 6,211

From: Denver, CO

Bikes: Some silver ones, a red one, a black and orange one, and a few titanium ones

Quote:

Originally Posted by dwmckee

I am very happy with the Searfas Thunderbolt as a helmet light. It has a very wide beam pattern to accomodate your head moving around, and it is very light. The light output in lumens is not real high, but if you see it in action you would think it is much brighter than the rating states. It has about 130 micro LEDs arranged to appear as a much larger source. It also throws light down your back so your body is lit up as well which helps a motorist get a depth fix on you and see you are a biker, not just a bright spot.

I'm not sure which Serfas Thunderbolt you are talking about. This Serfas Thunderbolt has 15 micro LEDs but I wouldn't call it a "helmet" light. At least not for the kind of application that Chris516 and many others want a helmet light to do. This might be a good "be seen" light but I doubt that it would work very well as a light to illuminate the road to avoid road obstacles. For that most people want a brighter light with a more coherent beam.

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