While I was waiting for the Solarstorm light to come from ebay (which is really really good if you were wondering, except for maybe getting quite hot), I put together this little light from bits I had,
I wanted to try to integrate the heatsink into the actual case a bit more than you usually see - I came up with this.
Ignore the fact it still has blue on it :-)
It is using the little single mode 1.25A driver from DX, I've not measured the actual output and the optic is an LEDIL LXP - but it gives a nice output.
Mtbr's 2016 Winter Biking GearReviews and Roundups
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Thread: A light from the spares bin XM-L