It takes 4 x 18650 batteries so would be quite wide. Those lock block things would be no use.
Any ideas?

Lockblocks stretch quite well. I’ve held a magicshine on with one and that must be a similar size.

Edit: pretty sure I used a different, longer cinch strap though.

http://www.ebay.co.uk/itm/290955263714?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

warpcow, did you mount it under the bars to stop it rotating, did the beam bounce all over the place?

Strapping it to your helmet might be an option depending on weight.

Above the bars for me, but you’ve probably got a point. Mine had a seperate battery pack so that weight was on the frame instead.

The velcro-block is the low-cost option, but mine are designed for approx 1.25″ diameter, your lamp I’m guessing is somewhat chunkier

Is there enough metal to drill and tap a hole for a bracket a la Hope Vision 1 / Exposure Toro 5????

And don’t forget a lanyard around your bars, just in case 😉