25 x 25 x 1.2 Aluminium tube
Electronic bits, Cree XRE - Q2 bin, Ledil 6° optics, Luxeon 700 mA buck puck, DPDT centre off switch and dc plug & socket
Bond the body parts with araldite
Rear view
Front view
Led carrier and heatsink on top
Leds and lens
Bonding the Leds with thermal epoxy
drill holes for wires
Regulator and switching arrangement. DPDT centre off, gives both leds at full power (centre), one led at full power (down - shorts other led out) and both leds at 20% (up - via 1k resistor)
Front view of led carrier soldered up
Electronics assembled
Optics glued in place
Helment mount using pvc gutter fitting
Front view assembled
Rear view assembled
Bolt is a snug fit behind led carrier to hold it all together