This is how I mounted the cheapie MD80 on my helmet.
Go to
Halfords (?!) and buy a Bikehut cycle helmet headlight mounting (£5).
http://www.halfords.com/webapp/wcs/..._productId_708511_langId_-1_categoryId_165636
Next, take the hinged mount from the MD80 pack, unscrew the hinge arm, fixing the camera clip to it as normal (I managed to damage the clip by over-tightening so ended up glueing it to the hinge arm with Araldite as the bolt would no longer hold it in place).
Now, place the back of the hinge arm against the face of the light mounting and you can thread a thin cable tie through the hinge hole itself, around the lip of the mounting face and under the red headlight release catch. I also added a second cable tie for security as I had to glue the plate on - this was around the bottom of the hinge plate (between it an the camera clip) and the red catch. This will hold the whole caboodle in place (I also put a strap of double-sided velcro between the hinge plate and the mounting face so I could also wrap this around the camera as a secondary support.
You can then use the headlight mounting's universal joint to position the camera.
Don't forget to use the lanyard strap that comes with the camera and thread it through the vents on the helmet as a back up to stop the camera falling if the whole thing fails.
View attachment 6066
View attachment 6067