I recently bought a helmet and handbar moutable camera made by a firm called storage options. The instructions do not explain how to fit the strap for helmet attachment. It consists of a ring of elastic with a further piece of elastic attached at right angles to the ring to form a half circle above the ring. The camera mount is at the T where this extra piece attaches to the ring, and is oriented in the same direction as the extra piece.
Here is a photo of the strap. I think that the camera is supposed to be inserted in an upwards direction into the area above the buckle on the lower strap (although this doesn't seem like a secure mount).
Here is a photo of the camera in situ on a helmet. As you can see it's not entirely clear how the straps are arranged from this photo
Does anyone know how to fit this to my helmet (which has a sun visor and to the best of my knowledge is a Giro Venti)?