Here are a couple shots of the helmet mount so far. Again I'm not sure how the rigidity will be with these dim's until I see it for real. Now I just need to do the bar mount and then send away to get them. So far these are around $10 bucks a piece. Not too bad for 3D prototyping it seems to me.
I am hoping to be able to apply a silicone or urethane layer on the underside of the flattish area so that it won't slip in use. We'll see how well that works.