to see above how someone included the cam into the inside foam of his helmet. In case of a shock, the helmet will absorb the impact, that's exactly its purpose, saving your skull to have to absorb the energy: it will bend inside, much more than what you think. Now, by fixing the cam INSIDE it... the impact will move the shell inside and, logically, push the videocam inside, cause the cam does not bend (solid material), hitting badly your skull, face, eye, depending on the impact's direction. Exactly what nobody wants. If we want videocam, it is for safety reasons and if having one put your life at risk, I don't see the purpose. It is the worst idea I have ever seen, I am sorry to say and apologize for being so direct for a first post. As you may know, M. Schumacher probably was hit that bad because of the GoPro that was located on his ski helmet. Reason is that (again) the external shell of an helmet is made to bend, absorbing the impact by using the space between your skull and the external shell to absorb the energy of the impact. The fact to put an external videocam on top of it will create a solid centered point of impact, instead of spreading the energy around the impact. It acts as a sword, focusing the impact into a small spot, hitting the head behind or making the shell to explode instead of bending. We all have to know that helmets are extremely precise designs. they are made to bend, to adsorb impacts. All mods on them are prohibited by manufacturers. Even stickers or not approved painting are not advisable, cause the helmet has to (potentially) brake itself in case of impact to fully absorb accident energy, while a sticker or wrong painting will prevent the helmet to move the way the engineers made it for ! And the last point to mention on that is about insurance companies. It seems like riders, that's the main reason of a dashcam from what I read, want to bring some evidence to their insurer that they were not the one at fault in case of an accident. Fair enough. It means that they are 'insurer cautious'. And they are all right to be ! But, big but, if at the same time you modify the helmet protection potential by attaching a viedocam into/ on it, the same insurer will certainly have a nice video showing you were not responsible for the accident itself... but potentially responsible for the injuries to your head ! You can imagine it could potentially claim that manufacturer instructions were not followed properly etc. Check again the story about M. Schumacher, you will read the comments related to the GoPro stating that it was a stupid accident. But that the videocam made it worst: in the US, where insurer have a lot of power, it may make a big difference. I read all your above subject, thanks for all that info and came to the conclusion that, well, the best option would be to build my own waterproof casing. Since we are not (hopefully) going 3m under water on a motorbike (that would be very unlucky) but only face heavy rain or storm, we have to make a casing which is "somehow" waterproof. I searched Google for "waterproof build camera" to see what people DIY experiences and found out that actually, the best would be to buy a cheap piece of transparent plexiglas and cut / bend it to the shape we need to enclose the dashcam inside it. Some silicon, HD-fishtank glue would seal the front and 4xside panels... we are left with only the back side to close while the rain may be thrown from the back due to backwind at speed: nothing too complicated to protect/seal and make a backside which is waterproof enough for your needs, but we can remove and pass through some electrical wires (power supply). I will try to build something in the next weeks and let you know my first attemps... thank you all for all the comments and sharing your experiences, it helped me a lot to think through the issue. Cheers !
