I wanted to be able to make films of my flights, filming whatever I looked at, as I looked at it....And of course, the conventional way is with helmet mount. But I wanted a way of doing it which did not mean modifying the helmet or using potentially damaging adhesives.
This solution uses suction and is easily made in only a few minutes using surplus meccano bits and a cheap suction cup, which I got on ebay. There are various types available, but I bought 47mm one with a screw-in threaded shaft and a brass nut. A 32mm one might also be suitable.
I tried mounting the camera in various places but ultimately decided that the side of my visor was best; you will need to settle on the best position on your own helmet.
Step 1: You Will Need . . .
2 meccano strips (5 holes on flat/ one hole on each end)
several washers (I used only one here, but ought to have used three)
2 small nuts and bolts
a rubber meccano spacer
meccano allen key and spanner
Step 2: Bolt the Two Meccano Strips Together at the Ends
For tidiness's sake, put the nuts on the inside.
Step 3: After Screwing the Shaft Into the Suction Cup, Put a Washer On
Step 4: Add a Meccano Rubber Spacer
Step 5: Put the Threaded Shaft Through the Middle of the 5 Holes
Step 6: Add a Washer and Secure It With the Brass Nut
Step 7: Add Velcro
Step 8: Position the Mount on Your Helmet
The camera can then be mounted with the helmet on or off, though, as I don't have a viewfinder on my camera, this is fairly hit or miss. Only through experimentation can you determine the actual field of view etc. It may then be worth putting framing marks on the visor.
A meccano hole can be used to fix a lanyard to secure the mount to the pilot, in case it comes unstuck. I plan to fix the camera lanyard to my flying suit.