Further development of the Aldi helmet. In an earlier post, I said that my first problem was excessive ventilation. So, I covered the vents inside the shell with duct tape, and it is a vast improvement, and when spring comes, and I need more ventilation, it is a five minute job to remove the tape . Not fitted the proposed peak yet, because looking at the weather forecast, sun is not going to be the problem over the next couple of days, but we are in for some heavy rain.
The rain gives two main problems, cold face, and rain drops on my spectacles. From my motorcycle days, I know that both problems can be solved with a transparent visor. It is easy to wipe rain off a visor with a gloved hand, but almost impossible to wipe your glasses. I am experimenting with a detachable rain visor for the aldi helmet. The Mark 1 model is made from a large coke bottle. {Cwah would be proud of me}. I cut the top and bottom off the bottle, and then cut it down the side to make a flat sheet of plastic. The next problem is that it will not stay flat. However the problem can be reduced by folding the top and bottom edges over for about half an inch and sharply creasing. Surprisingly, these edges will stay folded, forming the top and bottom edges of the visor. I pierced two holes in the upper two corners, and attached an elastic strap which fits around the back of the helmet. Owing to the shape of the helmet, the visor has a tendency to slip upwards. To help prevent this , keep the strap low down at the back of the helmet by fixing it to the helmets`s strap clip with a rubber band. The strap is made from interlinked rubber bands cut from an old inner tube.
The shape of the helmet in the forehead region causes yet another problem . It causes the visor, in stead of being vertical, to have a backward slope, so that it is further away from the face at the bottom than it is at the top. On reflection, this may actually be an advantage. As the visor is further away from the lower face, it will help prevent fogging of the visor.
Real world testing will take place tomorrow in the promised rain and 20MPH winds. If fogging is a problem, I will shorten the visor a bit, as at present it comes down almost to the chin. If the idea shows promise, I will be looking for some slightly thicker plastic, one possibility is the transparent Bio Hazzard masks worn in mortuaries. Watch this space for further updates.