How about hooking up an aquarium pump, suck the air out of the small
chimneys through some tubing.



"X@%$^&!!!!" wrote in message
...

groups.com:

have the same problem unless i use rain-x defog on the lenses. also,
have safety lens of plastic that do not fog as readily as glass lens.
in desperation, u might try the ole saliva trick except it leaves
streaks on the glass. another approach my son uses(he welds on ships
alot in the bildge)was to connect a ventilation hose to the welding
helmet which was primarily to eradicate the welding fumes but found it
also prevented the glasses from fogging. and remember, the only reason
they fog is, the lens are cooler than the moist warm air u r breathing
into the helmet. try making a cloth mask to cover your nose and mouth,
so the warm moist breath doesn't contact the cool lens. i have to do
this in the winter when riding the mc with a full face helmet, or it
foggs almost instantly and that is a pucker factor off scale at 70 mph.


The Rain-x is probably the best idea. I don't use a mask, just some
goggles
with flip up tinted lenses and clear ones underneath that. They fog as
well
as my glasses. It's not my breath, but the sweat of my brow that's doing
it. The goggles have small chimneys on them, but they aren't nearly enough
to kep a breeze going through. I'll try the rain-x this evening and let
you
know how i got on! Thanks!

X@%$^&!!!!