In article <[email hidden]>,
[email hidden] says...
Quoted message said:I thought *any* paint or stickers were a no-no with
*any* helmet. Met Police at Cyclex didn't seem to know
this though.
Sigh! :-(
Not getting at you Helen , but this one crops up every
so often in work an I get fed up of repeating it. A bit
of history
In the 70's a new breed of motorcycle helmet appeared , ones
that were moulded from thermoplastic and were susceptible to
stress cracks if they came into medium term contact with
aromatic hydrocarbons such as petrol or thinners, or the
petroleum based gums that were then quite common as adhesive
for stickers, decals and labels. The warning was then issued
not to paint or use stickers on them. Time has moved on
stickers now use an acrylic adhesive that has no aromatics ,
but you ( not Helen but the argumentative type "you"😉 might
say " what about the old stock of sticker that you might
come across" . The main reason for the switch from aromatic
gums was that they had a shelf life , used or not, of about
18 months so it's unlikely that there will be any left in a
useable state.
The upshot is that the advice " never paint or use a sticker
on a helmet" is out of date and refereed to a particular
type of helmet and certain type of sticker.
There! Wasn't that boring?
