Hi Clinton,

Good point! I sell a suction cup from RAM called a RAP-224-1 that pulls a
hard vacuum when you rotate the locking ring. I don't recommend it for use
on glider canopies because it pulls the canopy out of shape - which could
cause crazing or other damage in the long run. I would never use one on a
glider canopy, but it works well on glass windows in cars.

Paul Remde
Cumulus Soaring, Inc.
http://www.cumulus-soaring.com

"Clint" wrote in message
oups.com...
I was using very effective suckers with a locking action - until the
dangers of cracking canopies was pointed out.

Clinton
LAK 12