Suction mounts on a canopy

Has anyone ever seen a canopy cracked by a 'lever-action' suction
device? You've got me worried now ..........

I read somewhere that water will work better than spit, and my own
experience reinforces this. I can't explain why, but try water
instead of spit. Fred

I use one of Paul's suction cups to hold my iPAQ. I use a little water
from my Camelback to wet the cup before attaching. I try to make sure I
press down all around the cup and squeeze out as much air as possible. I'm
also attaching to the lower edge of a 1-26 canopy, so there is not a lot of
curvature at the point of attachment. I've installed it at 7000' and flown
to 18,000 and back without it coming off, including flights of 5+ hours. I
generally have to pull on the edge of the cup and peel it off to remove it.

John Scott


wrote in message
ups.com...
I read somewhere that water will work better than spit, and my own
experience reinforces this. I can't explain why, but try water
instead of spit. Fred

Hi Bernie,

I doubt it would crack a canopy. My fear (founded or unfounded) is that the
localized deformation of the canopy would lead to internal crazing -
especially in extremely hot or cold conditions.

I just wouldn't want to risk a $2000 to $5000 glider canopy.

Paul Remde

"Bernie" wrote in message
ups.com...
Has anyone ever seen a canopy cracked by a 'lever-action' suction
device? You've got me worried now ..........