I used to use an old scuba tank that would not pass hydro test due to a
chipped epoxy liner. Tank is good for about 200 bar so should "hold" one
bar of vacuum with no problem. I built a barb that screwed into the place
on the neck of the valve where the burst disk used to be. Then I could use
the scuba valve to quickly reduce the vacuum when I want to realign some-
thing in the bag. I do not bother with the reservoir anymore
If you are willing to go to the trouble of working toward a leak free
vacuum system you will find that a reservoir is not required and simply
makes it take longer to get the system up and going when you need to do
a wing.
If you are bagging a bunch of things at the same time then a reservoir and
a distribution block with individual cut off and bleeder valves would be
the way to go. Unless you are going into big time production it is better
to fix the leaks in the system than use a reservoir.
Dick Barker
Seattle, WA
- The Old Fart Glider Flyer -
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