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Old June 15th 09, 08:21 PM posted to rec.aviation.soaring
Andy[_1_]
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Default Water ballast bag replacement surprise...

On Jun 15, 9:28*am, Chip Bearden wrote:
I use the 1/2" PVC-pipe-inserted-into-the-bag method to push the bag
into the wing (end of pipe padded with duct tape; two lengths of pipe
joined with a wood dowel for easy storage in trailer).


I had an ASW 19 for 15 years. Like Chip I pushed the bags into the
wings with PVC pipe. My bags held far more water than allowed by max
gross weight. The tip ends of the bags were folded back over the main
body of the bag to reduce length and capacity and the overlapping
parts were tied together in about 4 places. The PVC pipe end was
capped with a T fitting that pushed against the fold line. The pipe
was removed after bag insertion and was kept in the trailer in case it
was needed at an away contest.

I had a string on each bags that secured them to the outer end of the
airbrake boxes via a bungee and a hook that fitted over the airbrake
pivot bar. The sting was pulled gently as the bag was pushed into the
wing. The string helped to prevent the bags getting bunched and
twisted when the wing was in the trailer.

Using this method I could extract, inspect, and replace each bag in
about 30 minutes single handed.

My picollo pipes were only about a third of the bag length. If I ever
have bags again the picollo pipes will be full bag length and then no
external pipe will be required for insertion.

Caution - if the bags have a string that exits through a hole in the
wing be careful when extracting the bag. Pull too fast and the string
will cut into whatever part it rubs on. I used a length of PCV tube
as a string guide.

Andy