On May 26, 11:11*pm, mattm wrote:
On May 26, 8:47*pm, Brad wrote:





On May 26, 2:16*pm, mattm wrote:

On May 26, 11:29*am, Andy wrote:

On May 25, 9:05*am, 4Z wrote:

*Spring cleaning! *I have a newly rebuilt 80 mm Sage SV vario.. *I'd
like to trade it for a 57 mm Sage or sell for $600 OBO. *Also have a
1979 Security 250 chute. *Always well cared for, just passed
inspection and has a fresh repack, $500 OBO.

I've always been curious why anyone would use a vario with no audio
capability when there a less expensive electronic varios available.
You must like the Sage so can you explain how it is useful?

Andy

I think the main two reasons for the Sage are quick response and the
fact that it will work if your power fails. *Until fairly recently
audio varios
failed if your battery quit. *The B400 and the optional unit for the
Tasman
do solve that problem, but if you've already got a Sage you already
have
a high quality backup for your main vario. *Some people really love
them.

My new plane has a Sage at the top of the panel. *It's taken some
work to get it useful -- I had to move the capacity bottle, replumb to
isolate it from the LX, and make a gust filter for it before it would
work in a reasonable fashion -- but it's fine for its purpose now.
The previous owner told me he mainly relied on it for thermalling.
(He also never flew in contests, needless to say.)

If money were no object I might redo the whole panel with a Tasman and
a different s2f vario, but that would be a lot more work than it's
worth.

-- Matt

gonna hi-jack the thread.......what kind of glider did you get Matt??

Brad

I got an ASW-19 that's been parked unused for several years. *My
friend
Roger Fowler (plug, plug) started up a sailplane repair business after
retiring, and this plane was his test to see if he really wanted to do
this for a living. *He did a really nice job restoring it.

As to the gust filter, the guy parked nearby on the trailer line made
one. *It was simplicity itself: a small disc of sheet metal (I used a
pie
plate) about the size of a barbed tubing connector. *Drill a small
hole in it and epoxy it to one end of the connector. *Plumb the
connector into your TE line close to the Sage. *The Sage behaves
much smoother now, although I think I may have slowed mine down
a little too much. *I'll have to open the hole a bit when I get a
chance...

-- Matt- Hide quoted text -

- Show quoted text -

Gene Moore (of Moore variometer fame) taught me decads ago to make a
simple gust filter. Cut a 3 or 4" piece of insulated #18 or #20
electrical wire and carefull pull the wire out.You have a 3 or 4" tiny
tube with a hole through it. About a half inch from one end wrap a
tappered two inch piece of soft masking tape. The OD of the tape near
it max end should be about the ID of your instrument exit fitting.
Poke it in tight. With this several inches of restriction in the line
you can snip off the length until the filtering is about right. We
used to do this final adjustment (insulation smipping) in the air with
a few zoomies (in hopefully still air) between snips. So the masking
tape sometimes dried out and leaked in a year or two so we spent
another 15 minutes making another. Good luck.
Ed Byars