Oxygen system in ASW-27 ASG-29

On Tuesday, August 11, 2015 at 2:58:34 PM UTC-6, wrote:
Recently acquired an ASG-29 (ASW-27-18)and unable to mount O2 regulator on bottle behind seat back. Not enough room with seat back in aft position. How have other 27/29 owners solved this problem? Flex high pressure line? If so, where was it purchased?

Thanks

I got my D bottles from Eastern. I use MH and you can use a remote gauge and regulator (Via Braided SS) or make sure the gauge and regulator are vertical and if it is turned just right it will fit where the lip is molded in the seat back. I have also seen people grind out a small section of the seat back to make it fit.

You might also look at the Spiracle DD-lite bottle. It's a full carbon fiber wrap 3000 psi rated bottle that is 4 lbs, about 12.5 inches (no valve) long and 5.38 inches diameter, and threaded for standard CGA-540 valve. I used to sell them, but with the last recession stopped doing so. They are available on-line for less than $500 and are popular for rescue work. They typically come with a post style valve, but some suppliers will lower the price a little and sell just the bottle. You will then need to buy a mini CGA-540 valve etc. from Mountain High or another supplier.

Advantage of this bottle is it is very light, shorter than most, so if your available space will handle the somewhat larger diameter, this bottle often nets the most capacity if the space is length limited. The DD-lite holds 557 liters at 2216 psi - - the bottle is rated for 3000 psi and holds 748 liters at that pressure (but you'll need to fill with a O2 boost pump in the USA as the typical glider FBO only has bottle manifold so fills are mostly lower than 2200 psi, though it's good to know the bottle is super strong - just don't drop it.

bumper

I got a high pressure line from Paule Remde / Cumulus Soaring and mounted the regulator on the left side of the cockpit aft of the trim slide. The HP line is held in place with "P" shaped small hose clamps that are placed at the seat pan screw holes. The regulator (a small AvOx) is held down with heavy cable ties connected to the same hose clamps.

In New England we only use O2 in the fall season - and this system is easily installed and removed.

Roy

On Wednesday, September 2, 2015 at 9:08:38 AM UTC-6, wrote:
I got a high pressure line from Paule Remde / Cumulus Soaring
Roy

I have always found Paul to be a very low pressure type salesman... Sorry, couldn't resist.

Bruno - B4

Mine fits with a MH regulator in all seatback positions. For reference, the restraining strap in within an inch of the top curve of the bottle. (It rests on the flat part of the cylinder but is very close to the transition point.)

I bought a steel bottle from Schleicher and a brass adapter from Mountain
High to use their normal USA style regulator. That way you can refill the
bottle easily too. It fits with the seatback at full back (just!)
We have that setup in an ASW28 and an ASG29.
- Tom